LANDSLIDE HAZARD RAPID ASSESSMENT IN THE M<sub>s</sub> 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL

YANG Zhi-hua; ZHANG Yong-shuang; GUO Chang-bao; DU Guo-liang

Volume 23 Issue 1

Feb. 2017

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YANG Zhi-hua, ZHANG Yong-shuang, GUO Chang-bao, et al., 2017. LANDSLIDE HAZARD RAPID ASSESSMENT IN THE Ms 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL. Journal of Geomechanics, 23 (1): 115-124.

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YANG Zhi-hua, ZHANG Yong-shuang, GUO Chang-bao, et al., 2017. LANDSLIDE HAZARD RAPID ASSESSMENT IN THE M_s 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL. Journal of Geomechanics, 23 (1): 115-124.

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LANDSLIDE HAZARD RAPID ASSESSMENT IN THE M_s 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL

YANG Zhi-hua^{1, 2
,},
ZHANG Yong-shuang^{1, 2
,
,},
GUO Chang-bao^{1, 2},
DU Guo-liang^{1, 2}

1.
Key Laboratory of Neotectonic Movement and Geohazard, Ministry of Land and Resources, Beijing 100081, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Bejing 100081, China

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Received: 2016-05-23
Published: 2017-02-01

Abstract

Abstract

April 25, 2015, an M_s8.1 earthquake occurred in Nepal with epicenter of 28.2°N, 84.7° E and focal depth of 20 km. The earthquake and induced landslides caused serious casualties and economic losses in Nepal and southwest Tibet of China. After the earthquake, the earthquake-induced landslide hazard distribution offered information to timely relief activities. Based on the detailed analysis of geomorphology, lithology, tectonics, hydrology and typical landslides, the sophisticated Newmark model and Geographic Information System were adopted to complete the rapid assessment of landslide hazard distribution in the Nepal earthquake-impacted area. The assessment results had good confidence by the verification in terms of landslide cases coming from remote sensing interpretation in partial regions and initially reflected the basic characteristics of Nepal earthquake-induced landslide hazard distribution. Then, considering the post-earthquake rainfall effect that can significantly initiate landslides, the landslide hazard rapid assessment under the combined effect of seismic motion and heavy rainfall was completed. The landslide hazard rapid assessment results can provide important references to geo-hazard prevention and mitigation during post-earthquake emergent relief activities.
- M_s 8.1 Nepal earthquake,
- Newmark model,
- landslide hazard,
- rapid assessment,
- Tibet

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References(23)

References

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LANDSLIDE HAZARD RAPID ASSESSMENT IN THE M_s 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL

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LANDSLIDE HAZARD RAPID ASSESSMENT IN THE M_s 8.1 NEPAL EARTHQUAKE-IMPACTED AREA, BASED ON NEWMARK MODEL