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4th Congress of the Balkan Geophysical Society
- Conference date: 09 Oct 2005 - 12 Oct 2005
- Location: Bucharest, Romania
- Published: 09 October 2005
1 - 100 of 198 results
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Earthquake Seismology, Exploration Seismology and Engineering Seismology: How Sweet It is --- Listening to the Earth
By O. YilmazKN - 01 KEYNOTE ADDRESS Earthquake Seismology Exploration Seismology and Engineering Seismology: How Sweet It is --- Listening to the Earth Oz Yilmaz GeoTomo LLC SUA Summary The seismic method has three applications with different requirements for band-width and depth-width: (1) Earthquake seismology with a bandwidth up to 10 Hz and a depth of interest down to 100 km (2) Exploration seismology with a bandwidth up to 100 Hz and a depth of interest down to 10 km and (3) Engineering seismology with a bandwidth up to 1000 Hz and a depth of interest down to 1 km. Each of
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Prestack Scalar Reverse-Time Depth Migration of Three-Dimensional Elastic Seismic Data
Authors R. Sun, G. A. McMechan and C-S. LeeO1 - 01 SEISMIC ACQUISITION & PROCESSING Prestack Scalar Reverse-Time Depth Migration of Three- Dimensional Elastic Seismic Data Robert Sun 1 2 George A. McMechan 2 Chen-Shao Lee 1 1 Department of Earth Sciences National Chengkung University 1 Tahsueh Rd. Tainan Taiwan 701 2 Center for Lithospheric Studies University of Texas at Dallas Richardson Texas 75083 USA Summary We migrate the reflected P- and S-waves in a prestack threedimensional (3-D) three-component (3-C) elastic seismic data volume generated with a P-wave source in a three-dimensional model using two independent 3-D scalar reverse-time depth migrations. P- and P-S-converted waves are extracted by
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Time-Shift Wave-Equation Imaging
More LessO1 - 02 SEISMIC ACQUISITION & PROCESSING TIME-SHIFT WAVE-EQUATION IMAGING Paul Sava Sergey Fomel Bureau of Economic Geology The University of Texas at Austin Austin TX 78758 USA Summary We derive a new generalized imaging condition based on time shifts between source and receiver wavefields. This imaging condition contrasts with other imaging techniques requiring space shifts between the two wavefields. This imaging condition is applicable to both Kirchhoff and wave-equation migrations. The transformation allows us to generate common-image gathers presented as function of either time-shift or pseudo-angle at every location in space. Inaccurate migration velocity is revealed by common-image gathers
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A Grid-Enabled System for 3-D Seismic Imaging
Authors D. Bevc, I. Musat, M. Popovici and S. E. ZarantonelloO1 - 03 SEISMIC ACQUISITION & PROCESSING A GRID-ENABLED SYSTEM FOR 3-D SEISMIC IMAGING Dimitri Bevc Iulian Musat Mihai Popovici Sergio E. Zarantonello 3DGeo Development Inc. Suite 401 4633 Old Ironsides Drive Santa Clara CA 95054 USA Summary One way to meet the increasing computational demands of the seismic imaging industry is by seamlessly enabling access to compute on demand capability. Grid computing by leveraging the Globus Toolkit (Foster & Kesselman 1997) middleware provides a framework where remote computational resources can be accessed whenever and wherever needed. The objective of this paper is to give an overview of a Grid-enabled
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A Pragmatic View of Land Multiple Attenuation Technology
More LessO1 - 04 SEISMIC ACQUISITION & PROCESSING A PRAGMATIC VIEW OF LAND MULTIPLE ATTENUATION TECHNOLOGY Panos G. Kelamis Saudi Aramco Panos G. Kelamis obtained a B.Sc. (Hon.) in Physics from the University of Athens Greece (1977) a M.Sc. and D.I.C. in Geophysics from the Imperial College of the University of London (1978) and a Ph.D. in Geophysics from the University of Alberta (1982). He worked with the Research & Development group of Western Geophysical in Houston and for Dome Petroleum in Calgary before joining Saudi Aramco in Dhahran. Within Saudi Aramco Panos held various technical and supervisory positions in Geophysical
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Faults Mapping Using Electrical Resistivity Tomography (E.R.T.)
Authors I. Oancea and A. PetrescuELECTRICAL ELECTROMAGNETICS & GPR O10 - 01 FAULTS MAPPING USING ELECTRICAL RESISTIVITY TOMOGRAPHY (E.R.T.) Introduction I. Oancea A. Petrescu INCDMRR Bucharest Romania Faults and fractures are generally speaking undesired elements in mining exploitation activity constituing the main access path for mining water. On the other hand crossing faults with mining workings is always very difficult and dangerous. There are situations when presents of faults are benefically; the case of uranium ore bodies when uraniferous mineralization is locate specially over the fractures. With this reason in mind we consider very important to posses a fast and cheap methodology to help in
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Hybrid Genetic Algorithms Derived from the Evolution Theories
Authors A. T. Basokur and I. AkcaELECTRICAL ELECTROMAGNETICS & GPR O10 - 02 HYBRID GENETIC ALGORITHMS DERIVED FROM THE EVOLUTION THEORIES Introduction Ahmet T. Basokur Irfan Akca Ankara University Turkey The derivative based inversion methods find considerable amount of applications in geophysical problems but they suffer from converging to nearest local minimum in the neighbourhood of initial guess. On the other hand the genetic algorithm that simulates biological processes could explore a wider region of parameter space. Although the algorithm may track the global minimum that corresponds to the solution they could not be used for accurate localisation. In other words the classical genetic algorithm is
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2-D Lamarckian Inversion of Resistivity Data
Authors I. Ahmet and T. BasokurELECTRICAL ELECTROMAGNETICS & GPR O10 - 03 2-D LAMARCKIAN INVERSION OF RESISTIVITY DATA Introduction Irfan Akca Ahmet T. Basokur Ankara University Turkey The purpose of the inversion algorithms is to derive the subsurface distribution of a certain type physical parameter that causes the variation of applied geophysical fields. The inversion of geophysical data is carried out by updating an initial guess supplied by the interpreter in an iterative manner. The most of inversion algorithms are based on the estimation of a new set of parameters that provides less misfit error than that of the previous iteration. The parameter change vector
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DC Resistivity Map of Hungary, based on the National Geoelectric Database
More LessELECTRICAL ELECTROMAGNETICS & GPR O10 - 04 DC RESISTIVITY MAP OF HUNGARY BASED ON THE NATIONAL GEOELECTRIC DATABASE Lazlo Sores Janos Kiss Eötvös Loránd Geophysical Institute of Hungary ( ELGI ) H-1440 Budapest Hungary Summary The National Geoelectric Database of Hungary is an expanding collection of DC and TDEM soundings. Due to a state sponsored archiving project from 1998 to 2005 4000 TDEM soundings and more than 33000 DC soundings were digitized and uploaded into the database. This data set includes most TDEM and DC data ever collected by the Lorand Eötvös Geophysical Institute (ELGI). Over 5000 soundings that was
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Resistivity Arrays in the Detection of Buried Bodies
Authors G. Apostolopoulos, C. Orfanos, G. Amolochitis, K. Leontarakis and S. StamatakiELECTRICAL ELECTROMAGNETICS & GPR O10 - 05 RESISTIVITY ARRAYS IN THE DETECTION OF BURIED BODIES G. Apostolopoulos C. Orfanos G. Amolochitis K. Leontarakis S. Stamataki National Technical University of Athens School of Mining and Metallurgy Athens Greece Introduction The resistivity method has a wide range of applications (hydrogeological environmental and geotechnical). Recently the use of multi-electrode systems gave the chance for many and easy field measurements. These measurements with resistivity tomography interpretation approach have given models of the underground with fine definition of sedimentation or exact positioning of isolated bodies. The electrode arrays used have their own advantages and disadvantages
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GPR in a Single Borehole for Determining Complex Geological Structures
Authors D. Eisenburger and V. GundelachELECTRICAL ELECTROMAGNETICS & GPR O10 - 06 GPR IN A SINGLE BOREHOLE FOR DETERMINING COMPLEX GEOLOGICAL STRUCTURES D. Eisenburger V. Gundelach Federal Institute for Geosciences and Natural Resources Hannover Germany Introduction There is a need to deposit dangerous materials safely in underground repositories. Because technical barriers only provide a limited degree of security it is important to find natural geological barriers which are effective and safe in the long term. GPR surveys from boreholes can be conducted to investigate suitable host rocks e.g. salt in this case. Method used GPR borehole logs are carried out in boreholes drilled underground as
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2D Modeling on the Base of Subsurface Gravity Measurements
More LessO11 - 01 GRAVITY MAGNETICS & GEOMAGNETISM 2D MODELING ON THE BASE OF SUBSURFACE GRAVITY MEASUREMENTS Ivana Vasiljevic University of Belgrade Serbia and Montenegro Summary A simple method for 2D gravity modeling on the base of surface and subsurface gravity measurements is presented. Interval densities calculated from gravity measurements on different levels are used to create a model. Method can be applied wherever gravity measurements are conducted along parallel profiles on different levels but it is especially suitable for deep mines. Method is designed for solving density distribution problem in cases of significant lateral density variations above and below mine
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Evaluation of Different Receiver Orientations and Receiver Separations in Magnetic Gradiometer Method
Authors M. Özgü Arisoy and Emin U. UlugererliO11 - 02 GRAVITY MAGNETICS & GEOMAGNETISM EVALUATION OF DIFFERENT RECEIVER ORIENTATIONS AND RECEIVER SEPARATIONS IN MAGNETIC GRADIOMETER METHOD M. Özgü Arisoy 1 Emin U. Ulugererli 2 1 Cumhuriyet University Faculty of Engineering Department of Geophysical Engineering 58140 Sivas Turkey 2 Ankara University Faculty of Engineering Department of Geophysical Engineering 06100 Tandogan – Ankara Turkey Summary Different receiver orientations and receiver separation have been considered for the magnetic gradiometer survey used for the exploration of shallow underground structures. Appropriate receiver orientation and the choice of receiver separation helped to delineate the boundary of subsurface structures. Horizontal (in both x and
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Interpretation of Potential Field Data Based on the Field and Enhanced Magnitude
By Arben LuloO11 - 03 GRAVITY MAGNETICS & GEOMAGNETISM INTERPRETATION OF POTENTIAL FIELD DATA BASED ON THE FIELD AND ENHANCED MAGNITUDE Arben Lulo Geophysical Consulting Albania Summary It is presented here an approach for interpretation of profile magnetic data through magnitude of potential field/derivative anomaly of geological structures approximated by simple geometries. This method gets start from the Euler equation the extended Euler equations to produce linear equations as a function of the model parameters. The equation can be solved to determine the horizontal location depth and structural index of a 2D magnetic simple source. That method is based on space relationship
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Non-Tidal Gravity Changes Across Major Lithosphere Boundaries on the Romanian Territory
Authors L. Besutiu, L. Zlagnean and M. HoromneaO11 - 04 GRAVITY MAGNETICS & GEOMAGNETISM NON-TIDAL GRAVITY CHANGES ACROSS MAJOR LITHOSPHERE BOUNDARIES ON THE ROMANIAN TERRITORY L. Besutiu L. Zlagnean M. Horomnea Institute of Geodynamics of the Romanian Academy Bucharest Romania The Romanian geodynamic network Plate boundaries on the Romanian territory and their dynamics have been recently reviewed (Besutiu 2003; Besutiu et al. 2004) with special emphasize on the role played by the Black Sea opening (Besutiu Zugravescu 2003). Short-distance large variations in the lithosphere thickness advocate for the presence of at least three tectonic plates / sub-plates in the area. East European plate (EEP) with a lithosphere
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The Secular Variation of the Geomagnetic Field in Romania in the Time Interval 1980-2004
Authors C. Demetrescu, M. Ene and V. DobricaO11 - 05 GRAVITY MAGNETICS & GEOMAGNETISM THE SECULAR VARIATION OF THE GEOMAGNETIC FIELD IN ROMANIA IN THE TIME INTERVAL 1980-2004 C. Demetrescu M. Ene V. Dobrica Institute of Geodynamics Bucharest Romania Summary Geomagnetic data obtained by QHM and proton magnetometer measurements taken in the time interval 1980-2004 in the 26 stations of the Romanian repeat station network have been processed to obtain a complex and detailed model of the lateral and temporal evolution of the horizontal component of the main geomagnetic field and its secular variation. The interpretation of data from which the sunspot cycle contribution is removed in
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Variability Of The Temperature-Dependent Susceptibility Of Loess-Paleosol Deposits From Romania
Authors C. Panaiotu, V. Hoffmann, C. E. Panaiotu and C. NeculaO12 - 01 GLOBAL CHANGES & MARINE GEOSCIENCES VARIABILITY OF THE TEMPERATURE-DEPENDENT SUSCEPTIBILITY OF LOESS-PALEOSOL DEPOSITS FROM ROMANIA 1 2 1 1 C. Panaiotu V. Hoffmann C. E. Panaiotu C. Necula 1 University of Bucharest Paleomagnetic Laboratory Bucharest Romania 2 Institut fur Geologie und Palaontologie Arbeitsbereich Geophysik Universitat Tubingen Germany Summary An investigation of the temperature-dependent susceptibility was conducted on several samples selected from 4 Quaternary loess-paleosol deposits on a East – West transect starting on the Black Sea shore and ending near the Olt Valley. The specimens were selected from recent soils chernozemic paleosols brown forest paleosols and two
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Ground Surface Temperature Variations In The Last 200 Years In Romania, From Inversion Of Borehole Temperature Data
Authors C. Demetrescu, M. Tumanian, V. Dobrica and C. BoroneantO12 - 02 GLOBAL CHANGES & MARINE GEOSCIENCES GROUND SURFACE TEMPERATURE VARIATIONS IN THE LAST 200 YEARS IN ROMANIA FROM INVERSION OF BOREHOLE TEMPERATURE DATA C. Demetrescu 1 M. Tumanian 1 V. Dobrica 1 C. Boroneant 2 1 Institute of Geodynamics Bucharest Romania 2 National Administration for Meteorology Bucharest Romania Summary Temperature data from eight boreholes in the orogen bordering the Transylvanian Basin (Eastern Carpathians Apuseni Mts.) have been inverted for ground surface temperature history (GSTH) in the last 200 years. The temperature measurements were obtained with a thermistor probe (sensitivity in the 0.01 K range) using the stop and
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Interaction Of Petroleum Deposits To Atmosphere In Formation Of Tornadoes
By S. MoriGLOBAL CHANGES & MARINE GEOSCIENCES O12 - 03 INTERACTION OF PETROLEUM DEPOSITS TO ATMOSPHERE IN FORMATION OF TORNADOES Shuji Mori 3755 Mountview Rd. Columbus OH 43220 USA Summary Specific geophysical features such as oil and gas deposits may interact atmospheric environment. A deposit of petroleum or oil and gas seems to induce localized severe meteorological phenomena such as tornado upon a thunderstorm front passage over the deposits. Probability and statistic massive data reduction are demonstrated by employing continental U.S. proven oil and gas deposit distribution provided by DOE 1 and >40000 tornado occurrence recorded by NOAA 2 over decades to
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Harvesting The Gas Hydrates In The Black Sea: Technology And Economics
Authors C. Cranganu and B. NitzovGLOBAL CHANGES & MARINE GEOSCIENCES O12 - 04 HARVESTING THE GAS HYDRATES IN THE BLACK SEA: TECHNOLOGY AND ECONOMICS Summary Constantin Cranganu 1 Boyko Nitzov 2 1 The City Univrsity of New York Brooklyn College USA 2 University of Oklahoma USA Gas hydrates (clathrates) have been known for 200+ years; for over 60 years they have been studied by the oil and gas industry. Recently a flood of publications has covered in great detail many of the branches of the gas hydrates “knowledge tree”. Suffice to point out that just the Annals of the New York Academy of Sciences since
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Multibeam Backscatter Seabed Classification
Authors X. Monteys and D. InamdarGLOBAL CHANGES & MARINE GEOSCIENCES O12 - 05 MULTIBEAM BACKSCATTER SEABED CLASSIFICATION X. Monteys D. Inamdar Geologic Survey of Ireland Dublin Ireland The Irish National Seabed Survey is now into its sixth and final year of acquisition programme. The Irish continental shelf deeper than 200 meters was completed in 2002 and since then the survey operations have concentrated in coastal areas Zone 2 water depths ranging from 0 to 200m utilizing the R.V Celtic Explorer. Paper charts to 1:60 000 scale from the Malin Sea north-west of Ireland together with a GIS database have been produced to serve as a
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Altimeter Range Determination And Applications Using A Transponder
Authors E. Cristea, W. Hausleitner and P. PesecGLOBAL CHANGES & MARINE GEOSCIENCES O12 - 06 ALTIMETER RANGE DETERMINATION AND APPLICATIONS USING A TRANSPONDER Summary E. Cristea; W. Hausleitner; P. Pesec Space Research Institute Austrian Academy of Sciences Graz Austria Satellite altimetry provides a precise measure of the vertical distance of the satellite borne altimeter to the instantaneous sea surface. The accuracy of this distance depends on the calibration of the altimeter the quality of the reflecting target and the proper estimate of path delay. The general design characteristics for absolute altimeter calibration implies a large number of measurements to reduce the random errors diversity of measurement techniques
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Satellite Remote Sensing And Gps Data For Seismic Hazard Analysis In Vrancea Area
Authors M. Zorana and D. MateciucREMOTE SENSING & SATELLITE IMAGERY O13 - 01 SATELLITE REMOTE SENSING AND GPS DATA FOR SEISMIC HAZARD ANALYSIS IN VRANCEA AREA Summary Maria Zorana 1 Doru Mateciuc 2 1 National Institute of R&D for Optoelectronics Remote Sensing Dept. MG5 Bucharest-Magurele Romania 2 National Institute of Earth Physics Bucharest-Magurele Romania The seismic hazard of Romania is relatively high mainly due to the subcrustal earthquakes located at the sharp bend of the Southeast Carpathians in Vrancea region one of the most seismically active area in Europe. Vrancea area is assumed to be a conjunction of 4 tectonic blocks which lie on the
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Recognition Of Iron-Containing Ore Minerals And Rocks Using Remotely Sensed Data
Authors D. Borisova, H. Nikolov, M. Danov and R. KanchevaREMOTE SENSING & SATELLITE IMAGERY O13 - 02 RECOGNITION OF IRON-CONTAINING ORE MINERALS AND ROCKS USING REMOTELY SENSED DATA D.Borisova H.Nikolov M.Danov R.Kancheva Solar-Terrestrial Influences Laboratory – Bulgarian Academy of Sciences Sofia Bulgaria Summary Abstract Recognition of iron-containing ore minerals and rocks using remotely sensed data is a special case. Spectral mixture analysis has as one of the basic objective the definition of subpixel (subclass) proportions of spectral endmembers (classes) which are related to mappable surface constituents. Spectral mixture analysis decomposes the mixed pixel determining the fractions of each spectral endmember which combine to produce the mixed pixel's spectral signature.
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Tectonic Alignments Analysis In Oas-Gutai Mts. Area (Nw Romania) By Remote Sensing And Geophysical Methods
Authors D. Dordea, V. Sprinceana and A. DobrescuProspectiuni S.A.O13 - 03 REMOTE SENSING & SATELLITE IMAGERY TECTONIC ALIGNMENTS ANALYSIS IN OAS-GUTAI MTS. AREA (NW ROMANIA) BY REMOTE SENSING AND GEOPHYSICAL METHODS D. Dordea 1 V. Sprinceană 1 A. Dobrescu 2 1 Prospectiuni S.A. Caransebes Str. 1 Bucharest Romania 2 Geological Institute of Romania Caransebes Str. 1 Bucharest Romania The Baia Mare region (East Carpathians - Romania) is one of the famous ore deposit areas in Europe with a two centuries mining history (gold cooper base metal) which offered to science a huge mineralogical heritage. Geological mapping on the area began in the last decade of the 19 th
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The 3D Seismic Performance For The Thin Reservoir Evaluation In The Moesian Platform (Bilciuresti Area)
Authors M. Tanasa, C. Manea and M. CismaruO14 - 01 SEISMIC MODELLING & INTERPRETATION THE 3D SEISMIC PERFORMANCE FOR THE THIN RESERVOIR EVALUATION IN THE MOESIAN PLATFORM (BILCIURESTI AREA) Mihai Tanasa 1 Constantin Manea 1 Marin Cismaru 2 1 S.C. Prospectiuni S.A. Bucharest Romania 2 S.N. Romgaz S.A. Medias Romania Introduction. The Upper Pliocen (Meotian Sarmatian) sedimentary in the northern area of the Moesian Platform has many clastic reservoirs. Generally the reservoirs have thin thickness (average 10 m or under 10 m) and there are in the 1900-2500 m depth interval. The adequate 3D seismic works (acquisition processing and interpretation) represent the support for the identification and
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Do Seismic Attributes Reduce Exploration Risk In The Carpathian Foredeep, Northern Romania?
Authors J. Donato and L. IonescuO14 - 02 SEISMIC MODELLING & INTERPRETATION DO SEISMIC ATTRIBUTES REDUCE EXPLORATION RISK IN THE CARPATHIAN FOREDEEP NORTHERN ROMANIA? John Donato 1 Laurentiu Ionescu 2 1 Falcon Romania S.R.L. and Merlin Energy Resources Ltd. United Kingdom 2 S.N.G.N. Romgaz S.A. Romania Introduction Falcon Oil and Gas Romania s.r.l operates two Groups currently exploring three blocks located within northeastern Romania (see Figure 1): (i) Block EIII-1 (Brodina) and Block EIII-3 (Cuejdiu) Falcon Oil and Gas Romania s.r.l. (Operator) 28.75% SNGN Romgaz S.A. 37.5% Europa Oil & Gas Ltd. 28.75% Millennium Intl. Resources Corp. 5.0%. (ii) Block EIII-4 (Bacau) Falcon Oil and
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Advancing 3D Seismic Interpretation Methods For Unconventional Fractured Gas Reservoirs
By J. J. ReevesO14 - 03 SEISMIC MODELLING & INTERPRETATION ADVANCING 3D SEISMIC INTERPRETATION METHODS FOR UNCONVENTIONAL FRACTURED GAS RESERVOIRS James J. Reeves GeoSpectrum Inc. Midland TX 79702-3399 USA Fractures are often responsible for enhancing production in oil and gas reservoirs. They play an important role for defining sweet spots in many producing regions of the world. For the last 5 years Dr. James J. Reeves Principal Investigator has worked for the U. S. Department of Energy to advance a new 3D seismic interpretation method for tight gas fractured reservoirs in the San Juan Basin of New Mexico (see Reeves and Smith World
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3D Seismic Integrated Interpretation The Oligocene Of Tutana - Zarnesti Area – Getic Depression
Authors M. Vasiliu, E. Nicolae and I. CincaO14 - 04 SEISMIC MODELLING & INTERPRETATION 3D SEISMIC INTEGRATED INTERPRETATION THE OLIGOCENE OF TUTANA - ZARNESTI AREA – GETIC DEPRESSION Mirela Vasiliu 1 Eugenia Nicolae 2 Irina Cinca 1 1 PETROM S.A. Bucharest Romania 2 C.C.P.E.G. Campina Romania The Getic Depression constitutes the Tertiary foredeep that developed to the south of the Southern Carpathians and lies between Dambovita Valley to the est and the Danube to the west being bordered to the south by the Moesian Platform through the Pericarpathian fault. The Getic Depression evolved as a sedimentary basin from the Paleogene till the end of the Pliocene. Journal
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A Crustal Structure Model From The North Dobrogea Through The Vrancea Region To The Western Transylvania
Authors V. Raileanu, F. Hauser, W. Fielitz, C. Dinu, A. Bala, M. Landes and C. ProdehlO14 - 05 SEISMIC MODELLING & INTERPRETATION A CRUSTAL STRUCTURE MODEL FROM THE NORTH DOBROGEA THROUGH THE VRANCEA REGION TO THE WESTERN TRANSYLVANIA V. Raileanu 1 F. Hauser 2 W. Fielitz 2 C. Dinu 3 A. Bala 1 M. Landes 2 C. Prodehl 2 1 National Institute for Earth Physics Bucharest Romania 2 University of Karlsruhe Germany 3 University of Bucharest Romania Introduction Vrancea region is one of the highest risk seismic area from SE Europe. Two large earthquakes occurred in the last century resulting in many casualties within densely populated areas. To increase the knowledge of the causes which
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Tomography And Non-Linear Inversion In The Southeast Carpathians
Authors R. B. Raykova and G. F. PanzaO14 - 06 SEISMIC MODELLING & INTERPRETATION TOMOGRAPHY AND NON-LINEAR INVERSION IN THE SOUTHEAST CARPATHIANS Reneta B. Raykova 1 Giuliano F. Panza 2 1 Geophysical institute Sofia Bulgaria 2 DST University of Trieste and SANG group ICTP Trieste Italy Summary A set of shear-wave velocity models of the lithosphere-asthenosphere system in southeast Carpathians is determined by non-linear inversion of surface wave group velocity data. The local dispersion curves are constructed for the period range 10 -150 s combining regional and global Rayleigh wave group velocity data. The lithosphere-asthenosphere velocity structure is reliably reconstructed to depths of about 250 km. The
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The Use Of P- And S-Wave Pulses To Identify Seismic Wave Attenuation In South Eastern Carpathians Area
Authors M. Popa, E. Popescu, A. O. Placinta, M. Radulian, B. Grecu and G.F. PanzaO15 - 01 SEISMOLOGY & EARTHQUAKES THE USE OF P- AND S-WAVE PULSES TO IDENTIFY SEISMIC WAVE ATTENUATION IN SOUTH EASTERN CARPATHIANS AREA M. Popa 1 E. Popescu 1 A. O. Placinta 1 M. Radulian 1 B. Grecu 1 G.F. Panza 2 1 National Institute For Earth Physics Bucharest – Magurele Romania 2 Universita Di Trieste and Abdus Salam International Centre For Theoretical Physics Italy In many active subduction areas (e.g. Kadinsky-Cade et al. 1981; Chiu et al. 1985; Bijwaard et al. 1998; Tsumura et al. 2000) the body waves characteristics show systematic regional-scale variations in the dominant period and
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Preliminary Results Of Shear Waves Splitting At Romanian Broad-Band Network
More LessSEISMOLOGY & EARTHQUAKES O15 - 02 PRELIMINARY RESULTS OF SHEAR WAVES SPLITTING AT ROMANIAN BROAD-BAND NETWORK Summary Marian Ivan 1 Mihaela Popa 2 Daniela Ghica 2 1 University Of Bucharest Faculty of Geology and Geophysics Romania 2 National Institute for Earth Physics Bucharest - Magurele Romania Preliminary results of shear-waves splitting performed at the Romanian Broad-Band network are presented for the time period starting with 2001 January 1 st . For MLR station the average direction (25 values) of the fastest axis (D) is 52°±4° (95% confidence level) and the delay time is δt=1.1±0.1 seconds. For the broad-band instrument BUR31
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Vrancea Intermediate-Depth Earthquakes In Romania -Seismicity And Mechanisms-
Authors N. Hurukawa, M. Popa and M. RadulianO15 - 03 SEISMOLOGY & EARTHQUAKES VRANCEA INTERMEDIATE-DEPTH EARTHQUAKES IN ROMANIA -SEISMICITY AND MECHANISMS- Nobuo Hurukawa 1 Mihaela Popa 2 Mircea Radulian 2 1 International Institute of Seismology and Earthquake Engineering (IISEE) Building Research Institute Tsukuba Ibaraki 305-0802 Japan 2 National Institute of Physics of the Earth (INFP) Bucharest Romania Isolated intermediate-depth earthquakes occur at the SE corner of the Carpathian arc in central Romania. The depth ranges from 60 to 200 km and epicenters concentrate 40 km x 90 km area in Vrancea. Since there is no plate boundary at present they say there was a paleosubduiction zone. The
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Temporal Variation Profiles Of Seismicity Along Seismotectonic Zones In Greece
Authors I. Baskoutas, G. Papadopoulos, T. Rontoyianni and George StavrakakisSEISMOLOGY & EARTHQUAKES O15 - 04 TEMPORAL VARIATION PROFILES OF SEISMICITY ALONG SEISMOTECTONIC ZONES IN GREECE Ioannis Baskoutas 1 George Papadopoulos 2 Theodora Rontoyianni 3 George Stavrakakis 1 1 Geodynamic Institute National Observatory of Athens Greece 2 Earthquake Planning and Protection Organization of Greece 3 School of Mining and Metallurgical Engineering National Technical University of Athens Greece Summary Detailed temporal variation analysis of seismic parameters is performed in consecutive seismotectonic zones along NE-SW direction of Hellenic arc. in order to investigate their temporal profiles. For this investigation the logarithm of the number of earthquakes logN estimates of b-value and energy
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3D P-Wave Velocity Structure Beneath Sultandagi, Afyon, Turkey, From Local Earthquake Tomography
Authors A. N. Dinç and A. KaramanO15 - 05 SEISMOLOGY & EARTHQUAKES 3D P-WAVE VELOCITY STRUCTURE BENEATH SULTANDAĞI AFYON TURKEY FROM LOCAL EARTHQUAKE TOMOGRAPHY Aysun Nilay Dinç and Abdullah Karaman Department of Geophysics Istanbul Technical University Maslak 34469 Istanbul Turkey Summary Sultandağı fault in Afyon Turkey remains within a transition zone between the extentional tectonic regime in the west and Central Anatolia Ova Province. The Sultandağı fault had been silent until October 1 1995 earthquake with a magnitude of ML= 5.9. This earthquake was followed by two more devastating earthquakes on Februrary 3 2002 with magnitudes of Mw=6.5 and Mw=5.8. These last earthquakes inflicted damage in
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Stochastic Modelling Of The Relaxation Process After The M=9.0, Sumatra Earthquake Of December 26, 2004; Preliminary Analysis
Authors D. Gospodinov, V. Karakostas and R. PapadimitriouO15 - 06 SEISMOLOGY & EARTHQUAKES STOCHASTIC MODELLING OF THE RELAXATION PROCESS AFTER THE M=9.0 SUMATRA EARTHQUAKE OF DECEMBER 26 2004; PRELIMINARY ANALYSIS Dragomir Gospodinov 1 Vassilis Karakostas 2 Ritsa Papadimitriou 2 1 Geophysical Institute of the Bulgarian Academy of Sciences 4000 Povdiv Bulgaria 2 Geophysics Department University of Thessaloniki GR54124 Thessaloniki Greece Introduction One of the strongest earthquakes after 1900 with magnitude M=9.0 took place on December 26 in Sumatra Indonesia causing a tsunami wave and more than 150 000 casualties. The shock triggered numerous aftershocks some of them being very strong and causing secondary aftershock activity. At a
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A Study Regarding The Relationships Between Dynamic Parameters And Drillability Index Of Some Rocks
Authors R. Altindag, Z. Kamaci, A. Etiz and N. SengünO16 - 01 BOREHOLE GEOPHYSICS & PHYSICAL PROPERTIES OF ROCKS A STUDY REGARDING THE RELATIONSHIPS BETWEEN DYNAMIC PARAMETERS AND DRILLABILITY INDEX OF SOME ROCKS Raşit Altındağ 1 Züheyr Kamacı 2 Ali Etiz 2 Nazmi Şengün 1 1 SDU Department of Mining Engineering 32260 Isparta Turkey 2 SDU Department of Geophysical Engineering 32260 Isparta Turkey Summary The factors affecting the rock drillability can be divided into three main categories such as geological properties machine parameters and operating parameters. The geological properties mainly affect the drilling performance and the bit wear. Machine and the operating parameters can be somewhat controlled but the
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Bayesian Rock-Physics Inversion For Fracture Characterization
More LessBOREHOLE GEOPHYSICS & PHYSICAL PROPERTIES OF ROCKS O16 - 02 BAYESIAN ROCK-PHYSICS INVERSION FOR FRACTURE CHARACTERIZATION D. Sava 1 G. Mavko 2 1 Bureau of Economic Geology The University of Texas at Austin USA 2 Geophysics Department Stanford University USA Summary We present a methodology for quantitative integration of geological information with seismic data using rock physics theories formulated in the framework of an inverse problem. We illustrate this method with fracture characterization of hydrocarbon reservoirs. There are different types of information that can be used to study fractures such as geologic seismic and well-log and each one of them
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Determination Of Water Saturation For Anisotropic Formations
By I. MalureanuBOREHOLE GEOPHYSICS & PHYSICAL PROPERTIES OF ROCKS O16 - 03 DETERMINATION OF WATER SATURATION FOR ANISOTROPIC FORMATIONS I. Malureanu Oil and Gas University of Ploiesti Romania The calculation of water saturation in the flushed zone and uninvaded zone requires the following data: porosity true resistivity shale resistivity shale volume water resistivity and empirical factors. The evaluation of fluids saturation in shally formation is more difficult because all logs are affected by shale existence. The influence of shale depends on its amount and physical properties. A lot of equations based on physical models and experimental data.were elaborated to deteriminate the water
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Using Artificial Neural Networks To Predict Abnormal Pressures In The Anadarko Basin, Oklahoma
By C. CranganuO16 - 04 BOREHOLE GEOPHYSICS & PHYSICAL PROPERTIES OF ROCKS USING ARTIFICIAL NEURAL NETWORKS TO PREDICT ABNORMAL PRESSURES IN THE ANADARKO BASIN OKLAHOMA Constantin Cranganu The City University of New York Brooklyn College USA Summary Many sedimentary basins throughout the world exhibit areas with abnormal pore-fluid pressures (higher or lower than normal or hydrostatic pressure). Predicting pore pressure and other parameters (depth extension magnitude etc.) in such areas is a challenging task. The compressional acoustic (sonic) log (DT) is often used as a predictor because it responds to changes in porosity or compaction produced by abnormal pore-fluid pressures. Unfortunately the
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Dominante Rates Of Natural Radioelements As An Indicator Of Concentration Of Precious Elements And Polymetals
By A. DodonaO16 - 05 BOREHOLE GEOPHYSICS & PHYSICAL PROPERTIES OF ROCKS DOMINANTE RATES OF NATURAL RADIOELEMENTS AS AN INDICATOR OF CONCENTRATION OF PRECIOUS ELEMENTS AND POLYMETALS Anastas Dodona Albanian Geological Survey Geophysical-Geochemical Department Tirana Albania Gamma spectrometric surveys of natural radio elements have noticeably been developed in the recent years owing to the priorities they afford because of other geoanalytical methods. Except the values they have for the quantitative determinations of U Th K a special importance assume the values of their ratio values and first of all dominant of such values that are directly connected with non radioactive elements concentrations
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Calculation Of Heat Flow And Pn Velocity Values Of West Anotalia Using Curie Point Depth Values
Authors M. Mihci, A. Buyuksarac, O. Bektas and A. AtesO17 - 01 HEAT FLOW & GEOTHERMAL RESOURCES CALCULATION OF HEAT FLOW AND Pn VELOCITY VALUES OF WEST ANOTALIA USING CURIE POINT DEPTH VALUES Metin Mihci 1 Aydin Buyuksarac 2 Ozcan Bektas 2 Abdullah Ates 3 1 General Directorate of Iller Bankasi Turkey 2 Cumhuriyet University Department of Geophysical Engineering Turkey 3 Ankara University Department of Geophysical Engineering Turkey Summary West Anatolia exhibits an extensional regime and also it is seismically active. In this region there are widespread volcanism and geothermal resources. One of the best ways to understand the deep structure of west Anatolia is to observe Pn wave
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Exploration Of A Low-Temperature Hydrothermal System Using Geophysical Methods In Anzer Glacial Valley, Ikizdere, Rize, Turkey
Authors A. Karaman and A. N. DinçO17 - 02 Summary HEAT FLOW & GEOTHERMAL RESOURCES EXPLORATION OF A LOW-TEMPERATURE HYDROTHERMAL SYSTEM USING GEOPHYSICAL METHODS IN ANZER GLACIAL VALLEY İKIZDERE RIZE TURKEY Abdullah Karaman Aysun Nilay Dinç Istanbul Technical University Department of Geophysics Maslak 80626 İstanbul Turkey The Anzer glacier valley exhibits limited evidence for low-temperature hydrothermal system. Low-temperature hydrothermal systems are sometimes ignored since they are not useful for the energy production. However in areas where natural beauty is prominent as in the Anzer valley hydrothermal resources may add a significant value to the local economy by triggering investment for recreational centers. With this study we
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Time Dependent Thermal State Of The Litosphere In The Foreland Of The Eastern Carpathians Bend. Insights From New Geothermal Measurements And Modelling Results
Authors C. Demetrescu, H. Wilhelm, M. Tumanian, A. Damian, V. Dobrica and M. EneO17 - 03 HEAT FLOW & GEOTHERMAL RESOURCES TIME DEPENDENT THERMAL STATE OF THE LITOSPHERE IN THE FORELAND OF THE EASTERN CARPATHIANS BEND. INSIGHTS FROM NEW GEOTHERMAL MEASUREMENTS AND MODELLING RESULTS 1 2 1 1 1 1 C. Demetrescu H. Wilhelm M. Tumanian A. Damian V. Dobrica M. Ene 1 Institute of Geodynamics Bucharest Romania 2 Geophysical Institute of Karlsruhe University Germany Summary The time-dependent heat budget and thermal evolution of the lithosphere along a 120 km long profile in the foreland of the Eastern Carpathians bend is presented. The study area a complex tectonic environment in the vicinity of
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The Type Curves With Skin And Wellbore Storage Effect For Analyzing Interference Test In Naturally Fractal Reservoir
Authors T. A. Jelmert and A. MbaiO17 - 04 HEAT FLOW & GEOTHERMAL RESOURCES THE TYPE CURVES WITH SKIN AND WELLBORE STORAGE EFFECT FOR ANALYZING INTERFERENCE TEST IN NATURALLY FRACTAL RESERVOIR Tom Aage Jelmert Afar Mbai Petroleum Engineering and Applied Geophysics NTNU Trondheim Norway Summary The objective of this paper is to investigate the transient pressure behavior of naturally fractured reservoirs with fractal characteristics. This work is based on the findings of previous studies where it is shown that the networks of fractures in some reservoirs are fractals. Thus using this assumption an approximate analytical solution for fractal systems is derived in the Laplace space. By
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S-Wave Coda Q Estimates For The Regions Of Fethiye-Burdur, Büyükmenderes And Antalya Golf-Aksehir In Sw Turkey
Authors S Sahin, M. Erduran, Ö. Alptekin, Ö. Çakir and T. TezelO18 - 01 SEISMIC MODELLING & INTERPRETATION S-WAVE CODA Q ESTIMATES FOR THE REGIONS OF FETHİYE-BURDUR BÜYÜKMENDERES AND ANTALYA GOLF-AKŞEHİR IN SW TURKEY Şakir Şahin 1 Murat Erduran 2 Ömer Alptekin 3 Özcan Çakir 2 Timur Tezel 2 1 Süleyman Demirel University Department of Geophysical Engineering İsparta Turkey 2 Karadeniz Technical University Department of Geophysical Engineering Trabzon Turkey 3 İstanbul University Department of Geophysical Engineering İstanbul Turkey Summary S-wave crustal quality factors are estimated as a function of frequency at varying lapse times. Two different methods are utilized. The first method that results the coda-wave quality factor Qc is based
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Structural Characteristics, Seismic Facies And Depositional Framework Of Eocene Deposits, In Central Romanian Black Sea Offshore
Authors C. Dinu, D. Tambrea and A. RaileanuO18 - 02 SEISMIC MODELLING & INTERPRETATION STRUCTURAL CHARACTERISTICS SEISMIC FACIES AND DEPOSITIONAL FRAMEWORK OF EOCENE DEPOSITS IN CENTRAL ROMANIAN BLACK SEA OFFSHORE Corneliu Dinu 1 Dorina Tambrea 2 Adriana Raileanu 3 1 University of Bucharest Faculty of Geology and Geophysics Bucharest Romania 2 Rompetrol S.A. Bucharest Romania 3 Petrom - Geological Exploration Research and Design Center Branch Bucharest Romania Summary The analysis of seismic and well data from the Istria Depression Romanian Black Sea offshore enabled us to define an integrated model of Eocene evolution of the area.: Following Paleocene regional uplift and subaerial erosion of the Cretaceous shelf
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Incoherent Acoustic Response Of Visco-Plastic Salt Intrusions As Being Diagnostic For Abnormal Fluid Pressure Regimes In The Cilicia-Adana Basin, Ne Mediterranean Sea
More LessO18 - 03 SEISMIC MODELLING & INTERPRETATION INCOHERENT ACOUSTIC RESPONSE OF VISCO-PLASTIC SALT INTRUSIONS AS BEING DIAGNOSTIC FOR ABNORMAL FLUID PRESSURE REGIMES IN THE CILICIA-ADANA BASIN NE MEDITERRANEAN SEA Mustafa Toker 1 Vedat Ediger 2 1 Istanbul Technical University Eurasia Institute of Earth Sciences 34469 Maslak Istanbul Turkey 2 Middle East Technical University Institute of Marine Sciences 33731 Erdemli Mersin Turkey Introduction The Cilicia-Adana Basin the northeastern corner of the Mediterranean formed as a result of collisional processes is located in between Turkey and Cyprus in Figure 1. It is a downfaulted inner and peripheral region and subjected to the
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The Orientation Of The Nonlinear Stress-Strain Relations To Acoustic Parameters And Elastic Modulus For Irreversible Plastic Strain Field In The Cilicia-Adana Basin, Ne-Mediterranean Sea
More LessO18 - 04 SEISMIC MODELLING & INTERPRETATION THE ORIENTATION OF THE NONLINEAR STRESS-STRAIN RELATIONS TO ACOUSTIC PARAMETERS AND ELASTIC MODULUS FOR IRREVERSIBLE PLASTIC STRAIN FIELD IN THE CILICIA- ADANA BASIN NE-MEDITERRANEAN SEA Mustafa Toker 1 Vedat Ediger 2 1 Istanbul Technical University Eurasia Institute of Earth Sciences 34469 Maslak Istanbul Turkey 2 Middle East Technical University Institute of Marine Sciences 33731 Erdemli Mersin Turkey Introduction The Cilicia-Adana Basin in Figure 1 had intensely experienced the Messinian salinity crisis all over the Mediterranean. Messinian evaporites extensively deposited in the basin which is subjected to the great delta dynamics and the rapid
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Analytic Solution To Nmo-Velocity Surface In Ti Media With An Arbitrary Symmetry Axis
More LessO18 - 05 SEISMIC MODELLING & INTERPRETATION ANALYTIC SOLUTION TO NMO-VELOCITY SURFACE IN TI MEDIA WITH AN ARBITRARY SYMMETRY AXIS Jianzhong Zhang Chen Yao Chongtao Hao Minggang Cai Institute of Geology Earthquake Administration Beijing China Summary Following the concept of NMO-velocity surface introduced by Grechka and Tsvankin we present the analytic solution to NMO-velocity surface in transversely isotropic media with an arbitrary axis of symmetry (ATI). The solution is in accordance with previous results given by some authors when limited to some special cases. Computation of effective NMO velocities in 3D layered TI media with plane dipping interfaces can be
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Empirical Attenuation Relationship Of Pga Based On 17 August 1999 Kocaeli And 12 November 1999 Duzce Earthquakes Data
Authors E. Ulutas, T. Serkan Irmak, I.Talih Güven, B. Tunç, T. Çetinol, D. Çaka, N. Alpaslan, S. Tunç, M. Asçi, S. Baris and M. Firat ÖzerO19 - 01 SEISMOLOGY & EARTHQUAKES EMPIRICAL ATTENUATION RELATIONSHIP OF PGA BASED ON 17 AUGUST 1999 KOCAELI AND 12 NOVEMBER 1999 DUZCE EARTHQUAKES DATA Ergin Ulutaş T. Serkan Irmak İ.Talih Güven Berna Tunç Taciser Çetinol Deniz Çaka Nuray Alpaslan Süleyman Tunç Metin Aşçi Şerif Bariş M. Fırat Özer Kocaeli University Earth and Space Sciences Research Center Turkey Summary Using a database of 390 strong ground motion recordings from 29 earthquakes (Mw>4.5) empirical PGA (peak ground acceleration) attenuation relations have been derived for the peak horizontal components of records. The records are of the main and aftershocks of 17 August 1999
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Estimates Of Stress Directions By Inversion Of Earthquake Fault Plane Solutions From North Anatolian Faut Zone To North Anatolian Through
More LessO19 - 02 SEISMOLOGY & EARTHQUAKES ESTIMATES OF STRESS DIRECTIONS BY INVERSION OF EARTHQUAKE FAULT PLANE SOLUTIONS FROM NORTH ANATOLIAN FAUT ZONE TO NORTH ANATOLIAN THROUGH Nihan Sezgin Ali Pinar Istanbul University Engineering Faculty Department of Geophysics 34850 Avcilar İstanbul Turkey Summary Gephart’s method for stress tensor inversion of focal mechanism solutions has been applied to a set of 230 events with magnitude ranging from 1.3 to 7.4 occurred during the period 1943 and 2003 along the western extension of the North Anatolian Fault Zone (NAFZ) (near Duzce) to the North Aegean Through (NAT) (near Evia Basin). Data are collected
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Potassium Magnetics Technology For Earthquake Research
By I. HrvoicSEISMOLOGY & EARTHQUAKES O19 - 03 POTASSIUM MAGNETICS TECHNOLOGY FOR EARTHQUAKE RESEARCH Ivan Hrvoic GEM Systems Inc. Canada Magnetic search for Earthquake precursors goes back more than 25 years and it’s been disappointing and frustrating most of the time. Crucial parameters of magnetics search require instruments with: (a) High sensitivity (b) Good long-term stability (c) Possibility of suppression or elimination of the influences of non-earthquake origins i.e. environmental variations of all sorts (including diurnal variations ionspheric variations etc.) and anthropogenic variations. The last requirement proved itself as a most formidable one considering very local character of earthquake based magnetic anomalies
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Predictability And Unpredictability Of Large Earthquakes And The Prediction Of Vrancea Earthquakes
By G. PurcaruO19 - 04 SEISMOLOGY & EARTHQUAKES PREDICTABILITY AND UNPREDICTABILITY OF LARGE EARTHQUAKES AND THE PREDICTION OF VRANCEA EARTHQUAKES George Purcaru Institute of Meteorology and Geophysics Frankfurt Germany George Purcaru Dr. Phil. Seismology University of Oulu Finland graduated from the University of Bucharest Faculty of Mathematics-Physics. He also finished one‘s studies at (evening) Bucharest University in Philosophy. He worked in seismology at the Astronomical Obsevatory of Bucharest Center of Geophysics of Academy of Sceince of Romania and Institute of Geology and Geophysis. From 1974 he continued the activity at NORSAR Institute of the Royal Council of Science and Technology Oslo. In
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Environmental Geophysics - Challenges for the Future
More LessO2 - 01 Summary ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS ENVIRONMENTAL GEOPHYSICS – CHALLENGES FOR THE FUTURE Snezana Komatina-Petrovic Geophysical Institute Nis-Naftagas Serbia and Montenegro Environmental geophysics is new discipline of applied geophysics based on methods of mining and engineering geophysics and directed to near-surface exploration. The following problems are solved: waste disposal groundwater protection against contamination contamination in agriculture exploration in archaeology and preserving cultural heritage vibrations and noise monitoring investigations related to problems of engineering geology snow and ice exploration etc. In the paper problems to which attention of geophysicists in the future should be directed to are discussed as
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Geoelectrical Investigation of Dams in Georgia - CIS
Authors A. Bratus, E. Del Negro and D. Nieto YabarO2 - 02 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS GEOELECTRICAL INVESTIGATION OF DAMS IN GEORGIA - CIS Antonio Bratus Elvio Del Negro Daniel Nieto Yabar Istituto Nazionale di Oceanografia e di Geofisica Sperimentale – OGS 34010 Sgonico (TS) Italy Summary This is a case history about a collaboration project between Italy and Georgia in the investigation and monitoring of dams in Georgia. The topic of this abstract is the results of a geoelectrical survey. Two dams having different technical features were investigated. Although there were many difficulties for the data acquisition the results are very interesting. Introduction This project is an initiative
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Outlook on the Possibility for Slope Stability Evaluation according to Petrophysical Data
By A. FrasheriO2 - 03 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS OUTLOOK ON THE POSSIBILITY FOR SLOPE STABILITY EVALUATION ACCORDING TO PETROPHYSICAL DATA Alfred Frasheri Faculty of Geology and Mining Polytechnic University of Tirana Albania Results of the geophysical data for in-situ evaluation of the physical-mechanical properties of the rocks in the unstable slopes in Albania are presented. Albania represents a mountainous country with complicated geology. There are unstable mountain and hill slopes. Developing of new landslides or re-activation of the old ones is mainly due to construction works. Special constructions such as hydrotechnical works civil industrial urban and rural constructions and constructions in
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Uncertainty and Ambiguity of Measurements in Wide Area Networks of Sensing Devices Measuring Geophysical Parameters
Authors J. Sarivougioukas, G. Sideris, P. Sotiropoulos and J. BakerO2 - 04 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS UNCERTAINTY AND AMBIGUITY OF MEASUREMENTS IN WIDE AREA NETWORKS OF SENSING DEVICES MEASURING GEOPHYSICAL PARAMETERS John Sarivougioukas 1 George Sideris 2 Pavlos Sotiropoulos 2 James Baker 3 1 General Hospital of Athens G. Gennimatas 154 Mesogeion Avenue Athens 11527 Greece 2 TerraMentor e.e.i.g. Serifou 23 Holargos 155 62 Attikis Greece 3 Selor e.e.i.g. Saffierstraat 101c 1074 GP Amsterdam The Netherlands Summary The study of the geophysical phenomena requires a plethora of evident and discrete data to draw conclusions. The examination of data obliges sometimes to focus either on local observations or to investigate
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A Non-Destructive Pulse Neutron Multiple Detector Tool for Use in Environmental, Hydrocarbon and Mineral Exploration Work
Authors G. Sideris, P. Sotiropoulos, N. Arvanitidis, A. Dimitriadis, G. Gaal, K. Rasilainen, K. Buckup, J. Baker, N. Galunov and R. J. De MeijerO2 - 05 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS A NON-DESTRUCTIVE PULSE NEUTRON MULTIPLE DETECTOR TOOL FOR USE IN ENVIRONMENTAL HYDROCARBON AND MINERAL EXPLORATION WORK George Sideris 1 Pavlos Sotiropoulos 1 Nikos Arvanitidis 2 Alekos Dimitriadis 2 Gabriel Gaal 3 Kalevi Rasilainen 3 Klaus Buckup 4 James Baker 5 Nikolaj Galunov 5 Robert J. De Meijer 6 1 TerraMentor E.E.I.G. Sarantaporou 8 & Str. Tompra Ag. Paraskevi 15342 Greece 2 Institute of Geology and Mineral Exploration Regional Division of Central Macedonia Fragkon 1 546 26 Thessaloniki Greece 3 Geological Survey of Finland Finland 4 DBM - Dr. Buckup Hohenwarther Str. 2 39126
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Magnetic Susceptibility as a Proxy for Heavy Metals in Urban Areas from Romania
Authors C.G. Panaiotu, L. Dumitrescu, C. E. Panaiotu and E. BilalO2 - 06 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS MAGNETIC SUSCEPTIBILITY AS A PROXY FOR HEAVY METALS IN URBAN AREAS FROM ROMANIA C.G. Panaiotu 1 L. Dumitrescu 2 C. E. Panaiotu 2 E. Bilal 3 1 University of Bucharest Faculty of Physics Bucharest Romania 2 University of Bucharest Faculty of Geology and Geophysics Bucharest Romania 3 Ecole Superieur des Mines Saint Etienne France Summary The present work concern the application of magnetic susceptibility measurements as a proxy for heavy metals pollution of top soils from two urban areas from Romania. We have measured magnetic susceptibility and heavy metal content (Pb Cu and
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Numerically Modeling the Unthinkable: When Reactor Core Melt Meets Groundwater
By I. VladO2 - 07 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS NUMERICALLY MODELING THE UNTHINKABLE: WHEN REACTOR CORE MELT MEETS GROUNDWATER Ioan Vlad Department of Geophysics Stanford University CA 94305-2215 USA Summary Disaster scenarios for severe industrial accidents usually deal with a host of smaller contingencies that can lead to a total-failure maximum-damage event. For every small accident that can lead to total failure there is a plan that ends in the successful management of the events so that the failure either does not develop or it is stopped in an intermediate stage. The large amount of precautions to avoid total failure may make
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The Pre-Salt Prospectivity Of The Central Transylvanian Basin - A Key To The Last Un-Drilled Play In Romania ?
Authors R. Grunwald and U. SchulzO20 - 01 Summary EXPLORATION CASE HISTORIES& RISK MANAGEMENT THE PRE-SALT PROSPECTIVITY OF THE CENTRAL TRANSYLVANIAN BASIN - A KEY TO THE LAST UN-DRILLED PLAY IN ROMANIA ? - R. Grunwald U. Schulz Winterhall AG Germany New exploration efforts have been undertaken by the consortium Wintershall and Romgaz in the Southern Transylvanian Basin Block Transylvania Sud since 2001. As a result of an integrated approach a new play has been identified in the Pre-Salt besides of firming up a number of Post-Salt Leads. In addition to conventional 2D seismic focusing on the Post-Salt succession one seismic line has been recorded
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Reservoir Optimization Of The Southern License Area Of Priobskoye Field, Western Siberia, Russia
Authors T. Kruchkova, V. Savostikov, N. Kalita, H. Ruiz and E. CarvajalO20 - 02 EXPLORATION CASE HISTORIES& RISK MANAGEMENT RESERVOIR OPTIMIZATION OF THE SOUTHERN LICENSE AREA OF PRIOBSKOYE FIELD WESTERN SIBERIA RUSSIA Tatyana Kruchkova 1 Vadim Savostikov 1 Nik Kalita 2 Hector Ruiz 2 Edgar Carvajal 2 1 Sibneft Moscow Russia 2 Schlumberger Moscow Russia This paper demonstrates the usefulness of integrated geophysical geological and engineering models in improving oil recovery. Priobskoye field discovered in 1982 ranks among giant fields in terms of geological and recoverable oil reserves. The field is located in Western Siberia and consists of a northern and southern license areas (figure 1). This paper addresses development of
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African Platform - Albania Thrust Belt Relationship And Hydrocarbon Prospects Trends
Authors E. Prenjasi, S. Dhima, S. Nazaj and F. QyranaO20 - 03 EXPLORATION CASE HISTORIES& RISK MANAGEMENT AFRICAN PLATFORM - ALBANIA THRUST BELT RELATIONSHIP AND HYDROCARBON PROSPECTS TRENDS Engjell Prenjasi 1 Stavri Dhima 2 Shaqir Nazaj 1 Frederik Qyrana 3 1 Polytechnic University of Tirana Albania 2 Ministry of Industry and Energy Tirana Albania 3 National Scientific Hydrocarbon Center Fier Albania Recent exploratory works have added and improved information on tectonic setting and oil-gas-bearing perspective of onshore and offshore areas of the Western Albania. So it’s possible to make out the following main tectonic units and oil-gas prospects trends: 1. African platform with its parts pre-Apulia zone as well
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The Role Of Geophysics In The Ministry Of Environment And Water Management’S New Strategy On The Protection Of The Soil And Of The Subsoil
Authors S. Barbu and N. HeredeaO20 - 04 EXPLORATION CASE HISTORIES& RISK MANAGEMENT THE ROLE OF GEOPHYSICS IN THE MINISTRY OF ENVIRONMENT AND WATER MANAGEMENT’S NEW STRATEGY ON THE PROTECTION OF THE SOIL AND OF THE SUBSOIL Sulfina Barbu Nicolae Heredea Ministry of Environment and Water Management Bucharest Romania Provisions of the Government Programme 2005-2008 In accordance with the Government Programme 2005-2008 the Ministry of Environment and Water Management has developed a new organizatory structure within witch the specific environmental problems for soil and subsoil as well as the problems of unregenerative resources will be dealt with in an unitary framework at the level of
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The Legal Framework That Controls The Exploration Activities In Romania. Results Of The Operating Petroleum Agreements And New Opportunities
Authors M. German, N. Pandele, P. Cristian and P. AurelO20 - 05 EXPLORATION CASE HISTORIES& RISK MANAGEMENT THE LEGAL FRAMEWORK THAT CONTROLS THE EXPLORATION ACTIVITIES IN ROMANIA. RESULTS OF THE OPERATING PETROLEUM AGREEMENTS AND NEW OPPORTUNITIES National Agency For Mineral Resources Main competencies: M. German 1 N. Pandele 2 P. Cristian 2 P. Aurel 3 1 NAMR Bucharest Romania 2 Petrom Ploiesti Romania 3 Romgaz Medias Romania • concession according to the law through petroleum agreements of the exploration and exploitation rights for petroleum blocks located onshore and offshore; • granting the national transportation system and the public property of petroleum operations in the oil terminals; • issuing specific
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Risk Management For Competitive E&P
Authors P. Neculae, G. Duta, D. Caminschi, A. Sauciuc, M. Zamfirescu, D. Popescu, A. Dragomir and C. PopaEXPLORATION CASE HISTORIES& RISK MANAGEMENT O20 - 06 RISK MANAGEMENT FOR COMPETITIVE E&P P. Neculae G. Duta D. Caminschi A. Sauciuc M. Zamfirescu D. Popescu A. Dragomir C. Popa Petrom Ploiesti Romania Risk Management is a mature discipline with its own processes tools and techniques and with consensus about its main concepts and practices. Nevertheless projects still fail to meet their objectives and businesses are deprived of the benefits despite the theory that risk management should contribute success. Why is risk management failing to live up to its potential? The focus is almost entirely tactical and does not consider strategic
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Geophysical Data on Structure of the Albanides
By S. BushatiO3 - 01 REGIONAL GEOPHYSICS & GEOTECTONICS GEOPHYSICAL DATA ON STRUCTURE OF THE ALBANIDES Salvatore Bushati Academy of Sciences of Republic of Albania Tirana Albania Summary The structural analysis of the Albanides according to the geophysical surveys data is presented in the paper. The Albanides represents the assemblage of the geological structures in the territory of Albania and together with Dinarides at the North and Hellenides at their South are formed the southern branch of the Mediterranean Alpine Belt. Two major paleogeographic domains form the Albanides: the Internal Albanides in the eastern part and the External Albanides in the western
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Intramoesian Fault on Bulgarian Territory: Available Geophysical Data
Authors S. Shanov, A. Boycova and A. MitevO3 - 02 REGIONAL GEOPHYSICS & GEOTECTONICS INTRAMOESIAN FAULT ON BULGARIAN TERRITORY: AVAILABLE GEOPHYSICAL DATA Stefan Shanov Antoaneta Boycova Asen Mitev Geological Institute Bulgarian Academy of Sciences 1113 Sofia Bulgaria Introduction The territory named Dobrudja is the northeastern part of the Moesian Platform. The potentially active Intramoesian Fault crosses Dobrudja from NW to SE and it is of a length several times greater than the known active faults in Southern Bulgaria generating strong earthquakes of magnitude around 7.0 during the last century. The main aim of the emphasised research is to trigger the evaluation of the contemporary activity of the
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Rational Geophysical Strategy of Buried Active Faults Delineation and Monitoring: Russian Platform and Romanian Carpathians Examples
Authors V.G. Budanov, D. Zugravescu, C.S. Sava, L. Besutiu, V.I. Leontiev and V.B. DubovskoyO3 - 03 REGIONAL GEOPHYSICS & GEOTECTONICS RATIONAL GEOPHYSICAL STRATEGY OF BURIED ACTIVE FAULTS DELINEATION AND MONITORING: RUSSIAN PLATFORM AND ROMANIAN CARPATHIANS EXAMPLES V.G. Budanov 1 D. Zugravescu 2 C.S. Sava 3 L. Besutiu 2 V.I. Leontiev 1 V.B. Dubovskoy 1 1 Institute of Physics of the Earth of Russian Academy of Sciences Moscow Russia 2 Institute of Geodynamics “Sabba S. Stefanescu” of Romanian Academy Bucharest Romania 3 National Institute for Marine Geology and Geoecology Bucharest Romania Summary Our contribution to the problem included the transfer of modified concept of structural dynamics to the descriptions of the real geological objects
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Investigation of Distribution of Volcanic Vents in Cappadocia Using Magnetic Method
Authors A. Buyuksarac, M. Ozgu Arisoy, O. Bektas and A. AtesO3 - 04 REGIONAL GEOPHYSICS & GEOTECTONICS INVESTIGATION OF DISTRIBUTION OF VOLCANIC VENTS IN CAPPADOCIA USING MAGNETIC METHOD Aydin Buyuksarac 1 Muzaffer Ozgu Arisoy 1 Ozcan Bektas 1 Abdullah Ates 2 1 Cumhuriyet University Department of Geophysical Engineering Turkey 2 Ankara University Department of Geophysical Engineering Turkey Summary Cappadocia region presents complex geology originating from its tectonic and volcanic activity. This situation is reflected on the aeromagnetic anomaly map. Advanced techniques were applied to the aeromagnetic data to solve the complexity of Cappadocia. Reduction to the pole removed anomaly asymmetry caused by inclination angle of the geomagnetic field and locates
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Influence of Evaporites Deposits on Overthrusting Model of External Albanides Based on Seismic Data
Authors S. Dhima, I. Gjermani and S. NazajO3 - 05 REGIONAL GEOPHYSICS & GEOTECTONICS INFLUENCE OF EVAPORITES DEPOSITS ON OVERTHRUSTING MODEL OF EXTERNAL ALBANIDES BASED ON SEISMIC DATA Stavri Dhima 1 Ilia Gjermani 2 Shaqir Nazaj 3 1 Ministry of Industry and Energy Tirana Albania 2 General Petroleum Directorate Ministry of Industry and Energy Tirana Albania 3 Politechnical University of Tirana Albania Summary Study region extend in Western and Southern part of Albanian territory. Several studies are perfomed in this area as follows: -Geological and Geophysical surveys -Tectonic and structural studies -Well log analysis Above studies have evidenced not only the relationships of evaporate deposits with around
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Birth, Development and Closure of the Dacian Basin (Upper Neogene, Romania)
Authors D. Jipa and R. OlteanuO3 - 06 REGIONAL GEOPHYSICS & GEOTECTONICS BIRTH DEVELOPMENT AND CLOSURE OF THE DACIAN BASIN (UPPER NEOGENE ROMANIA) Dan Jipa Radu Olteanu National Institute for Marine Geology and Geoecology - GeoEcoMar Bucharest Romania The Dacian Basin territory extended from the foot of the Southern and Eastern Carpathians to the present-day belt of the Lower Danube River north of the Pre-Balkan space. The Dobrogean Highland limited the eastern extention of the Basin leaving room for communication with the Black Sea Depression. Dacian Basin Geographic Confinement and Significance The Dacian Basin did not exist during the Eoparatethys (Chattian-Ottnangian) this stage being characterized
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Riemannian Wavefield Extrapolation of Seismic Data
Authors J. Shragge, P. Sava, G. Shan, B. Biondi and S. FomelO4 - 01 SEISMIC ACQUISITION & PROCESSING RIEMANNIAN WAVEFIELD EXTRAPOLATION OF SEISMIC DATA 1 1 2 1 1 2 Jeffrey Shragge Paul Sava Guojian Shan Biondo Biondi Sergey Fomel 1 Stanford University Stanford CA USA 2 Bureau of Economic Geology UT Austin Austin TX USA Summary Images of Earth structure are created through seismic wavefield extrapolation which extends surface-recorded data to depth through application of a wave-equation operator. The one-way extrapolation operators are derived from the acoustic wave-equation dispersion relation and are usually defined in a Cartesian coordinate system with a vertical extrapolation axis. Riemannian wavefield extrapolation (RWE) is a
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Azimuth Moveout (AMO) for Land Data Regularization and Interpolation
Authors A. M. Popovici, S. Crawley, D. Bevc and D. NegutO4 - 02 SEISMIC ACQUISITION & PROCESSING AZIMUTH MOVEOUT (AMO) FOR LAND DATA REGULARIZATION AND INTERPOLATION Alexander Mihai Popovici 1 Sean Crawley 1 Dimitri Bevc 1 Dan Negut 2 1 3DGeo Development Incorporated Santa Clara CA California 95054 USA 2 Arcis Processing USA Summary Azimuth Moveout (AMO) is a wave-equation correct binning algorithm that accurately handles dipping geological strata and variable velocities. AMO has applications for both marine and land data though this paper focuses mainly on the application of AMO to 3-D and 2-D land surveys which have irregular and sparse geometry that often leads to spatial aliasing. AMO
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Microseismic Sounding Method; Experimental Background; Cases of Application
Authors A.V. Gorbatikov, A.V. Kalinina, J. Arnoso, A.L. Odintsov and I.V .GetmanovO4 - 03 SEISMIC ACQUISITION & PROCESSING MICROSEISMIC SOUNDING METHOD; EXPERIMENTAL BACKGROUND; CASES OF APPLICATION A.V. Gorbatikov 1 A.V. Kalinina 1 J. Arnoso 2 A.L. Odintsov 3 I.V .Getmanov 3 1 Institute of Physics of the Earth Russian Academy of Sciences Moscow Russia 2 Instituto de Astronomia y Geodesia (CISC-UCM) University of Madrid Spain 3 “ASTRAKHANGAZPROM’ SSC Ltd. Russia Summary A number of experimental results is being presented to demonstrate the perspectives of application the microseismic sounding method (MSM) for several typical geological objects including characteristic ones for oil and gas industry. MSM represents a kind of seismic prospecting utilizing
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Which Depth Imaging Method should you use? A Roadmap in the Maze of 3-D Depth Imaging
More LessO4 - 04 SEISMIC ACQUISITION & PROCESSING WHICH DEPTH IMAGING METHOD SHOULD YOU USE? A ROADMAP IN THE MAZE OF 3-D DEPTH IMAGING D. Bevc 1 B. Biondi 2 1 3DGeo Development Inc. Santa Clara CA 95054 USA 2 Stanford University Stanford CA 94305 USA Summary Today’s explorationist is confronted with a large array of three dimensional depth imaging options ranging from a variety of Kirchhoff implementations to a variety of wave-equation implementations. Historically the choice of a depth migration algorithm was simple: Kirchhoff was the only practical option. This has changed. Advances in computing and clever algorithms have made
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Land Seismic Data Analysis - A Review
By Oz YilmazO4 - 05 SEISMIC ACQUISITION & PROCESSING LAND SEISMIC DATA ANALYSIS – A REVIEW Oz Yilmaz GeoTomo LLC Houston TX USA Dr. Oz Yilmaz is an internationally renowned earth scientist. Oz received his Ph.D. in Geophysics from Stanford in 1979. During his 28-year career in the industry he has worked in acquisition processing inversion and interpretation of seismic data for Schlumberger Western Geophysical and Paradigm. For his contributions to the science of geophysical exploration Dr. Yilmaz received the Virgil Kauffman Gold Medal Award from SEG in 1991 and the Conrad Schlumberger Award from EAEG in 1992. He served SEG as
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Investigation of the Roman Defence Wall by using Multi-Electrode Resistivity System
More LessO5 - 01 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS INVESTIGATION OF THE ROMAN DEFENCE WALL BY USING MULTI-ELECTRODE RESISTIVITY SYSTEM Mehmet Emin Candansayar Ankara University Faculty of Science Geophysical Eng. Dept. 06100 Besevler-Ankara Turkey Summary I investigate a defense wall used in late Roman and early Ottoman Empire period by using multi electrode direct current resistivity system in Ankara the capital city of Turkey. I suggested a 2x2 meter area for excavation after two-dimensional inversion of pole-dipole and Schlumberger arrays data interpretation. The wall constructed in the Roman period (B.C. 300) was found in 4 meter depth. This result validated the resistivity
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Recent Applicatins of Archeological Prospection in Greece
Authors G. N. Tsokas, P. I. Tsourlos, G. Vargemezis and A. StampolidisO5 - 02 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS RECENT APPLICATIONS OF ARCHEOLOGICAL PROSPECTION IN GREECE Gregory N. Tsokas Panagiotis I. Tsourlos George Vargemezis Alexandros Stampolidis Laboratory of Exploration Geophysics Dept. of Geophysics School of Geology University of Thessaloniki 54006 Thessaloniki Greece Introduction A variety of archeological sites in Greece have been explored by geophysical means the last thirty years. The present paper comprises a summary of the most significant results obtained from this kind of geophysical exploration the past few years. All the operations to be referenced were carried out by the Laboratory of Exploration Geophysics of the Aristotle University of
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MASW Measurements for Seismic Site Effect Evaluation
Authors L. Hermann, A.I. Kanli, Zs. Prónay, A. Pinar, P. Tildy and E. TörösO5 - 03 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS MASW MEASUREMENTS FOR SEISMIC SITE EFFECT EVALUATION 1 2 1 2 1 1 L. Hermann A.I. Kanlı Zs. Prónay A. Pınar P. Tildy E. Törös 1 Eötvös Loránd Geophysical Institute Department of Engineering Geophysics Budapest Hungary 2 Istanbul University Engineering Faculty Department of Geophysical Engineering 34320 Avcilar Istanbul Turkey Introduction It is generally considered that in Hungary there is no relevant seismic hazard. However several moderate size historical earthquakes (between M=5 and M=6) occured in Hungary in the last centuries (http://fir.seismology.hu/georisk/Recent/Historical.html) hence the seismic risk must not be ignored — mainly at densely
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Local Site Effects on Structural Damages in a Residence of Gölcük Town during the August 17, 1999 Kocaeli Earthquake: A Case Study
Authors M. Asçi, F. Ozçep, N. Alpaslan, T. Yas, T. Serkan Irmak, E. Ulutas, I. Talih Güven, B. Tunç, T. Cetinol, D. Caka, S. Tunç, S. Baris and M. F. ÖzerO5 - 04 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS LOCAL SİTE EFFECTS ON STRUCTURAL DAMAGES IN A RESİDENCE OF GÖLCÜK TOWN DURING THE AUGUST 17 1999 KOCAELİ EARTQUAKE : A CASE STUDY Metin Aşçi 1 Ferhat Ozçep 2 Nuray Alpaslan 1 Turker Yas 1 Tahir Serkan Irmak 1 Ergin Ulutaş 1 Ismail Talih Güven 1 Berna Tunç 1 Taciser Cetinol 1 Deniz Caka 1 Süleyman Tunç 1 Serif Bariş 1 Mithat Firat Özer 1 1 Kocaeli University Earth and Space Sciences Research Center Turkey 2 İstanbul University Earth and Space Sciences Research Center Turkey Summary Many people believe that design and construction
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On the Use of Microtremor Data for Microzonation in Buyucekmece (Istanbul), Turkey
Authors S. Karabulut and I. OsmansahinO5 - 05 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS ON THE USE OF MICROTREMOR DATA FOR MICROZONATION IN BUYUCEKMECE (ISTANBUL) TURKEY Savas Karabulut Ilhan Osmansahin Istanbul University Faculty of Engineering Department of Geophysical Engineering 34320 Avcilar Istanbul Turkey Summary The recent August 17 (Izmit) and November 12 1999 (Duzce) earthquakes have clearly shown that near surface geological structure and topographical conditions play an important role in the level of ground shaking. In mitigation first of all information on soft soil response to earthquakes has prime importance. The mapping of dynamic properties of site can assist in mitigation in earthquake prone areas. Microtremor
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A Quality Classification of Building Stones from P-Wave Velocity and its Application to Stone Cutting with Gang Saw
Authors S. Kahraman and U. UlkerO5 - 06 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS A QUALITY CLASSIFICATION OF BUILDING STONES FROM P-WAVE VELOCITY AND ITS APPLICATION TO STONE CUTTING WITH GANG SAW S. Kahraman 1 U. Ulker 2 1 University of Nigde Geological Engineering Department Nigde Turkey 2 Kamer Mermer Organize Sanayi 16. Cad. No. 20 Kayseri Turkey Summary Seismic techniques are increasingly being used in in various fields such as mining geotechnical civil and underground engineering since they are non-destructive and easy to apply. These techniques are usually employed both in site and laboratory to characterize and determine the dynamic properties of rocks. There are a
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The Contribution of Geological - Geophysical Methods to Determine the Water-Bearing Capacity of the Neogene Deposits of the Ballsh Syncline
More LessO5 - 07 ENVIRONMENTAL ENGINEERING & ARCHAEO-GEOPHYSICS THE CONTRIBUTION OF GEOLOGICAL - GEOPHYSICAL METHODS TO DETERMINE THE WATER-BEARING CAPACITY OF THE NEOGENE DEPOSITS OF THE BALLSH SYNCLINE Mihail Gjoka 1 Xhemil Buzi 2 Majlinda Mece 1 Arqile Piperi 3 Xhuljeta Hila 1 1 National Scientific Hydrocarbon Centre Fier Albania 2 Albpetrol Sh.A. Patos/Fier Albania 3 Servcom.SH.A Fier Albania Summary The paper treats the water bearing of lithotamnic sandstone and limestone of Langhian- Serravalian age in Neogenic syncline of Ballsh mainly on western part of it. The most of developing wells drilled in Ballsh area have provided significant data and evidenced
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Relationships between Tectonic Elements and Crustal Reflectivity - A Case from Moesian Platform
Authors J. Matresu, V. Raileanu and C. DinuO6 - 01 REGIONAL GEOPHYSICS & GEOTECTONICS RELATIONSHIPS BETWEEN TECTONIC ELEMENTS AND CRUSTAL REFLECTIVITY - A CASE FROM MOESIAN PLATFORM 1 2 3 Justin Matresu Victor Raileanu Corneliu Dinu 1 Petrom SA Romania 2 National Institute for Earth Physics Bucharest Romania 3 Bucharest University Faculty of Geology and Geophysics Romania During the Paleozoic time the western part of the Moesian platform underwent a series of major tectonic events. Relicts of their effect are preserved in the present structures displayed on the reflection seismic sections. The structural patterns of these tectonic events are visible not only over the sedimentary cover pile
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Considerations on the SE Extent of the Tornquist - Teisseyre Zone on the Romanian Territory
Authors L. Besutiu, L. Atanasiu, A. Damian, M. Horomnea and L. ZlagneanO6 - 02 REGIONAL GEOPHYSICS & GEOTECTONICS CONSIDERATIONS ON THE SE EXTENT OF THE TORNQUIST-TEISSEYRE ZONE ON THE ROMANIAN TERRITORY L. Besutiu L. Atanasiu A. Damian M. Horomnea L. Zlagnean Institute of Geodynamics of the Romanian Academy Bucharest Romania Introduction The Tornquist-Teisseyre Zone (TTZ) has been subject to the TESZ project of EUROPROBE program and many papers were written on topic. However systematic research basically stops at the northern Romanian border. Pharaoh (1999) put a clear question mark on its Romanian segment thus expressing the still open questions concerning its uncertain track in the area. The present paper mainly focuses
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Seismic Evidence for Salt - and Volcanism-Related Tectonics in the Eastern Transylvanian Basin
Authors A. Szakács and C. KrézsekO6 - 03 REGIONAL GEOPHYSICS & GEOTECTONICS SEISMIC EVIDENCE FOR SALT- AND VOLCANISM- RELATED TECTONICS IN THE EASTERN TRANSYLVANIAN BASIN Alexandru Szakács 1 Csaba Krézsek 2 1 Institute of Geodynamics Romanian Academy Bucharest and Sapientia EMTE University Cluj-Napoca Romania 2 Romgaz Medias Romania and Vrije University Amsterdam The Netherlands Summary The recently obtained seismic data provide a new perspective on development of the Eastern Transylvanian Basin and its relation to salt tectonics and volcanic processes. The Transylvanian Basin is an Upper Cretaceous to Miocene episutural basin developed on the hinterland of the Carpathian fold and thrust belt. Widespread salt deposits
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Crustal Structure and Phanerozoic (Pre-Black Sea Opening) Orogenic Processes on and Near the Southern Margin of Baltica: A Europrobe Overview
More LessO6 - 04 REGIONAL GEOPHYSICS & GEOTECTONICS CRUSTAL STRUCTURE AND PHANEROZOIC (PRE-BLACK SEA OPENING) OROGENIC PROCESSES ON AND NEAR THE SOUTHERN MARGIN OF BALTICA: A EUROPROBE OVERVIEW Randell Stephenson Netherlands Research Centre for Integrated Solid Earth Sciences Vrije Universiteit Faculty of Earth and Life Sciences De Boelelaan 1085 1081 HV Amsterdam The Netherlands Randell Stephenson works at the Vrije Universiteit Amsterdam attached to the Netherlands Research Centre for Integrated Solid Earth Sciences (ISES). His main area of interest in the last decade has been the geology and tectonic history of south-eastern Europe in particular the sedimentary basins overlying the southern
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Application of Seismic Trace Interpolation to a Land Seismic Reflection Dataset
Authors I. Panea, G. Drijkoningen, R. Stephenson and V. MocanuO7 - 01 SEISMIC ACQUISITION & PROCESSING APPLICATION OF SEISMIC TRACE INTERPOLATION TO A LAND SEISMIC REFLECTION DATASET 1 2 3 1 I.Panea G.G.Drijkoningen R. Stephenson V. Mocanu 1 Bucharest University Romania 2 Delft University of Technology The Netherlands 3 Vrije Universiteit The Netherlands Summary Trace interpolation was proposed in order to recover missing data and convert spatially aliased data to un-aliased data; it is known that spatial aliasing can affect the performance of filtering and migration techniques. Several methods have been proposed and applied with good results in common shot/receiver/offset domain. Gülünay and Chambers (1997) proposed a trace interpolation
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Wave-Equation Depth Imaging in an Integrated Regional Framework
Authors A. M. Popovici, S. Crawley, F. Yang, A. Pieprzak, M. Davidson, M. Leander and K. MohnO7 - 02 SEISMIC ACQUISITION & PROCESSING WAVE-EQUATION DEPTH IMAGING IN AN INTEGRATED REGIONAL FRAMEWORK Alexander Mihai Popovici 1 Sean Crawley 1 Fusheng Yang 1 Andy Pieprzak 1 Michael Davidson 2 Mark Leander 2 Ken Mohn 2 1 3DGeo Development Inc. Santa Clara CA 95054 USA 2 Fugro Multi Client Services USA Summary Regional geologic context is an important factor in the effective assessment of exploration risk in frontier areas such as the ultra-deep waters of the Gulf of Mexico. The use of regional frameworks has been reported during the prospect evaluation and discovery phases of several large deepwater fields
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Application of High Resolution Seismic Surveys in Shallow Fresh Water
Authors L. Baradello, F. Fanzutti and D. Nieto YabarO7 - 03 SEISMIC ACQUISITION & PROCESSING APPLICATION OF HIGH RESOLUTION SEISMIC SURVEYS IN SHALLOW FRESH WATER L. Baradello F. Fanzutti D. Nieto Yabar Istituto di Oceanografia e di Geofisica Sperimentale – OGS Sgonico (TS) Italy Introduction In the last years the “Istituto Nazionale di Geofisica Sperimentale - OGS” has collaborated in several projects for collecting high resolution seismic (HRS) data. The most important projects were CARG (a research to produce the geological map of the Venice Lagoon and the surrounding catchment) and Oloambient (the study of structures of alpine lakes in north Italy). The goals of the HRS have
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Seismic Data Acquisition in Urban and Industrial Zones
Authors Slobodan Ž.Stanic, K.Ž. Djordjevic, Ž. M. Pavlovic and K. V. NegovanO7 - 04 Summary SEISMIC ACQUISITION & PROCESSING SEISMIC DATA ACQUISITION IN URBAN AND INDUSTRIAL ZONES Slobodan Ž.Stanić 1 Katarina Ž. Djordjević Živko M. Pavlović 3 Kosta V. Negovan 4 1 NIS-Naftagas Geophysical Institute 11080 Zemun Batajnički put 18 Serbia and Montenegro 2 Genex Beograd Serbia and Montenegro 3 PK »Dragan Marković« Obrenovac Serbia and Montenegro 4 NIS-Oil Refinery Pančevo Pančevo Serbia and Montenegro Nowadays seismic methods are the most often used methods of geophysical exploration. Just opposite to the past they are now widely used in urban environment and industrial zones. In order to avoid complicated situations during seismic
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Seismic Data Contribution in the Ionian Zone Limestone Structure Detection under Kruja Zone Orogen in Tirana Area
Authors Vilson Silo, D. Yzeiraj, G. Merkaj and S. SiloO7 - 05 SEISMIC ACQUISITION & PROCESSING SEISMIC DATA CONTRIBUTION IN THE IONIAN ZONE LIMESTONE STRUCTURE DETECTION UNDER KRUJA ZONE OROGEN IN TIRANA AREA Vilson Silo Daut Yzeiraj Gentiana Merkaj Shpresa Silo National Scientific Hydrocarbon Centre Fier Albania Introduction The region under study includes the half of the northern area of Kruja tectonic zone partly the Ionian one and the South Adriatic basin. It has continuously been a problematic area as related to tectonic-facial zones particularly to the possibility or no of the continuation of the Ionian zone north of Dumrea salt diapir. The strong overthrust of Kruja zone structures
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Which Multiple Remoal Method is better? A Comparison between Parabolic Radon Transform and F-K Dip Filtering
By Navid AminiO7 - 06 SEISMIC ACQUISITION & PROCESSING WHICH MULTIPLE REMOVAL METHOD IS BETTER ? A COMPARISON BETWEEN PARABOLIC RADON TRANSFORM AND F-K DIP FILTERING Navid Amini Institute of Geophysics of Tehran University Iran Summary Multiples suppression is a partially solved problem and there is not a precise solution for it. Although stacking is a good tool for multiples suppression but some times we should suppress them before stacking. Generally pre-stack multiples suppression methods work on the basis of moveout difference between primaries and multiples. Many authors investigated methods for filtering of this type of coherent noises using this characteristic. Parabolic
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The Airborne Geomagnetic Map of Romania: A New Look
Authors V. Sprinceana and L. BesutiuO8 - 01 GRAVITY MAGNETICS & GEOMAGNETISM THE AIRBORNE GEOMAGNETIC MAP OF ROMANIA: A NEW LOOK Viorel Sprinceana 1 Lucian Besutiu 2 1 Prospectiuni S.A. Bucharest Romania 2 Romanian Academy – Institute of Geodynamics Bucharest Romania The regional airborne geomagnetic survey of the Romanian territory (Cristescu et al. 1962-1968) was accomplished by Prospectiuni S.A. Company during seven yearly field campaigns (figure 1). The achievement of this project marked a major step in deciphering major structuraltectonic peculiarities of the Romanian territory but also may serve as a guide in planing further prospecting activities for ore deposits. Despite its invaluable virtues for
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The Use of Magnetic Data in Mapping Cretaceous Strata of the Alberta Foothills, Canada
Authors C. I. Abaco and D. C. LawtonO8 - 02 GRAVITY MAGNETICS & GEOMAGNETISM THE USE OF MAGNETIC DATA IN MAPPING CRETACEOUS STRATA OF THE ALBERTA FOOTHILLS CANADA Christian I. Abaco 1 Don C. Lawton 2 1 EnCana Oil & Gas Calgary Alberta Canada 2 The University of Calgary Department of Geology and Geophysics Calgary Alberta Canada Summary Interpretation of magnetic data from the south-central Alberta Foothills shows a remarkable correlation between the lithostratigraphic units and the magnetic anomalies. Most of the residual magnetic anomalies are caused by variations in magnetization within Upper Cretaceous strata (Lower and Upper Brazeau and Lower Coalspur) and appear to increase in
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Complex Attributes Analysis of the Bouguer Gravity of Greece
Authors H. Reci, G.N. Tsokas, C. Papazachos, A. Stampolidis and D. PanagiotopoulosO8 - 03 GRAVITY MAGNETICS & GEOMAGNETISM COMPLEX ATTRIBUTES ANALYSIS OF THE BOUGUER GRAVITY OF GREECE H. Reci G.N. Tsokas C. Papazachos A. Stampolidis D. Panagiotopoulos Exploration Geophysics Laboratory Dept. of Geophysics School of Geology Aristotle University of Thessaloniki 54124 Thessaloniki Greece Summary The complex attributes analysis is frequently used for extracting the dimensional parameters of the buried structures and the subsurface susceptibility and density contrasts distributions. In this paper the complex attributes analysis of the Bouguer gravity field in the territory of Greece is presented. The area of Greece has a complex tectonic history and fault systems who are
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Block Rotations and Curie Point Depth of the Marmara Sea, Nw Turkey Inferred from Aeromagnetic Data
More LessO8 - 04 Summary GRAVITY MAGNETICS & GEOMAGNETISM BLOCK ROTATIONS AND CURIE POINT DEPTH OF THE MARMARA SEA NW TURKEY INFERRED FROM AEROMAGNETIC DATA Abdullah Ates 1 Funda Bilim 2 1 Ankara University Department of Geophysical Engineering Turkey 2 Cumhuriyet University Department of Geophysical Engineering Turkey Aeromagnetic anomalies of the Marmara Sea NW Turkey display interesting features which were not resolved in detail. In general these magnetic bodies can be classified in two types that are deep seated and fault related. The magnetic anomalies of three anomalous regions demonstrate anticlockwise block rotations in the Cinarcik and Western Basins. In this
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