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18th International Conference on Geoinformatics - Theoretical and Applied Aspects
- Conference date: May 13-16, 2019
- Location: Kyiv, Ukraine
- Published: 15 May 2019
1 - 20 of 142 results
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Environmental security management of geosystems
Authors O. Trofymchuk, V. Okhariev and V. TrysnyukSummaryThe spatiotemporal methods for the regional environmental monitoring system are considered. The advantages of creating system of integrated environmental monitoring based on the synthesis of on-ground measurements and remote sensing data are presented. An example of remote sensing technologies using in of natural resource management is displayed.
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Modeling of filtration processes in vicinity of gas production well
By M.V. LubkovSummaryOn the base of combined finite element - difference method, we carried out computer modeling of filtration processes in vicinity of gas production well. According to obtained data analysis, the filtration process near gas production well mainly depends on gas permeability distribution, as close zone of well acting (Ra < 500 m) so remote zone acting (Ra > 500 m). At that, gas permeability distribution in remote zone of well acting more influences on filtration processes near gas producing well than gas permeability distribution in close zone. At the same time, other important filtration parameters: gas viscosity and porosity of gas reservoir little influence directly on filtration process intensity near gas production well. Another hand, they can influence on the intensity filtration process via direct acting on the gas permeability coefficient. If gas penetration in the reservoir boundaries is small enough, so for supporting quite high gas pressure in vicinit y of gas producing well it is necessary using of gas pumping wells.
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Modeling of oil filtration processes near production well
Authors M.V. Lubkov and O.O. ZacharchukSummaryOn the base of combined finite element -difference method, we carried out computer modeling of the oil filtration processes in the vicinity of oil production well. According to obtained results, intensity of filtration process near the acting oil production well mainly depend on oil phase permeability, as in close zone (Ra < 5m) so remote zone (Ra > 5m) of well action. At that, influence of oil permeability in remote zone more effective than influence in close zone of production well action. The oil viscosity and oil reservoir porosity parameters in close and remote zones of the well action have little direct effect on filtration process near the acting well. However, these parameters can influence on the filtration process via acting on the oil phase permeability. Analysis of the pumping well influence on the filtration process near oil production well in different practical cases shows that for stable supporting quite high pressure in vicinity of oil production well at the low oil phase permeability it is necessary using of pumping well.
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Studying the deep structure of kimberlite pipes by the results of remote sensing data frequency-resonance processing
Authors N. A. Yakymchuk, S. P. Levashov and I. N. KorchaginSummaryThe results of experimental application of the technology of remote sensing data (satellite images) frequency-resonance processing and interpretation with the aim of studying the internal structure of diamond-bearing kimberlite pipes are analyzed. The experiments were carried out at the locations of the well-known kimberlite pipes Udachnaya, Mir (Yakutia, Russia), Letseng-La-Terae (Kingdom of Lesotho), Diavik (Canada), and also in the area of the Klyuchevskaya volcano group in Kamchatka. By the vertical scanning of the cross-section in the central parts of the pipes the depths of the kimberlites roots and the intervals of anomalous responses (signals) at the resonant frequencies of diamonds fixation have been determined. Experimental studies have shown that: a) the frequency-resonance method of remote sensing data processing and interpreting can be used for operative reconnaissance surveys of large blocks and local areas in remote regions; b) the active use of mobile and direct-prospecting methods during the practical problems solving will help to speed up the exploration process for ore and combustible minerals.
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New evidence of amber endogenous genesis
Authors N. A. Yakymchuk, S. P. Levashov and I. N. KorchaginSummaryThe results of experimental studies using the technology of frequency-resonance processing of satellite images within the amber mining sites in the Kaliningrad (Russia) and Rovno (Ukraine) regions are analyzed. Within the surveyed areas, vertical channels of migration of fluids and mineral matter were found, the roots of which were recorded at a depth of 470 km. The presence of only sedimentary groups of rocks was established in the contours of the channels; responses from igneous and metamorphic rocks were not recorded. Vertical scanning signals at the resonant frequencies of amber were recorded from depths of 1–2 m to 57 km. Signals at the resonant frequencies of amber, oil, condensate, gas, and coal were also recorded from the surface. The results of experimental studies conducted on local sites for the extraction of amber can be considered as such, which testifies in favor of deep (abiogenic) synthesis of this mineral in the process of hydrogen degassing of the Earth. Direct search frequency-resonance method of processing satellite images can be used to search for amber.
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Geophysical researches for the hydrocarbon accumulations searching in Ukrainian marine Antarctic expedition of 2018
Authors N. A. Yakymchuk, I. N. Korchagin, V. G. Bakhmutov and V. D. SolovjevSummaryThe results of geophysical research in the Ukrainian Marine Antarctic Expedition of 2008 from the ship on the route Cape Town Port (South Africa) -Falkland Islands -King George Island, as well as on the polygon in the area of the Antarctic Peninsula are analyzed. The studies were conducted using mobile and direct-prospecting geophysical methods and were aimed at studying the deep structure of the oceanic lithosphere along the route of the vessel, detecting possible accumulations of hydrocarbons and other minerals. Modified methods of frequency-resonance processing and decoding of satellite images and photographs, vertical electric-resonance sounding (scanning) of the cross-section, as well as the method of measuring the intensity of the natural electric field of the Earth with fluxmeters, were further tested on the vessel. In the southern Atlantic and in the region of the Antarctic Peninsula, a significant number of sites that are promising for hydrocarbon exploration have been found. New evidence has been obtained in favor of deep (mineral) synthesis of hydrocarbons: a) the discovery of deep channels of the of fluids and mineral matter migration; b) fixing of anomalous responses at the resonant frequencies of the hydrocarbons exclusively within the contours of the channels and in their surroundings; c) the fixation of anomalous responses at the resonant frequencies of oil gas and condensate in the channels to a depth of 57 km. Below this boundary, the responses at the resonance frequencies of hydrogen and carbon are fixed (this is not above this limit). The tested mobile technology of frequency-resonance processing of remote sensing data (satellite images) and photographs is recommended for use on the territory of Ukraine for the purpose of a preliminary assessment of the oil and gas potential of poorly studied and unexplored search blocks and local areas. The use of this technology can have a significant effect when searching for industrial accumulations of hydrocarbons in unconventional reservoirs (including the areas of shale spreading, coal-bearing formations, and crystalline rocks). Mobile technology can also be successfully used during studies of poorly studied areas and blocks within known oil and gas fields, as well as for the operative detection and mapping of large concentrations of hydrogen in areas of intensive hydrogen degassing.
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Integral evaluation of the oil and gas prospect of search blocks and areas by the frequency-resonance method of satellite images processing
Authors N. A. Yakymchuk, S. P. Levashov and I. N. KorchaginSummaryThe results of testing the technology of integrated assessment of oil and gas potential prospects of exploration blocks and sites using modified methods of frequency-resonance processing of satellite images, as well as an improved method of vertical sounding (scanning) of the cross-section to determine the depth of the hydrocarbons and rocks are analyzed. Demonstration studies were carried out within a large area in the Khanty-Mansiysk Autonomous District (KhMAO, Western Siberia). Anomalous responses at the resonant frequencies of oil, gas condensate, gas, helium, carbon, hydrogen and amber (!) were recorded within the entire survey block, and the vertical channels were found, filled with (1) ultramafic rocks, (2) clastic sedimentary rocks (sandstones, clays etc.), (3) carbonate rocks (marls) and (4) salt. By a vertical scanning of the cross-section the estimates of the depths of the predicted anomalous polarized layers of oil type have been received. Additional studies were carried out at three sites within the survey block. The application of this mobile technology at the initial stages of prospecting work will allow seismic 3D surveys of enhanced detail to be carried out within mapped anomalies of the “hydrocarbon deposit” type. The use of technology to further assess the oil and gas potential of the structures, identified by seismic exploration, will provide the opportunity to optimize the location of exploratory wells. Purposeful use of technology in the search and exploration of hydrocarbon accumulations will allow speeding up and optimizing the overall geological exploration process for hydrocarbon resources.
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Depth structure of the area of Klyuchevskaya group of volcanoes location according to the frequency-resonance processing of satellite images
Authors N. A. Yakymchuk, I. N. Korchagin and G. M. DrogitskayaSummaryThe results of experimental studies carried out using the technology of frequency-resonance processing and interpretation of Earth remote sensing data (satellite images) and photo images with the aim of studying the internal structure of volcanos are analyzed. The experiments were carried out at sites of the location of the famous Klyuchevskaya group of volcanic complexes. The results of the deep frequency-resonance sounding of the cross-section in the surveyed area show that the roots of the volcanoes existing here (channels of deep fluids and mineral matter migration) are located in the molten (liquid) rock layer, which is detected and fixed on the globe almost everywhere in the depth interval of 194–225 km, as well as at depths of 470 km and 723 km. Within the three surveyed areas, kimberlite pipes with diamond inclusions, as well as a channel of the mineral matter migration, were found. The materials of the research carried out in the area of the Klyuchevskaya group of volcanoes in Kamchatka can be considered as confirmation of the assumptions that volcanic structures can be a source of hydrogen. Operatively conducted experimental studies have shown that the frequency-resonance method of Earth remote sensing data processing and interpreting can be used to study the deep structure of the Earth's tectonic structures and to search for combustible and ore minerals.
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Features of the structure of some famous volcanic complexes in Italy
Authors N. A. Yakymchuk, S. P. Levashov and I. N. KorchaginSummaryThe results of experimental studies carried out using the technology of frequency-resonance processing and interpretation of remote sensing data (Earth remote sensing) (satellite images) and photographs with the aim of studying the internal structure of volcanic structures are analyzed. The experiments were carried out at the locations of well-known volcanic complexes Phlegrean Fields and Vesuvius, as well as the mud volcano in the reserve of Riserva Naturale Salse di Nirano in Italy. Additionally, the photos of the Tatja and Mendeleev volcanoes, located on the Kunashir island of the Kuril Ridge, as well as of the Taranani volcano in New Zealand, are processed by the frequency-resonance method. The results of the deep frequency-resonance sounding of the cross-section in the vents of active and old volcanoes show that the roots of almost all volcanoes end in a molten (liquid) layer of rocks, which is detected and fixed on the globe almost everywhere in the depth interval 194–225 km. Operatively conducted experimental studies showed that: a) the frequency-resonance method of remote sensing data processing and interpreting can be used when conducting a reconnaissance survey of large-sized and hard-to-reach areas within a short time; b) the use of mobile and direct-prospecting methods (including the frequency-resonance technology of satellite images processing) in the search and exploration of ore and combustible minerals will contribute to the acceleration and optimization of the exploration process in general.
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Application of technology of frequency-resonant processing of satellite images and photographs on area of hydrogen production and hydrogen degasation of the Earth
Authors N. A. Yakymchuk, S. P. Levashov and I. N. KorchaginSummaryThe results of experimental studies carried out with using the technology of frequency-resonance processing and interpretation of Earth remote sensing data (satellite images) and photographs in order to study the possibility of using it for hydrogen accumulations searching and locating are analyzed. The experiments were carried out at the site of hydrogen production in Mali, at the site of exploratory well drilling in the USA, and also at the sites of visible hydrogen degassing in various regions of the world. When processing an image of a hydrogen production site in Mali, signals were recorded at the resonant frequencies of hydrogen and deuterium. By scanning the cross-section near one of the wells, the responses at the hydrogen frequencies were recorded in the following depth intervals: 1) 25–245 m; 2) 635–750 m; 3) 950–970 m. The results of studies at the well drilling site in the United States allow us to conclude that there are no hydrogen accumulations in commercial volumes within it. However, this area is promising for the search for oil, gas and gas condensate. At the surveyed areas of visible hydrogen degassing in the USA, Russia, Turkey, Ukraine, and Oman almost always recorded responses at the resonant frequencies of hydrogen and deuterium. Within these areas, vertical channels of deep fluids, mineral matter, and chemical elements migration were found. In many parts of the survey areas, responses were also recorded at the resonant frequencies of oil, gas and condensate. The results of experimental studies of a demonstration character allow us to state that the mobile technology of frequency-resonance processing and decoding of remote sensing data (satellite images) and photographs can be successfully used for the operative detection and mapping of possible accumulations (large) of hydrogen in areas (sites) of intensive hydrogen degassing.
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Enhancement factor in anisotropic media
Authors A. Stovas, Yu. Roganov and V. RoganovSummaryWe develop a new characteristic of anisotropic media that is defined by the ratio of differential solid angles for velocity vectors defined in phase and group domain. This characteristic helps to obtain the caustics and singularity points postions.
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Defining of 2-D surfaces of a combined hierarchical object located in the block layered geological medium using the data of active acoustic monitoring
Authors O. Hachay, A. Khachay and O. KhachaySummaryPurpose. Geological medium is an open system which is influenced by outer and inner factors that can lead it to an unstable state. That non stability is often occurred locally and these zones are named as dynamically active elements, which are indicators of potential catastrophic sources. These objects differ from the embedded geological medium by their structural forms, which are of hierarchical type.
Design/methodology/approach. We developed an algorithm for constructing the equation of theoretical inverse problem for 2-D linear polarized longitudinal elastic wave as a source of excitation of the N-layered elastic medium with combined hierarchic plastic, elastic and density inclusions located in the (ν−1), ν and (ν+1) elastic layers. An iteration process of solving the inverse problem for the case of certain configurations of 2D hierarchical inclusions of l, m, s ranks is elaborated using integral and differential equations.
Findings. When interpr eting the results of active wave monitoring it is need to use the data of such systems that are configured to study the hierarchical structure of the medium.
Practical value/implications. These results will be the base for constructing new systems of monitoring observations of dynamical geological objects.
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The 3D thermal effect of young erosion and deposition within the elevated part of the Mid-Norwegian continental margin
Authors Y.P. Maystrenko, L. Rise, D. Ottesen and O. OlesenSummaryA 3D model of the temperature distribution beneath the north-eastern part of the Mid-Norwegian continental margin (the Lofoten-Vesterålen area), one of the most pronounced elevated passive continental margins in the world, has been studied to quantify the thermal influence of high erosional and depositional rates mapped during the late Cenozoic. A lithosphere-scale 3D structural/density model of the Lofoten-Vesterålen area has been used as a structural skeleton for the sedimentary infill, crystalline crust and lithospheric mantle during a 3D thermal modelling. The modelled thermal effect of the late Cenozoic erosion within the Lofoten-Vesterålen area is highlighted by a positive thermal anomaly within the areas where sedimentary and crystalline rocks were significantly eroded. A negative thermal influence has been obtained in the areas where deposition of the eroded material occurred. The erosion-related, positive, thermal anomaly reaches up to +27 oC at depths of 17–22 km. Two deposition-related, negative thermal anomalies are characterized by minimal values of around −70 oC at 17–20 km depth and −48 oC at 12–14 km depth beneath the adjacent deep ocean basin and the subsided continental margin, respectively.
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Analysis of Spatial Variability of Soil Fertility in Precision Agriculture Technologies
Authors V.I. Zatserkovnyi, P.I. Trofymenko, N.V. Trofimenko and I.O. MakedonskaSummaryThe paper presents the results of the analysis of the technological components of precision agriculture, the efficiency of their use, the main current trends and prospects of development. Based on the data of scientific and scientific—technological researches from the leading specialists in the field of precision agriculture, as well as the results of their own developments, the advantages and level of effectiveness of its component components have been identified. It is established that the introduction of parallel driving systems, the introduction of mineral fertilizers and plant protection products can save up to 50% of material resources.
It has been shown that the distance forecasting of the grain yield and wheat straw yield of winter wheat and the construction of high resolution digitization charts on the basis of spectrozonal analysis of the Sentinel-2A image provided satisfactory results. In conditions of significant variability of soil cover, the ave rage error of approximation of grain yield was Āgrain = 14.5%, straw according to Āstraw = 15.3%. The determination coefficients for grain yield and straw were respectively 0.64 and 0.74.
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Analysis of 3D model creation approaches
Authors V.I. Zatserkovnyi, O.E. Senkevych, P.I. Trofymenko and N.V. TrofimenkoSummaryAnnotation. The following issues are considered – the topical issues of the modern land and urban cadaster, which are characterized by the presence of a large number of complex three-dimensional objects of real estate. These objects cannot be displayed in a two-dimensional registration system.
The development of a modern cadastral system with the use of three-dimensional modeling is analyzed. The possibilities of using geographic information systems for the creation of three-dimensional objects during a cadastre and real estate valuation are discussed.
Thanks to the use of a three-dimensional cadastre, it is possible to improve substantially the quality of accounting of such infrastructure elements as communication networks and pipelines and underpasses, as well as multi-level complexes, multi-apartment buildings and a number of other objects. The three-dimensional reflection of the terrain and objects located on it, significantly increases the possibili ties of cadastral accounting and mechanisms for ensuring property rights, planning, design and taxation.
A software analysis has been conducted that can be used to create three-dimensional cadastral models.
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Mapping supply and demand of provisioning ecosystem services in Lithuania
Authors P. Pereira, O. Menshov, K. Miksa and M. KalinauskasSummaryEcosystem services (ES) are defined as the direct and indirect goods provided by nature to people. For a correct assessment, land management and territory planning, mapping is a crucial exercise. Understand the spatial distribution of supply and demand dimensions is key to identify the areas where they mismatch and overlap and therefore measure the access of people to ES. The objective of this work is to map the supply and demand of provisioning ES in Lithuania and assess the trade-offs among them.
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Assessment Engineering Geological Zoning of Kalush City Using ERS Data for Urban Development
Authors O. Mykolaenko, P. Zhyrnov, Y. Sadoviy, O. Tomchenko and I. PidlisetskaSummaryThe methodology of assessment engineering geological zoning of Kalush city of Ivano-Frankivsk region with particularly complicated geodynamical and geoecological conditions was appended. Previously elaborated taxonomic system of territorial units provides the basis for engineering geological zoning. The allocation of large natural geomorphological districts detailing in slopes' steepness classification for construction development and districts, which completely presented by technogenic landforms was initially proposed for Kalush city. Each allocated district is divided on engineering geological sites due analytical assessment of geotechnical, hydrogeological, geodynamical conditions and ecological and engineering geological planning restrictions. Multi-temporal space images from 2005 to 2017 years with manifestation of different supergene geological processes were analyzed to better assess of geodynamical situation. Four categories of sites with different levels of suitability for construction were allocated, including useless city's sites for constructions, which require primary urgent reclamation measures on whose realization the ecological balance of geological environment of Kalush and the health of him inhabitants in future depends. The proposed method of assessment engineering geological zoning allows to provide credible and accurate information for the construction development direction's understanding and operational ecological decision making.
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Methods of remote sensing of the Earth in the study of the geomorphological state of the surface waters of the Desna River
Authors L.V. Plichko, V. I. Zatserkovnyi and M.D. BohoslavskyiSummaryThe article considers the possibility of using remote sensing methods to detect changes that occur in surface waters. Examples of the use of remote sensing methods for studying the geomorphological state of the quality of surface waters of the Desna River are given. Further, a combination of space and field observations was proposed to obtain information on seasonal and perennial changes in surface waters. Moreover, the use of remote sensing methods will allow predicting the state of water bodies and making effective management decisions.
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Application of the EasySeis software for construction of seismic images on the Dniper-Donetsk depression
Authors S. Vyzhva, I. Solovyov, V. Kruhlyk and G. LisnySummaryThe easySeis software was developed at the Department of Geophysics of the Taras Shevchenko National University of Kyiv with the support of Geounit Company. The program complex is intended for the construction of 3-D seismic images of heterogeneous anisotropic geological medium by direct transformation of seismograms of common sources. Computational schemes are based on a number of original technologies for imaging of anisotropic medium proposed by the scientists of the Department of Geophysics. The definition of a velocity models for migration involves the use of checkshots or a vertical seismic profiling data. With the help of these data, a volumetric distribution of vertical velocities in a geological medium is formed. Such a distribution allows us to obtain reliable positions of the waves of the images and the corresponding structural elements of the geological medium in depth. This makes it possible to directly obtain reliable seismic images in a depth scale w hich is the main mode of program operation. If necessary the option of depth to time conversion is used via distribution of the vertical velocities. The volumetric distribution of the migration velocities for anisotropic heterogeneous geological medium is determined by calculating of two-dimensional or three-dimensional velocity spectra using surface seismic data. The results of seismic images construction for the Khrestishchensky area on the territory of the Dniper-Donetsk depression are considered.
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Study of the dynamic of magnetic field and soil magnetism along the Malniv-Nemyriv-Uhniv transect
Authors R. Kuderavets, O. Menshov, V. Maksymchuk and I. ChobotokSummaryThe study of the dynamic of the magnetic field is an important tool for the identification of regional tectonics active zones and faults. The main task of the present study is to identify the dynamic changes of the magnetic field, the deep structure and the latest tectonics in the junction zone of the Carpathian Foredeep and the East-European Platform. The genetic relation of the magnetic field with the oil and gas fields at the Carpathian region is considered. The significant changes of the local magnetic field and the occurrence of the dynamic magnetic anomalies of ΔΔT with the amplitude from −1.1 to 3.4 nT per year were registered. These anomalies are related to the deep faults (Carpathian Foredeep Fault, Rava-Ruska Fault). The results of soil magnetic studies distinguished three patches: the Southern part of the Carpathian Foredeep with higher MS values, the Carpathian Foredeep and transition to the Rava-Ruska Zone through the Gorodok fault with high dispersi on of the MS, the Lviv Paleozoic Depression with minor MS differentiation and low values. The results of the magnetic mineralogical analysis confirmed the presence of the significant amount of paramagnetic minerals in soils.
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