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Title
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Influence of structural lineaments on drainage morphometry in Qorveh-Dehgolan basin, Kurdistan, Iran
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Type
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JournalPaper
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Keywords
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Drainage Morphometry; Landsat 8; Lineaments; Gram-schmidt Pan-sharpening; Convolution Directional Filter; Qorveh-dehgolan Basin; SWAT Model
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Abstract
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In the current study, a combination of automated lineament extraction from Landsat 8 satellite imagery and 3D interactive visual interpretation (using DEM) alongside image processing techniques (Gram-Schmidt pan-sharpening, convolution directional filter) was carried out to investigate expression and influence of tectonic activity on drainage morphometry within Qorveh-Dehgolan basin. The watersheds, derived from burned DEM using SWAT, were categorized into high and low-altitude watersheds depending on the associated relief. Analysis of spatial relationship of lineament density with drainage density and basin slope revealed that structural lineaments have a decisive control over drainage density distribution particularly at higher basin slopes of certain watersheds. These high-altitude watersheds, associated with more-resistant lithology, were also found to cover higher percentage of total lineaments compared to the lower-altitude watersheds associated with less-resistant lithology. The analysis presented significant insights into the influence of tectonic activity on drainage network in a relatively unexplored area and provided vital baseline information for future investigations.
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Researchers
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Kamran Chapi (Fourth Researcher), Saumitra Mukherjee (Third Researcher), Amit Singh (Second Researcher), Payam Sajadi (First Researcher)
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