International Conference of Young Professionals «GeoTerrace-2023»

The current level of geographic information systems allows for the creation of interoperable geospatial data for the purpose of making management decisions by the authorities. Public authorities are mostly data owners. The data owners must be competent customers and understand what geospatial data they need to order from the producer, how to organize this process and what requirements they need to consider. In order to ensure that civil servants have adequate knowledge of NSDI development, a training program on the Basics of Creating Interoperable Geospatial Data was developed, and training courses were organized and conducted for more than 60 central and territorial executive authorities. This article describes the implementation of the educational component of NSDI for state servants through special certified training programs. This project was supported by the USAID Agricultural and Rural Development Program (AGRO). All developed training lecture materials are publicly available on the Internet.

The study was carried out on the flat part of the Dniester River section downstream from the city of Halych at a distance of 11 km. The proposed study considers the technological scheme of hydrological modelling of the flooded land zone and the main components of this scheme: DEM construction, changes in the roughness of the channel and the riverbed area by Manning’s coefficients, the impact of the planned channel displacement on Manning’s coefficients, and indications of water level rise. The paper uses our own research based on medium-resolution satellite imagery and topographic maps of various scales of 1:100000 over a 100-year period. The main objectives of the study are to develop a technological scheme for hydrological modelling of flooded lands based on remote sensing data, topographic maps using the HEC-RAS module and determine the main components of this scheme; to determine the magnitude of planned channel displacements over a long period in order to determine the stability of the channel and changes in the bedding surface of the riverbed area; to develop a methodology for determining the refined Manning’s coefficients as a fundamental element of hydrological modelling based on the obtained changes in the riverbed areas; to carry out hydrological modelling. The novelty of the study is the use of a test object for assessing the accuracy of hydrological modelling, which was a high-resolution satellite image at the time of the flood in June 2020, which allowed us to determine the influence of the main parameters on the modelling accuracy.

On the basis of the landscape approach, the location of the boundary of the highlands landscape tier within the Chornohora landscape of the Ukrainian Carpathians was identified. An analysis of the features of the placement and load of pasture farming on mountain geocomplexes was carried out, taking into account the area and specialization of polonynas, the number of livestock, etc. The impact of pasture farming on the structure and features of the vegetation cover of the high and mid-mountain landscape tiers of Chornohora, where the largest polonynas of the massif are concentrated, is characterized. The main result of the research is a compiled map of the current vegetation cover on the example of the section of “Sheshul-Petros”, which also reflects the location of the forest on the territory of the forest and the height position of the timberline. As a result of the research, more than 10 km2 of meadows and shrubs of secondary origin were identified and mapped, which in modern conditions of climate warming and reduction in the number of livestock are overgrown with shrubs and tree species.

A palaeomagnetic study of the basic rock of the Volodarsk-Volynskyi masiff of the Korosten pluton was performed. Based on the results of temperature demagnetization of studied rocks, the viscous low-temperature and high-temperature characteristic component of magnetisation were identified. The characteristic bipolar component was isolated for rocks of 10 sampling sites (anorthosite and gabbro) with geochronological age ca. 1.76 Ga, its mean direction D = 213.5°, I = 10.8°, k = 60.2, α95 = 6.3°. Rock magnetic and microscopy data indicate the primary nature of this component, the carrier of which is thin isolated needle-like and lamellar exsolution of ferromagnetics with Curie temperature ca. 580 °C in plagioclases and pyroxenes. The new palaeomagnetic pole for studied rocks of age about 1.76 Ga, calculated based on characteristic component of magnetisation, has parameters Plat = 26.9, Plon = 170.7, A95 = 4.5. The new results are in good agreement with the data previously obtained for other rocks of similar age within the Volyn and Ingul domains of the Ukrainian Shield, which may indicate the development of these domains within Ukrainian Shield as a single tectonic unit starting at least from 1.76 Ga. According to the new data, about 1.76 Ga the Ukrainian shield was located slightly south of the equator.

Environmental monitoring is a very important field nowadays, as it allows for disaster prevention, fire damage assessment, snowmelt forecasts, etc. All this tasks heavy rely on the quality of the satellite data. Radar data is a fairly new approach which allows to retrieve land surface information in a cloudiness condition and even at night. One of the main quality parameters of satellite images is spatial resolution, which stands for how well different small objects differentiate on the image itself. Thus, satellite SAR data spatial resolution enhancement is an important modern task. In this paper a method for synthetic-aperture radar’s (SAR) data spatial resolution enhancement is given, which is based on the fusion of two low-resolution source images into a single one high-resolution image. Radar data retrieved in different polarization modes was converted into unified physical land surface property – dielectric permittivity, using the well-known Oh radar backscattering model. Converted images were fused into a single high-resolution image and the spatial resolution of the result was quantitatively evaluated using the MTF approach.

In recent times, the agricultural and rural sectors of Ukraine are facing substantial losses, posing a grave risk to the nation’s food security. Additionally, a major flood transpired along the Dnipro River following the deliberate destruction of the Nova Kakhovka dam unleashed a wave of ecological damage. The study is aimed at identifying irrigated lands that have lost access to water supply and their areas, as well as the forecast of their further use. The terrorist act at the Kakhovska HPP actually left 94% of irrigation systems in Khersonska, 74% in Zaporizska, and 30% in Dnipropetrovska oblasts without a water source. Areas of irrigated agricultural land, which are in the zone of influence of the Kakhovsky reservoir, including occupied territories, according to preliminary estimates, amount to 1267.8 thousand hectares, of which about 500 thousand hectares had potential irrigation. We consider it necessary to carry out further clarification of the area of irrigated land in the area of influence of the Kakhovsky Reservoir by means of spatial comparison and digitization.

The field of unmanned aerial vehicle (UAV) technology is rapidly advancing and has become increasingly popular in various fields, including surveying and mapping. The ability of UAVs to capture high-resolution images of the Earth’s surface with ease and precision has made them an invaluable tool for collecting data in remote and hard-to-reach areas. However, the accuracy of the data obtained through UAVs is a critical factor that must be carefully evaluated to ensure the reliability and effectiveness of the data collected. The paper focuses on exploring different methodologies for determining the accuracy of UAV data processing and approaches for preliminary assessment based on Ground Sampling Distance (GSD). The DJI Phantom 4 Professional UAV was used for data collection, and the Agisoft PhotoScan Professional software was employed for processing. To evaluate the accuracy, the study calculated deviations of control points, and the method was applied to a flat terrain area and a ravine area. Additionally, the method of determining deformation of linear contours and areas was tested for the construction site of a technical maintenance station during the installation of column foundations. The experiments revealed that the maximum error value ranged from 1 to 3 GSD, indicating the feasibility of performing a preliminary accuracy assessment of low-cost UAV data based on the camera’s resolution parameter. The study’s findings have significant implications for the field of UAV technology, as they can help pave the way for the development of more efficient and reliable data collection techniques. Moreover, the research can provide valuable insight into improving the accuracy of UAV data processing, which can have a considerable impact on fields such as surveying, mapping, and remote sensing. By expanding our understanding of the accuracy of UAV data, we can unlock new opportunities for scientific research and exploration, leading to advances in various fields.

The paper focuses on GIS use for the restoration of forest roads while considering biodiversity conservation. It addresses the challenges posed by road infrastructure in forest ecosystems, emphasizing the negative ecological impacts caused by roads. The research highlights the importance of integrating ecological data and infrastructure planning to achieve sustainable development of the territory. The authors present survey results from the roundtable discussion “Social Dialogue. Environmental Impact Assessment (EIA) in Ukraine” and propose the algorithm of the electronic calculator for environmental impact assessment digitization.

In the geodetic industry, the requirements for accuracy and time of positioning are among the most important aspects necessary for the effective and reliable implementation of projects. In addition, the development of reference stations in Poland increases the functionality of GNSS equipment using various global satellite groups, the reception modules of which are constantly developing and providing more accurate coordinates in the spatial system. The purpose of this work is to study the accuracy of the precise positioning of fixed points using the GNSS RTK measurements method of various fully working and functioning global satellite systems using VRS (Virtual Reference Station) that sends correction data through the stream RTN4G_VRS_RTCM3.2. The analysis of accuracy is performed by a fixed criterion that determines the value of the cut-off angle, which reflects the results of practical GNSS RTK-measuring in real time for conducive (CA=10°), moderate (CA=30°) and complex (CA=45°) terrain. For testing to maintain high accuracy, only Fix type measurements are considered. From the point of view of the types of solutions obtained during the GNSS positioning, three systems showed a similar level. As a result of measurements, BeiDou, GPS and Galileo had a conducive Fix solution about 80%. GLONASS demonstrated the worst result, where the measurement of such quality is less than 50%. Nowadays the most stable is the GPS satellite system.

The possibility of calculating angular values from linear measurements with an accuracy that can compete with their measured values is considered and investigated. Since in many cases such a definition is almost the only possibility of setting the values of angular parameters, for example, when it is placed in space. The proposed method of increasing the accuracy of calculations by changing the location of the total station, which makes it possible to change the lengths of the sides of the triangle, and as a result, the amount of error in the calculation of angular values. With the help of mathematical modeling, in each case, the placement parameters of the device and markers defining the desired angle are pre-set to ensure the required accuracy. To illustrate the methodology, a numerical experiment is presented that shows the necessity of such an approach and the possibility of practical application. The results of mathematical modeling given in the tables allow placing the total station in a position that ensures the established accuracy.