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Hidden dangers of ice avalanches and glacier lake outburst floods on the Tibetan Plateau: identification, inventory, and distribution

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Abstract

Under the climate warming, the ice avalanches (IAs) and glacier lake outburst floods (GLOFs) will continue or even intensify in the future. In order to find out the number, spatial distribution, and characteristics of hidden dangers of IA and GLOF-prone lakes on the Tibetan Plateau (TP), the first inventory is presented. (1) The study has identified and analyzed 581 IAs and 369 GLOFs on the TP. IAs and GLOFs are widely distributed in the Tibet Autonomous Region (TAR), concentrating in the Yarlung Zangbo River basin and the Nyainqntanglha and Himalaya Mountain range. (2) Most of the IAs have an area of 0.1 ~ 1 km2. The IAs occur on vulnerable slopes ranging from 35 to 45°, with an elevation between 4500 and 5500 m and a north-friendly aspect. (3) Most of the GLOFs with a lake area of 0.1 ~ 0.3 km2 and a north-facing outburst direction are developed in an elevation range from 4500 to 5500 m. There are about half of the GLOF-prone lakes to be close to the front edge of the mother glaciers. (4) The front elevation of IAs changes regularly with the eastern Himalayan syntaxis region as the boundary. It generally increased from west to east on the west side, while a “V-shaped” trend first decreased and then increased, and decreased from south to north on the east side. (5) The IAs and GLOFs are mainly distributed in the southern and northwestern TP with “clustering” characters due to the topographical and climatic settings.

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Acknowledgements

Acknowledgement for the data providers: National Earth System Science Data Center, National Science & Technology Infrastructure of China (http://www.geodata.cn), National Cryosphere Desert Data Center (http://data.casnw.net), National Tibetan Plateau Data Center (http://data.tpdc.ac.cn), Tuxing Earth (http://www.tuxingis.com), United States Geological Survey (http://earthexplorer.usgs.gov), National Tibetan Plateau Data Center (http://data.tpdc.ac.cn), IACS and IPA Standing Group on Glacier and Permafrost Hazards in Mountains (http://www.gaphaz.org). The authors wish to thank the reviewers and the handling editor for their valuable comments, suggestions, and corrections for manuscript.

Funding

The authors acknowledge the financial support from the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0201), the National Natural Science Foundation of China (Grant No. 41941019), State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Independent Research Project (Grant No. SKLGP2021Z005).

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Minggao Tang and Qiang Xu contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Minggao Tang, Lina Wang, and Huanle Zhao. The first draft and revision of the manuscript was written by Minggao Tang, Huanle Zhao, Lina Wang, Guangjian Wu, Jian Zhou, Guang Li, Wenjing Cai, and Xu Chen. And all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Minggao Tang or Huanle Zhao.

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Supplementary file2 (XLSX 174 KB)

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Tang, M., Xu, Q., Wang, L. et al. Hidden dangers of ice avalanches and glacier lake outburst floods on the Tibetan Plateau: identification, inventory, and distribution. Landslides 20, 2563–2581 (2023). https://doi.org/10.1007/s10346-023-02125-4

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  • DOI: https://doi.org/10.1007/s10346-023-02125-4

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