- Home
- Conferences
- Conference Proceedings
- Conferences
14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects
- Conference date: May 11-14, 2015
- Location: Kiev, Ukraine
- Published: 11 May 2015
41 - 60 of 89 results
-
-
Exploration and evaluation criterions to estimate prospects of exploration, appraisal and production of unconventional HC resources
By A. KryshtalSummaryCommon and distinctive characteristics of the conventional and unconventional HC resources are shown, definitions in English and Ukrainian terminology are synchronized. Main prospective lithology-stratigraphic units of Dnepro-Donetsk depression for exploration of unconventional types of HC resources are identified. Structural and tectonic conditions of development of HC of different types in different reservoirs are defined. The possibility of synergetic geological circumstances of the development of different types of HC with potential resources estimated to exceed that of conventional ones.
Major exploration and evaluation criterions and evidences of main types of unconventional HC resources are defined. Main objectives are determined to solve the problems of development of the significant potential of unconventional HC resources of Ukraine.
-
-
-
Indicators local heterogeneity assessment of the gravity field in solution tectonic zoning tasks
Authors O. Dziuba, M. Zhukov and M. RachovaSummaryAnalysis of the tectonic structure, genesis structures and their composition, nature changes the gravitational field of the north-eastern part of the Dnieper-Donets depression are provided. Methods of processing gravimetric data for solving tectonic zoning are done and automated system for calculation of physical and statistical attributes (standard deviation, absolute deviation, coefficient of variation, anisotropy, Abbe criterion, the horizontal gradient) is created. Algorithm of the assessment indicators local heterogeneity of the gravity field is developed. Since classical model of Gaussian distribution is appropriated to describe the distribution of the gravitational field inhomogeneity parameters over different geological structures, proposed technique to study changes in the gravitational field inhomogeneity parameters by applying universal model of normal distribution.
Distribution patterns of heterogeneity parameters of the gravitational field of the study area (Shebelinka, Starovirivska, Ryabuhinska) are analyzed. Indicators local heterogeneity assessment of the gravity field decision-making criteria to create geostructures classification system for solving tectonic zoning is calculated.
-
-
-
Modeling of the volcanic structures neotectonic evolution of Vyhorlat-Hutyn ridge (The Ukrainian Carpathians)
Authors T. Andriiets, O. Ivanik and S. MuravkoSummaryThe geomorphological and tectonic evolution, spatial and temporal distribution of neotectonic movement amplitudes during after volcanic stages, the determination of tectonic activity are still the main problems of Carpathian geology. In the paper the results of the structure-morphometric analysis of Kuchavskyi, Syniak, Dekhmaniv volcanos have been shown. The structure-morphometric models, analytic operations with geodatabase design and spatial modeling have executed in GIS. The detailed analysis of relief evolution and tectonic movements has carried out. The uniform distribution of uplift amplitudes for Kuchavskyi volcano, high differentiated – for Syniak and differentiated – for Dekhmaniv volcano have been determined. The differences of tectonic evolution between Grabowsk volcano-domical structure and caldera of volcano Syniak, between interior and middle zones of volcano Dekhmaniv have been determined. Tectonically active local structures have been found. The amplitudes of the tectonic movements, generated as a result of Grabivska structure and Dekhmaniv volcano intrusive bodies uplift have been defined. The process of volcanic centers destruction has been determined.
-
-
-
Spatial prediction of gas-generating sequences based on evaluation of vitrinite reflectivity in Dnieper-Donets Depression
Authors Y. Zelenko and O. KarpenkoSummaryThe issue is to identify the most promising rock mass, their lateral and spatial distribution, explore and highlight the main criteria for mature oil-and gas-generating fat-based distributions of reflectivity vitrinite (R0).
-
-
-
Stable solutions of inverse problems of gravity-magnetometry on crystalline shields
Authors P. Minenko, R. Minenko and Y. MechnikovSummarySince almost half of the territory of Ukraine is on the crystalline shield with small depths, the primary objectives of geophysics is to search them all ore deposits. Solving these problems is impossible without detailed geophysical gravimetric studies. Most geological arrays and anomalous bodies strongly heterogeneous physical properties. It is therefore necessary to have a sustainable methods for solving inverse linear problems gravimagnitometrii to determine the model blocks in secondary physical properties. For reliable extraction of gravity and magnetic data of geological information needed sustainable practices conversion software maps the field in the multilayer vertical sections and maps of the distribution of physical properties at low volumes a priori data. Especially when a large error field. To do this, use the iterative optimization methods that are filtered at each step, any changes in the physical properties of the block model and clarify important details of the anomalous bodies. As a result of experimental studies found that iterative correction of the first order gives the fuzzy solution. Then it was suggested that the second-and third-order will be able to collect more concentrated on the field map in the process of technological residual solutions. On theoretical examples succeeded. But additionally had to align the initial conditions of the second layer blocks. The proposed method has been tested on real fields. In particular, the magnetic field map on Ukrainian Crystalline Shield. Solution of the inverse problem for the field by simple iteration gave very poor results. However, with the use of iterative refinement of amendments the inverse result was closer to reality.
-
-
-
The changes of hydrogeological conditions of the territory of the Government House in Kiev under the influence of natural and anthropogenic factors using GIS technology
By O. LiubchykSummaryHydrogeological conditions of the slope at the right bank of the Dnieper at the street of Sadova in Kyiv have been studied. Hydrogeological conditions of the area by natural and anthropogenic factors have been analyzed.
-
-
-
Vrancea Earthquakes and seismic boundaries
Authors A. Kendzera, A. Ostrovnoy and T. TsvetkovaSummaryThe paper deals with seismic data of the strongest earthquakes Vrancea zone (M≥5) for the period from 2000 to 2014. presented in the ISC bulletin and Harvard catalog of earthquakes. Goal of the work was to determine the quantity changes of earthquakes and their magnitude.
-
-
-
Principles and methods of the regional landslide hazard assessment based on analysis of the rock mass stress-strain state
By O. IvanikSummaryRegional landslide hazard prediction and assessment of the slopes stability is carried out by the different methods and approaches. It takes into account the different geological, geomorphological and meteorological factors of the landslide formation. The stress-strain state of the rock mass is one of the important criteria for evaluating of the slope stability. An example of the stress-strain state determining within the landslide slopes has been proposed. The geological structure and physics-mechanical properties of rocks defined the formalization of calculations. Examples of calculation of the stress-strain state of the slope with the active landslide has been demonstrated. It is situated in village Krasnyk in Ivano-Frankivsk region (the Ukrainian Carpathians). The distribution of the stresses in the different parts of the slope depending on the geological structure and deposits water saturation has been showed. Taking into account the slope parameters and geological features the proposed method is the instrument of the landslide risk assessment and aims towards the identification of potential landslide impact.
-
-
-
Principles and methods of the regional landslide hazard assessment based on analysis of the rock mass stress-strain state
By O. IvanikSummaryRegional landslide hazard prediction and assessment of the slopes stability is carried out by the different methods and approaches. It takes into account the different geological, geomorphological and meteorological factors of the landslide formation. The stress-strain state of the rock mass is one of the important criteria for evaluating of the slope stability. An example of the stress-strain state determining within the landslide slopes has been proposed. The geological structure and physics-mechanical properties of rocks defined the formalization of calculations. Examples of calculation of the stress-strain state of the slope with the active landslide has been demonstrated. It is situated in village Krasnyk in Ivano-Frankivsk region (the Ukrainian Carpathians). The distribution of the stresses in the different parts of the slope depending on the geological structure and deposits water saturation has been showed. Taking into account the slope parameters and geological features the proposed method is the instrument of the landslide risk assessment and aims towards the identification of potential landslide impact.
-
-
-
Geophysical complex for prospecting of alluvial gold deposits in the Magadan region
Authors L. Muravyev, V. Ternovskiy and I. KhasanovSummaryGeophysics is a cheaper alternative to prospective drilling and used in two main areas: the study of the geological structure of the gold-bearing area covered by unconsolidated sediments and in the study of unconsolidated sediments and forms the buried bedrock relief. To solve the above problems a complex of field geophysical studies on the alluvial deposits of the Central Kolyma areas is performed. Geophysical complex included ground-penetrating radar (GPR) sensing, electric profiling, electric sounding and micromagnetometric survey. Experimental geophysical surveys were carried out at several sites in the Magadan region, Russia, where industrial extraction of alluvial gold is planned. Comparison spent on drilling profiles allowed us to link areas of high gold content with confident observed local positive anomalies of the magnetic field from 5 to 25 nT and increased to 5 nT/m vertical gradients of magnetic field. By these attributes became possible to determine the gold-bearing alluvial deposit position in plan. Developed geophysical complex may be recommended before setting specific polygon boundaries placer mining.
-
-
-
Geomagnetic field value calculation in Gauss-Kruger projection associated coordinate system
Authors L. Muravyev and D. ByzovSummaryModern high-sensitive magnetometers that widely used now in geophysical investigations mainly measure absolute value of full vector of the geomagnetic field. It is the sum of a constant Earth’s magnetic field, the field variations and anomalous field, which is the subject of study. For the geomagnetic field mapping and the correct interpretation of the survey results, it is necessary to calculate the anomalous field. Reference value of the Earth's magnetic field at each point is assumed to be equal to the partial sum of the spherical functions series in the geocentric coordinate system. In computer modelling programs object’s coordinates conveniently represented in the generally accepted rectangular coordinates system, in Russia it is the Gauss-Kruger projection, abroad - Universal Transverse Mercator (UTM). There is a problem of the proper calculation of the Earth’s main magnetic field components in Cartesian coordinates in a given projection such as Gauss-Kruger. The initial data are the survey points coordinates that are determined in different reference ellipsoids, for example, in Krasovsky ellipsoid. We have analyzed and developed an algorithm and a computing program in MATLAB for solving this problem.
-
-
-
Assessment of the corrosion processes impacton the pipeline natural-technical systems by the electrical methods
More LessSummaryPhysical, physics-chemical and chemical types of influence are defined as a result of the impact of geological environment on the pipeline system. Corrosion is significant physical and chemical process that affect on the functioning of the pipeline transporting systems. Successful protection of pipeline systems may be effected at timely detection of corrosion damage, determining of its size and choice of protective measures. Geophysical investigations are the most important among the various methods that used to identify areas of corrosion. Electrical geophysical investigations are most informative among the optimal methods to determine the corrosion activity of soils. Electrical methods, such as vertical electrical sounding, symmetrical electrical profiling, gradient potential method and self potential method were used to identify possible areas of corrosion on the underground pipeline of filling station «Kiev-4». The low apparent resistivity and high negative spontaneous potential values are indicated that the soil is very corrosive and there is the possibility of the pipeline failure in the future. Electrical geophysical investigations along buried pipelines should be undertaken for the early detection and prevention of pipeline failure with its negative environmental and economic consequences.
-
-
-
Spatial distribution of hypocentres of earthquakes of Cremea-Black sea region
Authors V. Burmin and L. ShumlianskaSummaryOn the basis of a new approach to the determination of the position of earthquake hypocenters the coordinates of all events for which data are presented in the bulletins of the Crimean-Black Sea region for period from 1970 to 2012 years were defined. Following results were obtained: first, the majority of earthquake hypocenters lie deeper 12 km, which corresponds to 12 kilometer border under mountainous part of the Crimea and almost no hypocenters, which go to the surface. Second, the distribution of earthquake hypocenters is close to the conical shape with the apex near Yalta-Alushta and earthquake sources go to depths of 300 km. Such distribution changes a view of geodynamic picture of the region significantly.
-
-
-
Automated system “KERN-DP” of treatment and analysis of rocks anisotropy ultrasound measuring results
Authors Y. Onanko, G. Prodayvoda, A. Onanko, O. Shabatura and R. HomenkoSummaryThe automated system “KERN-DP” of the numerical analysis of anisotropy parameters measurings of ultrasound velocities are created, which provide the account of influence texture structure of rocks and their ordering. The automated system of ultrasound measuring of anisotropy parameters data of velocities of elastic longitudinal, "rapid” and "slow" transversal waves are tested. The integral coefficient of elastic anisotropy and polarization corner – the deviation of elastic displacements vector from the wave normal direction - are the most sensible characteristics of rock anisotropy and testify to the heterogeneous deformation ε at hydrostatic pressure P of rock.
-
-
-
Informative study electrical properties of rocks in an inert medium
Authors M. Kravchuck and V. KorchinSummaryDescription of hardware and methodical system for the study of the electrical parameters of rocks at temperatures up to 1200°С in environments with different oxygen content. Shows the difference nature of the changes of temperature and frequency dependence of the electrical resistivity and dielectric constant in inert and oxidizing environments.
-
-
-
Model truncated distribution hydrochemical data in the presence of measurements, which was lower threshold of measuring device
More LessSummaryThe object of the study was modeling distributions of trace elements in natural waters based on the truncated normal and lognormal distribution. The use of these models to handle hydrochemical data helped to solve metrological problem associated with insufficient sensitivity of measuring device. Proved that the truncated distribution models gives accurate estimates of numerical characteristics of distributions as a result integral characteristics of the ecological state of water bodies are more accurate. The method can be used to solve such problems in the study of other geological objects. The software module allows make all the necessary calculations in automatic mode.
-
-
-
Pleistocene magnetostratygraphy and the Matuyama-Brunhes boundary in the loess-palaeosol sequence of Ukraine
More LessSummaryPosition of Matuyama-Brunhes boundary in different sections of the loess-soil formation in Ukraine is located in the different stratigraphic horizons which causes a lot of discussion. Loess-palaeosol sequences from the western and southern parts of Ukraine were paleomagnetically studied. The position of the Matuyama-Brunhes boundary was found in the sequence at Roxolany (on Dniester estuary) at a depth of 46.6 m between Martonosha and Lubny soil horizons. It is not consistent with the results which identified this boundary at a depth of 34 m in loesses above the level of РК7. It stresses attention on the problems of loess/paleosol magnetism and for ambiguous interpretation of paleomagnetic data.
-
-
-
Determination of the intensity of seismic influence on the construction site of apartment buildings
By T. KomarSummaryAs a result of geophysical research the data of P and S waves velocity were obtained, determined the density of soil and groundwater level. Based on this information the increment of seismic intensity was calculated, which is due to specific soil conditions.
-
-
-
Methods of development of geographic information systems and spatial databases in geology
By A. KarpenkoSummaryWeb application is being developed for increasing quality and efectivity of work with spatial geological data. This application gives possibility to work with geological information in convenient way and to easier manipulate and proccess spatial data.
-
-
-
On the seismic activity of tectonic structures of Ukrainian Carpathians lithosphere
Authors A. Nazarevych and L. NazarevychSummaryIn the paper the use of results of refinement of coordinates and depths of local earthquakes in the Carpathian region of Ukraine for studies of seismic activity of tectonic structures of the regions lithosphere are presented. Seismic activity of some subsurface thrusts and folds and underthrusts tectonic structures in Folded Carpathians and Precarpathians is traced. The activity of cross subvertical and inclined (Oash and Tereblya) deep faults in the Transcarpathian trough is studied. Specific deep-spatial relationships between the local seismic activity and zones of increased conductivity in the crust is found, these last form the famous Carpathian conductivity anomaly. Probable mechanisms of genetic relationship of detected features of distribution of seismicity with regional geodynamic processes are briefly analysed.
-