Contribution of SAR/RADARSAT-1 and ASAR/ENVISAT images to geological structural mapping and assessment of lineaments density in Divo-Oume area (Côte d’Ivoire)

Tagnon, Bertrand Ouessé; Assoma, Vincent Tchimou; Mangoua, Jules Mangoua Oi; Douagui, Aristide Gountôh; Kouamé, Fernand Koffi; Savané, Issiaka

doi:10.1016/j.ejrs.2018.12.001

Cited by 11 publications

(12 citation statements)

References 15 publications

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“…The use of remote sensing for lineament mapping has been widely used around the world and in West Africa and significant results have been obtained [3,17,15,16,17,19]. These results made it possible to improve the success rate of wells in these areas.…”

Section: Discussionmentioning

confidence: 99%

“…Lineaments validation consisted in comparing and emphasizing possible matches between directions of lineaments mapped from radar images and those from previous works [7,14]. Next, we superimposed the lineament map on the map of boreholes with a flow rate greater than or equal to 5 m 3 /h, which were considered as productive boreholes because they are supposed to have encountered or are closer to a fracture [27,28,19].…”

Section: Lineaments Validationmentioning

confidence: 99%

“…One of the major drawbacks of passive remote sensing is linked to the very quality of images in humid tropical zones, due to frequent cloudy atmospheric conditions that make it difficult to detect lineaments [18]. Consequently, radar images that have shown their ability to extract on a large scale and map lineaments appear to be the most suitable [19]. In addition, they use radar waves, which are more suitable for humid tropical areas since they are not affected by atmospheric scattering.…”

Section: Introductionmentioning

confidence: 99%

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Contribution of Sentinel Radar Images 1Ato the Extraction of Lineaments from the Lobo Watershed (Center-West of the Ivory Coast)

Kouadio

Dibi

Mangoua

et al. 2020

JGEESI

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The improvement of the conditions of access to drinking water for the populations of the Lobo watershed requires the exploitation of groundwater because of the surface water which remains exposed to climatic hazards and the impacts of anthropic activities. And yet, these underground waters finds himself bedrock aquifer which are complex aquifers. Thus, the objective of this study is to characterize those fissure aquifers that who govern underground run-off in the aquifer system of the Lobo catchment area. The methodology adopted consisted in using 1A sentinel radar images to map fractures and their spatial distribution. The validation of the lineaments first consisted in comparing and highlighting the lineaments from the radar images and the fractures revealed from photo-geological images. Next, we superimposed the map of lineaments on the map of boreholes with a flow rate greater than or equal to 5 m3/h, which were considered as productive boreholes. To determine the traffic corridors, this fracturing map was superimposed on the piezometric map. This work made it possible to extract 9,753 lineaments over a surface area of 7,000 km². The various validation techniques enabled us to confirm 121 major fractures with an average length of 9 km. In addition, the most productive boreholes are located on average less than 300 m from the fractures. The analysis of the distribution of the orientations of these fractures revealed a heterogeneity of direction and a predominance of the N-S; NW-SE and NE-SW families. The Fracturing density maps and density of the number of fracture crossing points highlight the spatial heterogeneity of the fracture network which is controlled by geomorphology, geological formations and lithological contacts. The river Lobo and its main tributary the Dé, flow preferentially in fractures. This river and its tributary drains the aquifer system. The results obtained from different thematic maps are useful for the realisation of future high-yield hydraulic wells (Q ≥ 5 m3/h).

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Section: Discussionmentioning

confidence: 99%

Section: Lineaments Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contribution of Sentinel Radar Images 1Ato the Extraction of Lineaments from the Lobo Watershed (Center-West of the Ivory Coast)

Kouadio

Dibi

Mangoua

et al. 2020

JGEESI

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“…The application of those methods leads to the elaboration of the detailed card and the validation of the Baya fractures watershed. For more information about the methods principles, their application and about the validation procedure of the fracture card, we invite the readers to check the documents of [24,5,25,26,16,10,27,17]. This path is indicated in the figure.…”

Section: Fig 1 Map Of the Study Areamentioning

confidence: 99%

“…The fracture study is then the preliminary phase for groundwater reservoirs. Some works [13, [14,15,16,10] have shown that fracture field from satellite pictures reveal interesting information thanks to its synoptic vision and especially to the diverse techniques for processing digital pictures of high quality [17]. Thus, remote sensing could be a good tool for studying fractures' networks for water resources assessment.…”

Section: Introductionmentioning

confidence: 99%

Remote Sensing and GIS Contribution for Groundwater Mapping Reservoirs in the Baya Watershed (Eastern Region of Côte d'Ivoire)

Mangoua

Kouassi

Douagui

et al. 2019

JGEESI

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This study is carried out in the Baya watershed in the eastern region of Côte d'Ivoire to highlight access to drinking water issue in the fratured areas of Côte d'Ivoire. It aims at mapping the groundwater reservoirs to optimize the future installment of new boreholes for a satisfactory success rate. For the methodological approach we use Landsat 7 satellite images to map fracture networks with the use of the directional filtering technique. The induced permeabilities from these fractures were calculated using Fanciss’s method. The multicriteria analysis and Hydrogeological Information System with Spatial Reference were adopted to map groundwater reservoirs. Structural mapping by remote sensing permitted the development of detailed fractures maps with more than 6,998 listed fractures responsible for the formation of fracture aquifers in the Baya watershed. The size of these fractures is spread over two orders of magnitude. The main orientations are NE-SO (N70-80), corresponding to the Eburnean orientations, E-O (N90-100) and NO-SE (N100-120), associated with the Liberian orientation. Induced permeabilities vary from 1.20.10-8 to 4.62.10-5 m/s with a regional average of about 5.32.10-6 m/s. The zones with strong induced permeabilities that coincide with those of high fracturing densities brought us to have five reservoirs in the basin, with two large reservoirs, two media and three small ones. This groundwater flows into the mainstream waters from two main directions.

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Data Integration for Lithological Mapping Using Machine Learning Algorithms

Manap

San

2022

Earth Sci Inform

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Contribution of SAR/RADARSAT-1 and ASAR/ENVISAT images to geological structural mapping and assessment of lineaments density in Divo-Oume area (Côte d’Ivoire)

Cited by 11 publications

References 15 publications

Contribution of Sentinel Radar Images 1Ato the Extraction of Lineaments from the Lobo Watershed (Center-West of the Ivory Coast)

Contribution of Sentinel Radar Images 1Ato the Extraction of Lineaments from the Lobo Watershed (Center-West of the Ivory Coast)

Remote Sensing and GIS Contribution for Groundwater Mapping Reservoirs in the Baya Watershed (Eastern Region of Côte d'Ivoire)

Data Integration for Lithological Mapping Using Machine Learning Algorithms

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