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Hazard assessment of earthquake-induced landslides by using permanent displacement model considering near-fault pulse-like ground motions

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Abstract

A permanent displacement model (PDM) is often used for hazard assessment of earthquake-induced landslides (ELHA) at regional scale. Pulse-like ground motions (PLGM) are rarely considered in the existing PDMs, although they have been proved to have significant influence on the initiation of landslides in near-fault area. In this paper, taking an area affected by 1994 Mw 6.7 Northridge earthquake as an example, 3 PDMs composed of PLGM, and 11 other models were selected to compare and verify the effects of PLGM. According to the results of multiple evaluation metrics such as the ground failures captured (%GFC), receiver operating characteristics (ROC), and quality sum (Qs), it indicates that the PDMs composed of PLGM use less ground motion records, but the accuracy of evaluation results is higher. This shows that PLGM have significant effect on ELHA. The ELHA method considering the near-fault PLGM was applied to a certain area along the Sichuan-Tibet Railway. The results show that the displacement model considering PLGM predicted more landslides cells. Among them, 8.45% of the slopes are in the extremely high hazard area, and about 30% of the extremely high hazard area is within 5 km of the railway. The slope with high hazard of earthquake-induced landslide can be investigated and protected in advance to avoid casualties and property losses.

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Funding

This study has received financial support from the National Natural Science Foundation of China (41977213), Science & Technology Department of Sichuan Province (20GJHZ0232), The Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0906).

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Contributions

Jing Liu: conceptualization, methodology, writing — original draft, writing — review and editing. Yingbin Zhang: conceptualization, methodology, funding acquisition. Jiangtao Wei: formal analysis, validation, data curation. Chenlin Xiang: writing — review and editing, visualization. Qingdong Wang: data curation, writing — review and editing. Peiyi Xu: writing — review and editing. Haiying Fu: writing — review and editing.

Corresponding author

Correspondence to Yingbin Zhang.

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The authors declare no competing interests.

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Liu, J., Zhang, Y., Wei, J. et al. Hazard assessment of earthquake-induced landslides by using permanent displacement model considering near-fault pulse-like ground motions. Bull Eng Geol Environ 80, 8503–8518 (2021). https://doi.org/10.1007/s10064-021-02464-3

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  • DOI: https://doi.org/10.1007/s10064-021-02464-3

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