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  Tectonically dominant surface denudation and topography in the Himalaya: Evidence from coupling between bedrock channel and valley hillslope topographies

Wang, A., Wang, G., Cao, K., Yuan, X., Shen, T., Wei, J. (2021 online): Tectonically dominant surface denudation and topography in the Himalaya: Evidence from coupling between bedrock channel and valley hillslope topographies. - Terra Nova.
https://doi.org/10.1111/ter.12552

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008229 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008229_1
Genre: Journal Article

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 Creators:
Wang, An1, Author
Wang, Guocan1, Author
Cao, Kai1, Author
Yuan, Xiaoping2, Author              
Shen, Tianyi1, Author
Wei, Jiangwei1, Author
Affiliations:
1External Organizations, ou_persistent22              
24.7 Earth Surface Process Modelling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_1729888              

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 Abstract: The Himalaya, a leading example of active mountains, is jointly shaped by intense tectonics, extreme climate and surface denudation. However, the causal relationship among these agents remains controversial. In this work, by an integrated analysis of bedrock channels and valley hillslopes using process-based models, we discover 3D-linear correlations in logarithmic space among precipitation-estimated stream discharge, channel gradients and valley hillslope gradients. This finding indicates that channel incision and hillslope denudation are dynamically coupled in sculpting the erosional topography in tectonically active domains of the Himalaya. The channel-hillslope coupling provides an independent approach to quantify key parameters of erosional models. Surface denudation indices simulated along streams and in drainage basins present a regular arrangement of high- and low-denudation zones across the Himalaya, which coincides well with available thermochronological and structural data and thereby supports a tectonic dominance on surface denudation rates and topography over medium-long timescale.

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Language(s): eng - English
 Dates: 2021-08-26
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1111/ter.12552
GFZPOF: p4 T5 Future Landscapes
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Title: Terra Nova
Source Genre: Journal, SCI, Scopus
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals473
Publisher: American Geophysical Union (AGU)