Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 13, issue 4
Articles | Volume 13, issue 4
https://doi.org/10.5194/esurf-13-531-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-13-531-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 4
Research article
 | 
08 Jul 2025
Research article |  | 08 Jul 2025

Sediment aggradation rates in Himalayan rivers revealed through the InSAR differential residual topographic phase

Jingqiu Huang and Hugh D. Sinclair

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Short summary
We develop a novel approach based on satellite radar images to quantify millimetre-scale sedimentation during monsoon floods over a 15 km stretch of four rivers, from the Himalayan mountain front to the gravel–sand transition. The results show how sediment accumulates more rapidly near the mountain front and decreases downstream, while the floodplain sinks. This method can improve river monitoring, enhance flood prediction, and benefit communities at risk of flooding in Nepal and India. 
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