Geospatial-based tectono-morphometric analyses of the drainage system in the Chengi and Myinee River basins in the Chittagong Hill Tracts, Bangladesh

• DOI: 10.1016/j.geogeo.2023.100224
• Publication Date: 2023-09-06T16:19:53Z
• Authors: Abdul Mohaimen; Biswajit Nath; Md. Ragib Hasan
• Keywords: Sinuosity; Neotectonics; Landform

Neotectonics is a major factor for controlling landform development in tectonically active Chittagong Tripura Fold Belt (CTFB) region, along the western flank of Indo-Burma ranges. Morphotectonic parameters are excellent indicators landscape morphology evaluation to highlight past and ongoing tectonic processes region. To investigate matter, different morphometric indices such as linear, areal, relief were quantified using Digital Elevation Model (DEM) data its attributes Chengi River Basin (CRB) Myinee (MRB) CTBF. All computations characteristics visualization performed Geographical Information System (GIS) statistical platforms. The CRB MRB identified fifth fourth-order basins with total area 503.53 km2 267.28 km2, respectively which have low drainage frequency. Bifurcation ratio (Rb) value both these indicative structural control. TSI controls upper course rivers variations been observed year-wise Topographic Sinuosity Index (TSI) distribution. Asymmetry Factor (AF) indicates that tilting towards side, whereas eastern side. Moreover, two elongated nature activity Google earth (GE) seamless mosaic image-based longitudinal profiles significant deformation their courses. In addition, moderate Hypsometric Integral (HI) shows convex shape lower portion, might be related upliftment fault or perhaps an associated recent folding. overall results indicate presence activity. Therefore, morphotectonic analyses DEM, Landsat satellite data, GE found useful this study could considered ideal tool any complex basin study.