Geomorphic characteristics of a bedrock river inferred from drainage quantification, longitudinal profile, knickzone identification and concavity analysis: a DEM-based study

Das, Sumit

doi:10.1007/s12517-018-4039-8

Cited by 23 publications

(11 citation statements)

References 52 publications

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“…Similar to this study, the correlation between area, elevation, streamflow, erosion rate, precipitation have already described in earlier studies (Milliman and Syvitski 1992;Einsele and Hinderer 1997). Hypsometry, the frequency distribution of elevation has been widely applied to resolve the problem of dissimilar erosion rates, tectonics and lithology control in fluvial as well as glacial landscapes (Strahler 1952;Montgomery et al 2001;Brocklehurst and Whipple 2004;Walcott and Summerfield 2008;Pedersen 2010;Perez-Pena et al 2009;Das 2018). This index is more complex than it describes.…”

Section: Discussionsupporting

confidence: 74%

“…Although morphometric analysis in local or catchment scale is very common (Sreedevi et al 2005;Mesa 2006;Thomas et al 2011;Magesh and Chandrasekar 2014;Kumar et al 2015;Pandey and Das 2016;Rawat and Mishra 2016;Dusan et al 2017;Radwan et al 2017;Das 2018;Das and Pardeshi 2018), the originality of this work lies behind the explanation of influence of the climate, lithology in morphometric variables. Moreover, influence of the variables which are reported as a major driving factors in other studies (Verstraeten and Poesen 2001;Molina et al 2008;Zhang et al 2015;Li et al 2019) are compared in understanding the association with erosion rate in peninsular India.…”

Section: Discussionmentioning

confidence: 99%

“…Geographic Information System (GIS) be governed by computer programs are often used for ease analysis of large geo-spatial database for saving, controlling information about the modern sciences of geography, geology and environment (Sabins 2000;Abboud and Nofal 2017;Das 2018). Shuttle Radar Topographic Mission (SRTM) derived Digital Elevation Model (DEM) of 3 arc-second (90 m) data was acquired from CGIAR official portal (http://srtm.csi.cgiar.org/).…”

Section: Methodsmentioning

confidence: 99%

“…In fluvial landscape, the hypsometric curves and integrals are widely studied to understand the complex evolution of the topography. Hypsometry is very often computed using the hypsometric curve, the cumulative histogram of elevation within a catchment or a region (Strahler 1952;Brocklehurst and Whipple 2004;Egholm et al 2009;Das 2018). The hypsometric integral is the area lying below the hypsometric curve.…”

Section: Hypsometric Curve and Integralmentioning

confidence: 99%

“…In recent decades, with the technological evolution and Geographical Information System (GIS), quantitative geomorphology has become much easier, less tedious and precise (Das 2018). Introduction of high resolution Digital Elevation Models (DEM) made it conceivable to delineate and examine the catchment parameters in programmed manner in GIS environment, which has enabled to explore a large amount of data on landscape variables (Das 2019a, b).…”

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confidence: 99%

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Landscape variables in the Indian (Peninsular) catchments: insights into hydro-geomorphic evolution

Das¹

2019

Preprint

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The river systems in peninsular India are remained unexplored in terms of hydro-geomorphic evolution, though a few works are carried out in order to understand the tectonic and structural evolution with paleoclimate. Morphometric analysis at catchment scale delivers insights into the dynamics, erosion capacity, probability of flood occurrence, lithological and structural control, and genetic response to the tectonics. The present study aimed to characterize the hydro-geomorphic evolution of 12 major catchments in Peninsular India via morphometric analysis. A total 25 morphometric parameters were computed and several statistical analyses performed in establishing the inter-correlation and making classification of Indian rivers. The results indicated that most of the rivers in peninsular India are 7th to 9th order catchments. A high variability of the rainfall was observed in these rivers where the northern catchments experience higher amount of precipitation contrasting to the southern basins. Almost all the basins showed a moderate relief ratio, hypsometric integral, ruggedness etc. Cauvery, Baitarni, and Brahmani showed exceptionally steeper gradient, high relief ratio, LS factor, and ruggedness index which may indicate higher erosion potential. A positive association between erosion rate and hypsometric integral was observed. All these rivers were classified in three categories based on cluster analysis where the medium and large sized catchments formed different groups. Despite of the extensive data and statistical analysis, the outcomes of this study are highly general due to large scale variation in lithology and climate. In foreseeable works dealing with such morphometric variables, a higher resolution sub-catchment scale analysis would be required for a better description of the hydro-geomorphic response of these large catchments in peninsular India.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Hypsometric Curve and Integralmentioning

confidence: 99%

mentioning

confidence: 99%

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Landscape variables in the Indian (Peninsular) catchments: insights into hydro-geomorphic evolution

Das¹

2019

Preprint

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Assessing channel morphology and prediction of centerline channel migration of the Barak River using geospatial techniques

Annayat

Sil

2020

Bull Eng Geol Environ

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GIS and DEM based analysis of incision and drainage reorganization of the Buyuan River basin in the upper Lancang-Mekong of China since the Late Pleistocene

Fan

Yang

2020

J. Geogr. Sci.

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River incision and drainage reorganization have an important impact on the site selection of many major projects including city, road and others, and are the key issues of Quaternary environmental changes. Studies of river incision and river-network adjustment have traditionally been based on extensive field evidence, such as sediment age and beheaded river system. The Buyuan River basin is a large sub-basin of the upper Lancang-Mekong, with high mountains and extremely active erosion. The latter affects the preservation of the Quaternary period sediments leading to difficulties in understanding the main evolution characteristics of the basin. This study investigates differences in the equilibrium state of the longitudinal profile, infers incision rates, and evaluates drainage divide migration timelines using the stream-power incision model, the latest morphological dating, and Chi-plots (χ-z) based on digital elevation models (DEMs) on the GIS software platform. The final results show that two significant erosion base-level decreases occurred in the Late Pleistocene at least. The incision rate of the mainstream might have been 0-2.99 mm/yr since 100 ka BP and 0-3.28 mm/yr since 46 ka BP. The Chi-values across the divides suggest that space limited (or constrained) river reorganization and that there is no severe reorganization in the basin; the imbalance of traceable erosion only exists in local areas. The main driving force for the geomorphologic evolution of the Buyuan River basin is likely climate fluctuations rather than strong tectonic uplift since the Late Pleistocene.

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Geomorphic characteristics of a bedrock river inferred from drainage quantification, longitudinal profile, knickzone identification and concavity analysis: a DEM-based study

Cited by 23 publications

References 52 publications

Landscape variables in the Indian (Peninsular) catchments: insights into hydro-geomorphic evolution

Landscape variables in the Indian (Peninsular) catchments: insights into hydro-geomorphic evolution

Assessing channel morphology and prediction of centerline channel migration of the Barak River using geospatial techniques

GIS and DEM based analysis of incision and drainage reorganization of the Buyuan River basin in the upper Lancang-Mekong of China since the Late Pleistocene

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