Lineament analysis of digital elevation model to identification of geological structure in Northern Manna Sub-Basin, Bengkulu

Fajri, SN; Surtiyono, E; Nalendra, Stevanus

doi:10.1088/1757-899x/636/1/012001

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Meanwhile, when viewed from morphology and process that takes place then the area with higher elevation will serve as a place of rain entry into the soil and into the water aquifer The fault line can be recognized from the flow of river flows firmly and evidenced by looking at the Digital Elevation Model (Fajri et al, 2019). Figure 1 shows the location with the topography map and brown line as a border the research area based on landforms.…”

Section: Study Areamentioning

confidence: 99%

Assessment of the groundwater recharge potential areas using GIS in Kajor Kulon Hamlet, Selopamioro, Imogiri, Bantul, Yogyakarta

Saputra

Yudono²,

Partoyo³

2020

JGLITrop

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Groundwater balance occurs in the presence of recharge and discharge. The process of entering the water in soil takes place with an infiltration-percolation to aquifers. The groundwater recharge area is identified by lithology, land use, slope, rainfall, land, and landform. Kajor Kulon Hamlet, Selopamioro Village, Imogiri Sub-district, Bantul Regency, Special Region of Yogyakarta becomes an area with hilly morphology, active fault areas, and including drought-prone regions. Change of the land function in hilly areas by making settlements and un-irrigation field for farming may cause decreased ability as a recharge area. Research aim sare to assessing, determining, and analyzing the conditions of the establishment in the research area. The variables used include land use, the slope of the land, rainfall, and soil texture as thematic maps to analysis its land ability. Data collection methods are measurement, inquiry, and mapping. Furthermore, the method of analysis is based on the Geographic Information Systems (GIS) with scoring-weighted overlay method. The results showed the classification of the between low, medium, and high. The medium class is currently occupying 67% of the area in the research area with an area of 719,916.03 m 2. The distribution of each class is expressed through the groundwater recharge area map. The GIS is very efficient and effective in facilitating groundwater recharge area analysis.

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Section: Study Areamentioning

confidence: 99%

Assessment of the groundwater recharge potential areas using GIS in Kajor Kulon Hamlet, Selopamioro, Imogiri, Bantul, Yogyakarta

Saputra

Yudono²,

Partoyo³

2020

JGLITrop

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“…These are topographic and airborne magnetic data. Hillshade maps produced from Shuttle Radar Topography Mission (SRTM), digital elevation model (DEM) has been used in several published research papers to delineate surface structures which are reflections of subsurface geologic structures [4][5][6][7]1,[8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Surface and Subsurface Structural Mapping of Lokoja Central Nigeria Using Airborne Magnetic and Remote Sensing Data

A. F.,

M.D

2024

AIR

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The main goal of this research is to evaluate the surface and subsurface structural framework of Lokoja and its surroundings using airborne magnetic and Shuttle Radar Topographic Mission (SRTM) data by applying image processing techniques. To explicate our aim, the residual magnetic intensity (RMI) data was reduced to a magnetic pole (RTP) to centre the anomalies above their causative source after which, the data was subject to the first vertical derivative filter and 3D Euler deconvolution method with structural index (SI =1) where the subsurface structures were delineated, using Oasis Montaj software. Four (4) shaded relief images were created with light sources emanating from four different directions to identify linear terrain features in the SRTM data at a solar azimuth of 0° and a solar elevation of 45°. Others 90°, and 135° followed by creating a composite shaded relief image of all four. The PCI Geomatica edge detection algorithm was applied to the composite shaded relief image produced. After thresholding and filtering processes, structural lineaments were extracted from the edges of the image by subjecting it to the line algorithm of PCI Geomatica. ArcGIS v10.7.1 was used to assign geometry to both magnetic and SRTM structures delineated. The resulting structural lineaments were subjected to Rockworks where a rose diagram that depicts structural trends within the study area was produced. The lineaments delineated allow us to decipher that the area is dissected by numerous subsurface and surface linear structures and these lineaments trend predominantly in the NE-SE, WSW-ENE, NW-SE, and NNE-SSW directions. Overlying the lineaments drawn from the pair of data sets showed several sites of structural coincidence that are thought to be structural continuation locations where subsurface fluids such as water will migrate directly to the surface.

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“…The detection of geomorphological features is often based on aerial photographs, satellite images, and shaded relief images created from digital elevation models (Abdullah et al, 2010;Prasad et al, 2013;Salui, 2018). Various scholars (Abdullah et al, 2010;Salui, 2018;Fajri et al, 2019) have used digital elevation models for tectonic geomorphological studies and lineaments.…”

Section: Lineament Extractionmentioning

confidence: 99%

Surface water – groundwater interactions: A case of a shallow semi-closed lake catchment in northern Tanzania

Okwir

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Conjunctive use of surface water and groundwater is rapidly growing in many developing countries as an adaptation strategy to climate variability and change. However, the interactions between the groundwater and the surface water systems are not adequately understood, especially among the East African rift valley lakes, where data paucity has limited studies and reporting on the spatial influence of catchment heterogeneity. In its humble contribution to sustainable water development, this study aimed to present a platform for understanding the influence of climatic variation and anthropogenic activities on surface water–groundwater interactions. To be relevant locally, Lake Babati, a freshwater lake in Northern Tanzania that provides the community with fish, freshwater, and a habit for hippopotamus, was studied. The study applied hydrological simulation, grey relational analysis, and stepwise regression analysis to model the hydrological behaviour of the lake. Further, it used hydrogeochemistry and environmental isotopes to identify groundwater fluxes and draw the conceptual understanding of surface water – groundwater interaction and applied topography-based indices to spatially map groundwater potentials within the catchment. The results showed that Lake Babati level is significantly declining (p-value < 0.01) at a rate of 25 mm per annum. The lake level decline could not be explained by climatic variability since the decline occurred when both evaporation and rainfall showed no significant changes either seasonally or annually. Instead, the consistent decline of the lake level in all seasons could be due to the expansion of the spillway, which effectively lowered the lake reservoir level and increased the lake outflow in rainy seasons. The hydro-geochemistry and isotopes data showed that the lake water and groundwater interact and are in hydraulic connections. Further, using Height Above Nearest Drainage based and Topography Wetness Index based methods, the study developed two groundwater potential maps to predict groundwater spatial variability and guide groundwater prospecting efforts and subsequent development. Given that Lake Babati is in a hydraulic connection with the groundwater, its consistent decline will likely impact the groundwater system. Similarly, abstracting groundwater at unsustainable rates could lower the lake levels further. Therefore, integrated water resources management is required for sustainable water resources development and management in the catchment. Mandatory and continuous monitoring of the water resources (groundwater levels, river flows, and lake levels) is recommended to generate quality in situ data for future studies.

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Lineament analysis of digital elevation model to identification of geological structure in Northern Manna Sub-Basin, Bengkulu

Cited by 5 publications

References 11 publications

Assessment of the groundwater recharge potential areas using GIS in Kajor Kulon Hamlet, Selopamioro, Imogiri, Bantul, Yogyakarta

Assessment of the groundwater recharge potential areas using GIS in Kajor Kulon Hamlet, Selopamioro, Imogiri, Bantul, Yogyakarta

Surface and Subsurface Structural Mapping of Lokoja Central Nigeria Using Airborne Magnetic and Remote Sensing Data

Surface water – groundwater interactions: A case of a shallow semi-closed lake catchment in northern Tanzania

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