Home > Archive>Volume 98, Issue 5, 2024 >1376-1393. DOI:10.1111/1755-6724.15207
PDF HTML XML Export Cite reminder
CSTR:
[cstr]
Author:
Fund Project:

This work is granted by the National Natural Science Foundation of China (Grant Nos. U2244227 and U2244226), the National Key R&D Program of China (Grant No. 2022YFC3004301), and China Geological Survey Project (Grant No. DD20230538).

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    Rock-ice avalanches have frequently occurred in the Eastern Himalayan Syntaxis region due to climate change and active tectonic movements. These events commonly trigger catastrophic geohazard chains, including debris flows, river blockages, and floods. This study focuses on the Zelongnong Basin, analyzing the geomorphic and dynamic characteristics of high-altitude disasters. The basin exhibits typical vertical zonation, with disaster sources initiating at elevations exceeding 4000 m and runout distances reaching up to 10 km. The disaster chain movement involves complex dynamic effects, including impact disintegration, soil-rock mixture arching, dynamic erosion, and debris deposition, enhancing understanding of the flow behavior and dynamic characteristics of rock-ice avalanches. The presence of ice significantly increases mobility due to lubrication and frictional melting. In the disaster event of September 10, 2020, the maximum flow velocity and thickness reached 40 m/s and 43 m, respectively. Furthermore, continuous deformation of the Zelongnong glacier moraine was observed, with maximum cumulative deformations of 44.68 m in the distance direction and 25.96 m in the azimuth direction from March 25, 2022, to August 25, 2022. In the future, the risk of rock-ice avalanches in the Eastern Himalayan Syntaxis region will remain extremely high, necessitating a focus on early warning and risk mitigation strategies for such basin disasters.

    Reference
    Related
    Cited by
Get Citation

GAO Shaohua, YIN Yueping, LI Bin, GAO Yang, ZHANG Nan, ZHANG Tiantian, GAO Haoyuan, LIU Xiaojie.2024.[J]. Acta Geologica Sinica(),98(5):1376-1393

Copy
Related Videos

Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 13,2024
  • Revised:July 28,2024
  • Online: October 25,2024
Article QR Code
You are the Visitors
Governing Body：China Association for Science and Technology
Organizer：Geological Society of China
Address：No. 26 Baiwanzhuang Street, Xicheng District, Beijing 100037, China
Phone：010-68999024

京公网安备 11000002000088号 | 京ICP备11041704号
® 2025 All Rights Reserved