Process inference from topographic fractal characteristics in the tectonically active Northwest Himalaya, India

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dc.contributor.author Sahoo, Ramendra
dc.contributor.author Singh, Rishi Narain
dc.contributor.author Jain, Vikrant
dc.date.accessioned 2020-09-16T07:43:48Z
dc.date.available 2020-09-16T07:43:48Z
dc.date.issued 2020-08
dc.identifier.citation Sahoo, Ramendra; Singh, Rishi Narain and Jain, Vikrant, "Process inference from topographic fractal characteristics in the tectonically active Northwest Himalaya, India", Earth Surface Processes and Landforms, DOI: 10.1002/esp.4984, Aug. 2020. en_US
dc.identifier.issn 0197-9337
dc.identifier.issn 1096-9837
dc.identifier.uri 10.1002/esp.4984
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5703
dc.description.abstract Topography evolves under the coupled effect of exogenic and endogenic governing factors, and their scale?(in)variant dynamics. This results in a self?affine topography across a finite range, with a characteristic fractal dimension. Fractal analysis has been used to classify geological terrains having distinct litho?tectonic settings. However, process?based understanding of the fractal behaviour of a natural landscape is still limited. The current study aims to substantiate and expand upon the present knowledge of topographic response to the complex actions of the governing factors using fractal characteristics. We examined the association between the litho?tectonic, climatic settings, and the fractal characteristics of the topography in the tectonically active Northwest Himalaya. Our analysis was carried out in three separate sectors having diverse litho?tectonic settings. We used the roughness?length method to calculate the fractal parameters (fractal dimension, D; ordinate intercept, q). The Higher and the Lesser Himalaya were found to be characterized by low D and high q, while the tectonically active Sub Himalaya was found to have moderate D and low q. The southernmost foreland alluvial plains were characterized by high D and low q. Clusters of the fractal parameters were found to be consistent in spatial pattern across the three sectors. Our results showed that the geological?geomorphological settings and the associated processes (e.g., uplift, erosion, and diffusion) can be well inferred using the fractal characteristics of the topography. Further, our results implied the first?order control of lithology in sustaining and shaping the topographic geometry (both its amplitude and texture) in the tectonically active Northwest Himalaya. Spatial distribution of the fractal parameters also suggested the secondary control of tectonic uplift and, to a much lesser extent, mean annual rainfall on the topographic geometry. These results collectively point to the role of complex actions of the governing factors in the landscape evolution process.
dc.description.statementofresponsibility by Ramendra Sahoo, R.N. Singh and Vikrant Jain
dc.language.iso en_US en_US
dc.publisher John Wiley and Sons en_US
dc.title Process inference from topographic fractal characteristics in the tectonically active Northwest Himalaya, India en_US
dc.type Article en_US
dc.relation.journal Earth Surface Processes and Landforms


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