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| Content Provider | Springer Nature Link |
|---|---|
| Author | Xu, Chong Xu, Xiwei Tian, Yingying Shen, Lingling Yao, Qi Huang, Xueqiang Ma, Junxue Chen, Xi Ma, Siyuan |
| Copyright Year | 2016 |
| Abstract | The 2015 Gorkha Earthquake in Nepal and the 2008 Wenchuan Earthquake in China occurred at the south and southeast margins of the Tibetan Plateau, respectively. Both earthquakes had similar magnitudes of Mw 7.8 and 7.9, caused catastrophic loss of life and damage to property, and generated tens of thousands of landslides. Comparisons of pre- and post-quake satellite images supported by field investigations show that the Gorkha Earthquake triggered at least 2 064 large landslides (defined as covering an area ≥10 000 m$^{2}$) over a ∼35 600 km$^{2}$ region with a volume of (444–584)×10$^{6}$ (average 509×10$^{6}$) m$^{3}$ and total area of 44.78×10$^{6}$ m$^{2}$. In contrast, the Wenchuan Earthquake triggered 25 580 large landslides over a region of ∼44 000 km$^{2}$ with a volume of (7 128–9 479)×10$^{6}$ (average 8 219×10$^{6}$) m$^{3}$ and a total area of about 670.65×10$^{6}$ m$^{2}$. Several controlling factors including topographic relief, slope steepness, and regional peak ground acceleration (PGA) were investigated to try to explain the great differences between the number, volume and area of the coseismic landslides associated with the two similar earthquakes. We found that the differences primarily arose from an unexpected factor, the dip angle of the seismogenic fault. This discovery should aid understanding the failure mechanisms of quake-triggered landslides, and suggests that more factors should be taken into consideration in estimating coseismic landslide volumes from earthquake magnitudes. |
| Starting Page | 1008 |
| Ending Page | 1015 |
| Page Count | 8 |
| File Format | |
| ISSN | 1674487X |
| Journal | Journal of Earth Science |
| Volume Number | 27 |
| Issue Number | 6 |
| e-ISSN | 1867111X |
| Language | English |
| Publisher | China University of Geosciences |
| Publisher Date | 2016-12-10 |
| Publisher Place | Wuhan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Gorkha Earthquake Wenchuan Earthquake landslide dip angle seismogenic fault Earth Sciences Geotechnical Engineering & Applied Earth Sciences Biogeosciences Geochemistry Geology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences |
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