Sah, RK and Nagesh Kumar, D and Das, AK (2022) Avulsion distribution on rivers in the Himalayan foreland region. In: Hydrological Sciences Journal, 67 (14). pp. 2175-2190.
Full text not available from this repository.Abstract
Despite recent advances, we still do not have a synoptic dataset on river avulsion across a mountain foreland belt. Here we report a novel account of chronological avulsion records (for the period 1990–2019) across the Himalayan foreland region (HFR), one of the largest and most avulsion-hit areas in the world. The chronological records discerned river avulsion frequency and distribution across HFR. We identified the eastern Brahmaputra plains as amongst the most avulsion-affected areas in HFR. As many as 19 tributaries across HFR have recorded ≥ 6 avulsion events. Most of these avulsion-affected rivers are smaller, with hilly catchments < 500 km2. These avulsions often occurred near the proximity of the Himalayan front. Transitional reaches (and adjacent braided/meandering sections) of the tributaries have experienced higher avulsions. Observation suggests that the 1950 Assam earthquake, non-incised channels, and rapid transition in tributaries’ morphologies are decisive in the region’s frequency and distribution of river avulsions.
| Item Type: | Journal Article |
|---|---|
| Publication: | Hydrological Sciences Journal |
| Publisher: | Taylor and Francis Ltd. |
| Additional Information: | The copyright for this article belongs to Taylor and Francis Ltd. |
| Keywords: | Catchments; Earthquakes, 1950 assam earthquake; Affected area; Alluvial plains; Avulsion frequency; Brahmaputra; Channel transition; Ganga�brahmaputra alluvial plain; Himalayan foreland river; Non-incised channel; River avulsion frequency, Rivers |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 04 Jan 2023 05:33 |
| Last Modified: | 04 Jan 2023 05:33 |
| URI: | https://eprints.iisc.ac.in/id/eprint/78700 |
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