Articles | Volume 16, issue 17
https://doi.org/10.5194/gmd-16-5113-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-16-5113-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Hazard assessment modeling and software development of earthquake-triggered landslides in the Sichuan–Yunnan area, China
Xiaoyi Shao
National Institute of Natural Hazards, Ministry of Emergency Management
of China, Beijing 100085, China
Key Laboratory of Compound and Chained Natural Hazards Dynamics, Ministry
of Emergency Management of China, Beijing 100085, China
Siyuan Ma
Institute of Geology, China Earthquake Administration, Beijing 100029,
China
Key Laboratory of Seismic and Volcanic Hazards, Institute of Geology,
China Earthquake Administration, Beijing 100029, China
National Institute of Natural Hazards, Ministry of Emergency Management
of China, Beijing 100085, China
Key Laboratory of Compound and Chained Natural Hazards Dynamics, Ministry
of Emergency Management of China, Beijing 100085, China
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The northwestern Yunnan region (NWYR), with a complex network of active faults, presents significant seismic hazards such as multi-segment ruptures and landslides. This article introduces a new seismic hazard model which integrates fault slip parameters to assess the risks associated with multi-segment ruptures. The results reveal the intricate relationship between these ruptures and the regional small block rotation induced by regional low-crustal flow and gravitational collapse.
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Preprint archived
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Shadows in optical images will deteriorate deformation measures in the pixel offset tracking method. We proposed a simple method to correct mismatches in deformation time series between Sentinel-2 and Landsat 8. We found high temperatures accelerated the landslide deformation in summers 2017/18, because rising temperatures weakened the ice strength on the sliding plane. Climate warming will result in more similar hazard chains in deglaciating mountains.
Xiyan Wu, Xiwei Xu, Guihua Yu, Junjie Ren, Xiaoping Yang, Guihua Chen, Chong Xu, Keping Du, Xiongnan Huang, Haibo Yang, Kang Li, and Haijian Hao
Earth Syst. Sci. Data, 16, 3391–3417, https://doi.org/10.5194/essd-16-3391-2024, https://doi.org/10.5194/essd-16-3391-2024, 2024
Short summary
Short summary
This study presents a national-scale database (1:4000 000) of active faults in China and its adjacent regions in tandem with an associated web-based query system. This database integrates regional-scale studies and surveys conducted over the past 2 decades (at reference scales from 1:250 000 to 1:50 000). Our system hosts this nation-scale database accessible through a Web Geographic Information System (GIS) application.
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Short summary
Scientific understandings of the distribution of coseismic landslides, followed by emergency and medium- and long-term risk assessment, can reduce landslide risk. The aim of this study is to propose an improved three-stage spatial prediction strategy and develop corresponding hazard assessment software called Mat.LShazard V1.0, which provides a new application tool for coseismic landslide disaster prevention and mitigation in different stages.
Scientific understandings of the distribution of coseismic landslides, followed by emergency...