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Geoinformatics
- Conference date: May 11-14, 2021
- Location: Online
- Published: 11 May 2021
41 - 60 of 154 results
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Main state topographic map: structure and principles of the creation a database
Authors Yu. Karpinskyi, A. Lyashchenko, N. Lazorenko-Hevel, A. Cherin, D. Kin and Ye. HavryliukSummaryTopographic databases and geoinformation web services for their use in spatial data infrastructure have become the predominant type of final products of national cartographic and cadastral agencies of developed countries. This paper presents the results of research work on the creation of a geographic information system of the topographic database “Main State Topographic Map”, the initial filling of which is carried out based on updated digital topographic maps of the scale 1:50 000. The proposed solutions comply with international standards in the field of geographic information, and their implementation provides a comprehensive application of the latest geoinformation technologies and geospatial databases to create a seamless topographic database for the entire territory of Ukraine with wide access to it by interested users on the system geoportal. The main features and innovations of the topographic database being created include: completeness of classes of topographic features and their attributes; an integrated system for identifying topographic features in a database, in which each topographic feature is assigned a unique topographic identifier, as well as a code according to the industry classifier; integrity of geometric models of topographic features, in which features are not fragmented by the boundaries of the sheets of topographic maps on which they are reflected; topological consistency of geometric models of topographic features at the level of planar graph topology for all adjacent and intersecting features; support for metadata both for classes of topographic features, and for their specific instances and their attributes; use of an object-relational database management system for the implementation of an integrated storage of all information resources of the system; harmonization of geospatial data and metadata models, data exchange formats, methods and procedures for assessing data quality with the requirements of the series of international standards of the ISO 19100; prompt updating of data in the system based on the results of continuous topographic monitoring of the area; providing wide and open access to topographic data through the system’s geoportal.
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Peculiarities of geological structure of neogenic deposits of Haiv gas deposit and their influence on filtration capacity parameters
Authors D. D. Fedoryshyn, O. N. Trubenko, V. V. Dmytruk, S. D. Fedoryshyn and V. V. HumeniukSummaryThe results of studying the collector properties of rocks-collectors of the geological section of the Sarmatian and Helvetic layers of the Gayivske gas field are considered. The data of physical characteristics of productive rock-collectors are given which were obtained by the results of geological-geophysical and petrophysical researches. According to the results of experimental studies of samples of the bore core which was taken from the rocks-collectors of the Sarmatian and Helvetic layers, their geological and petrophysical parameters were established.
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Radial characteristics of lateral logging in thin-bedded formation
Authors M. Myrontsov and O. KarpenkoSummaryIt is shown that the simultaneous influence of the borehole and the bedding thinness can significantly distort the data of inversion of lateral logging in the conditions of the Dnipro-Donetsk depth. Examples of such influence are given for the main types of reservoirs (water-saturated, gas-saturated, oil-saturated). The influence of the borehole and invaded zone on the formation evaluation is investigated. A method has been developed that allows to determine the mutual influence of the accuracy of determining the geoelectric parameters of the invaded zone and formation.
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Remote detection the CO2 concentration within different land classes cover on the territory of Ukraine
Authors M. A. Tymchyshyn, L. A. Yelistratova, A. A. Apostolov and I. F. RomanciucSummaryThe CO2 concentration were estimated using GOSAT and Proba-V satellite data within different land classes of Ukraine. The methods of remote sensing and GIS technologies were used. The combined use of land cover classification map and CO2 concentration allowed to obtain concentration changes within the different types of land cover during 2018. The annual changes of CO2 concentration in Ukraine were established. It was determined maximum in August and minimum in April CO2 absorption. The CO2 concentration changes for Ukraine is 7.84 ppm. Quantitative changes in CO2 concentration for each land cover class of Ukraine based on Proba-V satellite data were obtained.
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Geoinformation modeling of exogenous geological processes on the territory of the Kyiv-Pechersk Lavra
SummaryThe purpose of this work is to analyze the data of long-term observations of surface and groundwater regimes to determine the factors that lead to disturbance of hydrogeological conditions and the development of exogenous geological processes (EGP) in the Kyiv-Pechersk Lavra and the determination of areas characterized by negative EGP processes.
The urgency of the work is to identify potential areas of development and spread of EGP, identification and forecasting of changes in groundwater regime with subsequent leveling and elimination of negative factors.
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Facies interpretation from gamma ray (gr) log as basic well logs applied to Volodymyrska field (Dnipro-Donetsk depression)
Authors V. Yemets, V. Antoniuk and I. BezrodnaSummaryThis paper presents the interpretation of data (depth interval 1700–2560 m) from well-logs obtained from Volodymyrska Field (Dnipro-Donetsk Depression). GR log is mainly used to predict the varying lithology in borehole by measuring the spontaneous emission of GR radiation from rocks. But the study aims at using Gamma Ray (GR) log in establishing the sedimentary facies, their successions and environments of deposition in this field. Five log facies were recognized in the study area: a cylindrical-shaped facies representing fluvial channels; a funnel-shaped facies representing shoreface; a bell-shaped facies representing proximal deep sea; a symmetrical-shaped facies representing transgressive shelf sands; a serrated-shaped facies representing debris flow and canyon fill. Each of the type of facies has its own sediment supply and characteristic provides a stratigraphical frame for environment interpretation.
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Concerning oil and gas potential of the underthrust uplifts within the zone of influence of the Precarpathian Fault
Authors L. S. Monchak, S. G. Anikeyev, T. V. Zderka, N. P. Khovanets and A. V. YaremaSummaryThe paper studies oil and gas prospects of the Mesozoic and Neogene sediments of certain underthrust uplifts located at the edge of European Craton within the influence zone of the deep Precarpathian Fault. These uplifts are identified based on the results of the analysis of geological and geophysical evidence and according to the geological interpretation of the local Bouguer gravity anomalies including geology-gravimetrical modeling with the wells data being considered. Some brief geological and tectonic characteristics of promising areas are given.
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Geoinformation components of sunflower yield simulation in arid climate using the model aquacrop
Authors A. Krukivska, N. Hrechana, S. Snizhko, O. Shevchenko and M. MatviienkoSummaryIn Ukraine the crop losses associated with adverse weather and climatic conditions in agriculture can range from 10 to 70%. The main reason for these losses is the drought. In the last decade, the repetition and the duration of hot weather periods in Ukraine increased significantly. The consequences of climate change for agriculture will be related to changes in temperature and humidity conditions, but also to the reduction of soil fertility, desertification, etc. In the conditions of climate change, when water is a key limiting factor in crop production, it is necessary to use modern methodologies of agrometeorological research based on numerical multiparameter models with using a wide range of geographic information resources and technologies. This paper presents the methodology and results of modeling the conditions of heat and moisture supply of sunflower and their impact on the formation of crop productivity in the Kherson region using the model AquaCrop. Correct use of geoinformation parameters, soil and vegetation characteristics allows to obtain reliable results that can be used for early regulation of soil water balance by irrigation.
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Tritium content as indicator of Cenomanian-Callovian groundwater complex state changes as a result of long-term operation within Kyiv city
Authors T. Koshliakova, O. Koshliakov, O. Dyniak and I. KoshliakovaSummaryThe paper considers the issue of changing the state of Cenomanian-Callovian groundwater complex. The studied groundwater complex is an important source of centralized and well-room potable water supply to Kyiv population, so the authors pay attention to study of hydrogeological changes of the complex state during long-term operation. The study confirms changes in water exchange structure, which are reflected in significant changes of Cenomanian-Callovian groundwater complex piezometric pressures surface and also in chemical state changes. In order to establish water exchange changes, a comparison of radioactive isotope hydrogen - tritium - content in investigated groundwater complex for 2014 and 2017 was performed. Mathematical-statistical methods were used to establish changes. The obtained results indicate that during 2014–2017 the chemical state of Cenomanian-Callovian groundwater complex in terms of tritium content as a whole changed. Since 2008, due to groundwater production reduction, there has been a recovery of groundwater levels and a positive trend of changes in chemical state of investigated groundwater complex in the direction of its gradual return to its natural state.
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Remote sensing monitoring of the landfill sites as a factor of adverse environmental impact
Authors O. V. Shevchuk, O. T. Azimov and O. V. TomchenkoSummaryThe report gives reasons for the relevance of remote sensing methods for the study of municipal solid waste (MSW) landfills, which are the effective tool for their monitoring. The Zdolbuniv MSW landfill (the Rivne region, Ukraine) as a case study allows demonstrating informativeness of identifying MSW landfill Sites and the adjusted areas using the spectral characteristics and texture of earth’s covers obtained from the satellite images for the different years. The informativeness of the study of dynamics for landfill geometrical parameters, the change of its internal “structure”, the functional changes in the surrounding landscape elements (first of all, the changes in the forest stands) is demonstrated.
In particular, satellite image data for the period of 2003 to 2019 allow identifying the increase of a number of the Zdolbuniv landfill Sites at the expense of adjacent forest stands. Thus, in 2003 one Site of the landfill is operated, whereas in 2019 – already three ones. The study of dynamics for the change of the total area of landfill has revealed the increase of this area by approximately 3.13 times (from 6 521 to 20 438 m2, respectively). In addition, the total perimeter along the contours of its stages has enlarged more than 2.47 times (from 438 to 1 083 m, respectively).
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The influence of the assessment of the terrain on the design solutions for water regulation on the drained lands of the Polesie zone
Authors P. Volk, A. Rokochinskiy, O. Shevchenko, R. Koptyuk, V. Turchenyuk and L. VolkSummaryIn projects of construction and reconstruction of reclamation systems it is necessary to consider a large number of various natural factors which influence a choice of their type and a design. In drained areas, relief conditions are crucial for the choice of water regulation technologies, type, and design of drainage systems. The presence of considerable relief determines the ineffective use of precipitation due to the occurrence of surface runoff and the uneven formation of the groundwater level and the water regime on the drained lands. The relief shows the conditions of filling small rivers, and this must be taken into account in current projects of their clearing. The schematization of a relief of the drained lands in a zone of sufficient humidification and unstable humidification of Ukraine for various slopes and changes of heights of a surface of the land with the allocation of four schemes is presented. Taking into account the relief of the earth's surface in forecasting and optimization models for the selection of rational technological and design solutions for water regulation on the drained lands, it will be possible to correctly choose the type and design of drainage systems in construction and reconstruction projects.
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Prospects for the replenishment of resource base in the Udmurt Republic by means of discovery of small oil fields and domanic formation deposits
Authors G. Kashin and O. LikhachevaSummaryRapid crude oil depletion is picking up speed in the Udmurt Republic, with production rate decrease being common at long-term operated oil fields of large and medium size. Therefore the main challenge in this region is to stabilize & increase oil extraction by means of exploring more promising oil fields of small size and deposits occurring in unconventional reservoirs, namely domanic formations. However, some issues cause difficulties. Firstly, 2D and 3D seismic data often do not provide the reliable mapping of small fields and deposits that occupy unconventional reservoirs. Secondly, geological prospecting and exploration, along with exploratory drilling, make these works costly. Also, the reserves’ estimation for such deposits often contains errors. Passive seismic is proposed to solve these problems, reducing exploratory and exploitation drilling in cost, with the time required for geological exploration being diminished.
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Soil properties at slope – the advantage of magnetic susceptibility application
Authors O. Kruglov, O. Menshov, O. Andreeva and B. KruhlovSummaryThe information about the spatial distribution of the soil properties at slope is important for land managements as well as for the soil protection. The different agronomic indicators such as the organic carbon content, physical clay (the sum of particles with the size less than 0.01 mm) can be easily detected by magnetic susceptibility (MS) measurements of soil. According to our results, the relation between the studied parameters is strong. Spearman correlation coefficient is: ρ= -0.755. This suggests that erosion processes have a significant impact on soil loss of small fractions, i.e. leads to the particle size decrease. From the other hand, the described correlation concludes the destroying of the water regime of eroded soils in conditions of unstable or insufficient moisture. We obtained much higher correlation of the MS and soil properties comparing with earlier received correlation between soil properties (physical clay and organic carbon). The correlation between the humus content and MS strongly depends of the land use. For the local level (area 100 ha): ρ = 0.68. For the bigger areas of about 2000 ha, the correlation was much lower because of the inhomogeneous of the physical, chemical, and geomorphological parameters of the arable lands.
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Features of the seismic migration method in the romukrseis profile data processing
Authors O. Verpakhovska, V. Pylypenko and O. ChornayaSummarySeismic migration is an important procedure for seismic data processing. This procedure allows to imaging the structure of the geological section in the dynamic characteristics of the observed wave fields. The RomUkrSeis regional profile data was observed with the method DSS. The observing system of DSS has irregularity the placement of the shots and receivers and very large offsets so the traditional reflection migration is not effective for processing of the DSS records. The finite-difference reflection/refraction migration method is the only possibility to image the geological structure from the DSS data. This migration method was proposed and developed at the Institute of Geophysics by. S.I. Subbotin name of the National Academy of Sciences of Ukraine. The main idea of this migration method is the involving in the processing the refracted waves which registering on the large offsets. The features of the finite-difference reflection/refraction migration method on the RomUkrSeis regional profile data processing are presented in the paper.
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Infogeological modeling of the geological environment of the military activity territories
SummaryThe main methodological instrument of informational support of research and works on the treatment of the geological environment by territories of military activity is information modeling.
Methods developed on this paradigm's principles aim to eliminate the consequences of military activity and restore the territories of the military conflicts.
Ground research was developed using conceptual models, particularly checking main components of these models that aim at determined by them indetermination. To identify the influence of the military activity sources, we used the Leopold Matrix and Sorensen Level Diagram, network diagram, method of the combined analysis of maps, and factor analysis. The evaluation of the spread of factors of military and technogenic load of chemical origin in the functional zones and subzones of the military polygon was carried out based on the complex approach to the ecological evaluation of the contamination of the territories of intensive military and technogenic load using the landscape profiling and imitating modeling taking into account geochemical and hydrometeorological conditions.
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Specificities of absorbing anelastic characteristics of zeolite, quartzite, alluvial sandstone sio2, porous polystyrene
Authors A. P. Onanko, D. V. Charnyi, Y. A. Onanko, O. P. Dmytrenko, M. P. Kulish and R. V. HomenkoSummaryThe elastic modulus Е, the shear modulus G, Poisson coefficient μ, internal friction Q-1 are dependent from the texture, microcrack formation, minerals anisotropy. The presence of many the acoustic emission secondary maxima indicates the variety of material composition and structure of the rock, a set of allotigenic and authigenic minerals, cement composition, texture, and conveys, to some extent, the nature of the dia- and catagenetic processes. The measuring of internal friction background Q-10 after temperature, mechanical treatments gives information about the changes of the elastic strains σi fields in rock.
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Singularity of elastic characteristics of zeolite, quartzite, sandstone sio2, expanded polystyrene
Authors A. P. Onanko, S. A. Shevchuk, Y. A. Onanko, O. P. Dmytrenko, M. P. Kulish and S. A. PopovSummaryThe internal friction background Q-10, which carry on the information about the changing of the elastic strains fields in rocks, was studied. Elastic waves pulses were discovered from microfractures that connected with elastic balance in minerals. The elastic anisotropy integral coefficient (A_μ ) ⃗ and the polarization angle – the deflection of elastic displacements vector U ⃗ from wave normal direction n ⃗ φ_P ⃗ =(U ⃗,n ⃗) and are the most universal characteristics of anisotropy and testify about anisotropic deformation ε at the rock hydrostatic compression P. The data are obtained from elastic constants Cmnkl sandstones SiO2, limestones CaCO3.
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GIS technologies for monitoring forest plantations
Authors V. Trysnyuk, O. Demydenko, T. Trysnyuk, L. Horoshkova, Іe. Khlobystov and Y. HolovanSummaryThe basis for solving the main tasks of forestry is the classification of forests on the basis of remote sensing of land, which involves the use of uncontrolled and controlled classification. The study attempts to implement a method of geoinformation analysis of ecological properties of the area, taking into account the geochemical load on the vegetation. The result of the analysis can be used to clarify the areas of emergencies in the decision-making process online. The regional landscape-geochemical structure of the research area is an informative and objective basis for assessing the impact of the geochemical field on the health of the population.
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Modeling of dangerous processes of natural and man-made disasters
Authors V. Trysnyuk, T. Trysnyuk, I. Radchuk, L. Horoshkova, Іe. Khlobystov and Y. NagornySummaryThe article presents the results of the development of scientific and methodological systematic approach to assessing the effectiveness of the organizational and technical system of emergency rescue operations during the elimination of emergencies of natural and man-made origin.Based on the obtained results, there is an increase in the integrated efficiency of the resource potential of the organizational and technical system of rescue operations by increasing the functional (systemic) or corresponding economic effect.
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Change of atmospheric density at high altitudes due to tidal forces
Authors A. Kazantsev and L. KazantsevaSummaryThe combined European database of meteor orbits EDMOND for 2012–2016 was analyzed. It was found that meteors at high altitudes (120 – 145 km) are mainly registered in the phase of ebbs in the atmosphere. This shows that tidal forces from the Moon and the Sun can change the density of the upper atmosphere in a significant range of altitudes.
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