scholarly journals Applying the combination of GIS tools with upgraded structural and morphological methods for studying neotectonics

2021 ◽  
pp. 93-103
Author(s):  
I. Yu. Chernova ◽  
◽  
D. K. Nourgaliev ◽  
O. S. Chernova ◽  
O. V. Luneva ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Stream Network ◽  
Vertical Movements ◽  
Geoinformation Systems ◽  
Small Areas ◽  
Local Structures ◽  
Gis Tools ◽  
Digital Elevation ◽  
Oil Deposits ◽  
Improved Technique

Structural and geomorphological methods are often applied to the search for small oil-producing structures. Morphometric analysis of digital elevation models has proved to be the most informative one. Morphometric surfaces can be used to evaluate the direction and amplitude of vertical movements, to outline local and regional neotectonic structures and assess their petroleum saturation. This paper shows how to enhance the traditional morphometric analysis with GIS (geographic information systems) tools. A manifold increase in the efficiency of morphometric analysis takes it to a qualitatively new level. Setting specific parameters for some geoprocessing tools (for example, stream network tools) can be very important when studying local structures in small areas. In case of large territories, the output result is almost independent of the calculation errors. The improved technique proposed in this paper was tested on a large territory located in the Volga region. As a result, high-order morphometric surfaces were obtained, which was not possible before. In addition, a statistically significant relationship was discovered between morphometric surfaces and distribution of oil deposits, which can be considered a reliable prospecting indicator in the Volga-Ural petroleum province. Keywords: neotectonics; structural and morphological methods; geoinformation systems; hydrocarbon potential assessment.

Assessment of Hydropower Potential Using Geospatial Technology in a Case Study of Guna-Tana Landscape Upper Abay Basin, Ethiopia

2020 ◽  
Author(s):  
Asirat Teshome ◽  
Yonas Tibebu ◽  
Endalkachew Addis
Keyword(s):  
Digital Elevation Model ◽  
Hydroelectric Power ◽  
Stream Network ◽  
Geospatial Technology ◽  
Gis Tools ◽  
Digital Elevation ◽  
Hydropower Potential ◽  
Elevation Model ◽  
Planning And Construction

Abstract Background: In this study, geospatial technology was used to assess potential sites for hydroelectric potential in the Ribb and Gumara Rivers of the Guna-Tana landscape of the upper Abay basin in Ethiopia. The important parameters used in this study were the Digital Elevation Model, the stream network, the stream elevation; the stream slope, the height difference, and the stream flow were analysed. In addition, the results obtained from the geospatial model, satellite data and GIS tools were used to identify the hydroelectric potential in the landscape. Results: Twenty sites with hydroelectric potential were identified within the 3528.16 km2 of the Guna-Tana landscape. The maximum power in the Ribb River was 48,389.98 kW, while in the Gumara River it was 41,984.01 kW. Therefore, the development of strategies to improve the decision-making process for hydroelectric power planning and construction is of utmost importance to support renewable energy production with minimal negative environmental social impacts. Conclusion: Therefore, this study revealed that the hydroelectric potential of a river basin could be correctly assessed using a digital elevation model, stream network data, within a GIS framework.

scholarly journals Geospatial Approach for Quantitative Drainage Morphometric Analysis of Varuna River Basin, India

2019 ◽  
Vol 12 (2) ◽  
pp. 1-25 ◽  
Author(s):  
Praveen Kumar Rai ◽  
Prafull Singh ◽  
Varun Narayan Mishra ◽  
Anisha Singh ◽  
Bhartendu Sajan ◽  
...  
Keyword(s):  
River Basin ◽  
Morphometric Analysis ◽  
Drainage Network ◽  
Stream Network ◽  
Basin Morphometry ◽  
Digital Elevation ◽  
Basin Geometry ◽  
Study Zone ◽  
Drainage Texture ◽  
Elevation Model

Abstract An assessment of Varuna river basin of India was performed to study the various drainage parameters in GIS platform. The delineation of drainage network is possible either physically from topographic sheets or with the help data of Digital Elevation Model (DEM) by methods for calculation techniques. Extraction of the basin and sub-basins, stream network has been produced to evaluate the drainage characteristics in the study zone. The entire Varuna river basin has been subdivided into 3 sub-watersheds and 41 morphometric parameters have been computed under four broad categories i.e. drainage network, basin geometry, drainage texture, and relief characteristics. The morphometric analysis has been performed and different parameters have been correlated with each other to understand their underlying connection and their role over the basin hydro geomorphology. The study discloses different types of morphometric analysis and how they influence the soil and topography of the basin. The investigation and estimation of basin morphometry and relief parameters in GIS will be of massive utility in catchment area advancement, understanding the watershed for natural resource evaluation, planning and administration at any scale. The outcomes thus generated equip us with significant knowledge and may also provide an input that are essential in decision making for watershed planning and drainage development of the watershed.

scholarly journals The methods morphometric analysis’ of basinal systems’ within mountain territories using GIS (case study of the Chornogora’s part of Prut’s basin)

2012 ◽  
Vol 2 (40) ◽  
pp. 68-90
Author(s):  
A. Marchak
Keyword(s):  
Key Words ◽  
Data Base ◽  
Digital Elevation Model ◽  
Morphometric Analysis ◽  
Software Package ◽  
Morphometric Parameters ◽  
Geoinformation Systems ◽  
Digital Elevation ◽  
Elevation Model

In the article is given the methods of fulfillment consecutive stages of the relief morphometric analysis of basinal systems' within mountain territories using software package ESRI ArcGIS Desktop 9.3 (case study of the Chornogora's part of Prut's basin). The results of fulfillment this algorithm is developed digital elevation model, range of analytical and synthetic morphometric maps and hypsographical profiles, circular charts, bar diagrams, plots and tables of relief's various morphometric parameters as well as apportionment for their further complex morphogenetical analysis. Key words: morphometric analysis of the relief, geoinformation systems, geoinformation data base, digital elevation models, morphometric parameters of the relief, analytical and synthetic morphometric maps.

scholarly journals MORPHOMETRIC ANALYSIS OF WADI DARNAH WATERSHED NE LIBYA, USING GIS TECHNIQUES

2021 ◽  
pp. 31-49
Author(s):  
Nouria El Hadi. A. Aboshaala
Keyword(s):  
Morphometric Analysis ◽  
Structural Control ◽  
Geological Structure ◽  
High Rate ◽  
Elongation Ratio ◽  
Drainage Pattern ◽  
Infiltration Capacity ◽  
Stream Network ◽  
Gis Techniques ◽  
Drainage Patterns

Wadi Darnah is about 586 km2 and lies in the northern portion of the Al Jabil AL Akhdar. The Wadi drains into the Mediterranean Sea. The present study incorporates a morphometric analysis of Wadi Darnah by using remote sensing and GIS techniques. Digital Elevation Model (DEM) and topographic sheets were processed in ArcGIS software. The study revealed that the drainage patterns of stream network from the basin are mainly of dendritic type which indicates homogeneity in texture and lack of structural control. The bifurcation ratio value of 4.53 indicates that the area is not much influenced by the geological structure and undisturbed drainage pattern. The study area is of the low density group basins (2.09 km-1). The elongation ratio (0.36), circularity ratio (0.14) and form factor (0.10) show elongated basin with steep relief, moderate discharge, and a long main channel. The basin has a high relief up to 850 m, which leads to a high rate of runoff but the effect of this water flow is reduced by the high infiltration capacity due to the high rate of karstification and karst features in the basin area.

scholarly journals Analysis of the relationships between the spatial arrangement of palaeovalleys and contemporary valleys of Central Poland in the light of GIS methods

2016 ◽  
Author(s):  
Aleksander Szmidt
Keyword(s):  
Digital Elevation Model ◽  
Spatial Arrangement ◽  
Central Poland ◽  
Gis Tools ◽  
Digital Elevation ◽  
Major River ◽  
Gis Methods ◽  
Elevation Model ◽  
River Valleys

The article presents an example of application of selected GIS methods for showing connections between the course of palaeovalleys and contemporary valleys in Central Poland. The analysed area was shaped in the conditions of environment as early as the Palaeogene and Neogene, but the greatest impact on the present-day landscape came from the morphogenetic processes which operated in the Quaternary.Palaeogeographic studies of the analysed area often point to the possible dependencies between the contemporary landscape and its substrate, particularly as regards the valley system. In order to verify this hypothesis, on the basis of archival cartographic materials and a Digital Elevation Model of the current terrain, a procedure for conducting analyses with the use of commonly available GIS tools was proposed. Results of the conducted analysis allow for stating that the major river valleys of Central Poland in large part correspond to the arrangement of the fossil valley system, and the relationships are most easily noticeable for the largest valleys.

scholarly journals Assessment of erosion risk of relief based on the digital modeling

2021 ◽  
Vol 27 (2) ◽  
pp. 241-252
Author(s):  
Mariya Kondrateva ◽  
Aleksey Chashchin
Keyword(s):  
Morphometric Analysis ◽  
Average Density ◽  
Erosion Risk ◽  
Temporary Streams ◽  
Erosion Hazard ◽  
Average Value ◽  
Aster Gdem ◽  
Digital Modeling ◽  
Digital Elevation ◽  
Elevation Model

On the basis of a digital elevation model (DEM) based on generalized data from USGS STRM DEM and ASTER GDEM with a resolution of 3″ with the help of GIS technologies, a morphometric analysis of the territory of the perm Territory at a scale of 1:2.5 million was carried out and a series of morphometric maps was created, as well as an assessment map of the erosion hazard of the relief. According to the results of morphometric analysis, the values of the index of vertical dissection of the relief in the region vary within the range of 0–623 m with an average value of 44 m. The steepness of slopes varies from 0 to 40° with average values of 3°. The horizontal dissection, determined on the basis of the thalweg network of permanent and temporary streams, varies in the range of 0.145–1.202 km/km2. Comparison of morphometric indicators in key areas with the data obtained by traditional methods of morphometric analysis revealed their coincidence at the level of gradations. The following geomorphological factions curtains: wide development of slope surfaces with elevation differences over 50 m and slopes exceeding 3°. According to the results of cartometric analysis, such conditions characterize 35 % of the region’s area. More than half of the region’s area (60 %) has an average density of erosional dissection of 0.5–0.8 km/km2, another 36 % of the area is characterized by moderate values of 0.2–0.5 km/km2. The calculated relief energy index has a value of 3–13 points; on its basis, 4 categories of relief erosion hazard were identified. In accordance with the results obtained, most of the perm Territory (63.0 %) is characterized by a low erosion hazardous relief, 36.6 % by a medium and highly erosion hazardous. The share of land, the relief of which is characterized by zero erosion potential, is 0.4 % of the region’s area.

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