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| Article Name : | | | Quantification Of Areas Of Differential Rock Uplift Rates Using Steepness Index In The Lanja Region From Southern Konkan Coastal Belt, Maharashtra, India. | | Author Name : | | | V. M. Dikshit | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | GRT-5501 | | Article URL : | |  | Author Profile View PDF In browser | | Abstract : | | | The mega-feature of the Western Ghat located at passive continental margin of West Coast of India is considered to be neotectonic resurgence. Many geoscientists have postulated or derived sustained uplift along escarpment as well as in the Konkan lowland. The stream gradient is very sensitive to rock uplift rate. The Digital Elevation Model of the landscape from southern Konkan Coastal Belt helped us to derive quantitative estimates of spatial variation in uplift rate directly from digital topographic data. Longitudinal profiles of two major rivers (Kajali and Machkundi) and their tributaries, have been investigated to understand the spatially variable uplift rates on the concavity () of the bedrock rivers. The longitudinal profile of graded stream is typically concave-up. Areas that are undergoing faster surface uplift are identified by high normalized steepness index (Ksn) values. The study area lies under seismic zone IV. The area around Lanja had experienced few numbers of seismic events of moderate magnitude. | | Keywords : | | |
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