Evidence of topographic disequilibrium in the Subarnarekha River Basin, India: A digital elevation model based analysis

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dc.contributor.author Guha, Shantamoy
dc.contributor.author Patel, Priyank Pravin
dc.date.accessioned 2017-12-06T05:29:05Z
dc.date.available 2017-12-06T05:29:05Z
dc.date.issued 2017-10
dc.identifier.citation Guha, Shantamoy and Patel, Priyank Pravin, "Evidence of topographic disequilibrium in the Subarnarekha River Basin, India: A digital elevation model based analysis", Journal of Earth System Science, DOI: 10.1007/s12040-017-0884-1, vol. 126, no. 7, Oct. 2017. en_US
dc.identifier.issn 0253-4126
dc.identifier.issn 0973-774X
dc.identifier.uri http://dx.doi.org/10.1007/s12040-017-0884-1
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3312
dc.description.abstract Cratonic areas experience complex process-response changes due to their operative endogenic and exogenic forces varying in intensity and spatiality over long timescales. Unlike zones of active deformation, the surface expression of the transient signals in relatively tectonically stable areas are usually scant. The Subarnarekha River Basin, in eastern India, is a prime example of a Precambrian cratonic landscape, overlain in places by Tertiary and Quaternary deposits. A coupled quantitative-qualitative approach is employed towards deciphering tectonic and geological influences across linear and areal aspects, at the basin and sub-basin scale. Within this landscape, the transient erosional signatures are explored, as recorded in the disequilibrium conditions of the longitudinal profiles of the major streams, which are marked by a number of waterfalls at structural and lithological boundaries. Mathematical expressions derived from the normalized longitudinal profiles of these streams are used to ascertain their stage of development. Cluster analysis and chi plots provide significant interpretations of the role of vertical displacements or litho-structural variations within the basin. These analyses suggest that a heterogeneous, piece-meal response to the ongoing deformation exists in the area, albeit, determining the actual rate of this deformation or its temporal variation is difficult without correlated chronological datasets.
dc.description.statementofresponsibility by Shantamoy Guha and Priyank Pravin Patel
dc.format.extent vol. 126, no. 7
dc.language.iso en en_US
dc.publisher Indian Academy of Sciences en_US
dc.subject Neotectonics en_US
dc.subject longitudinal profile en_US
dc.subject DEM morphometry en_US
dc.subject geological structure en_US
dc.subject stream response en_US
dc.title Evidence of topographic disequilibrium in the Subarnarekha River Basin, India: A digital elevation model based analysis en_US
dc.type Article en_US
dc.relation.journal Journal of Earth System Science


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