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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
41 - 60 of 198 results
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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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