Comparison of the landslides triggered by the 2013 Lushan earthquake with those triggered by the strong 2008 Wenchuan earthquake in areas with high seismic intensities

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• 作者：Genlong Wang
• 关键词：Lushan earthquake ; Landslides ; Co ; seismic fault ; Wenchuan earthquake ; Rock fall
• 刊名：Bulletin of Engineering Geology and the Environment
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：74
• 期：1
• 页码：77-89
• 全文大小：5,618 KB
• 参考文献：1. Alfaroa P, Delgadoa J, Garcia-Tortosab FJ, Lentic L, Lópezd JA, López-Casadoe C, Martinof S (2012) Widespread landslides induced by the Mw 5.1 earthquake of 11 May 2011 in Lorca, SE Spain. Eng Geolgy 137-38:40-2 CrossRef
  2. Chang M, Tang C, Li WL, Zhang DD, Jia T, Mao GC, Zhou ZY (2013) Image interpretation and spatial analysis of geohazards induced by -.20-Lushan earthquake in epicenter area. J Chengdu Univ Technol (Sci Technol Ed) 40(3):264-74 (in Chinese)
  3. Chigira M, Yagi H (2006) Geological and geomorphological characteristics of landslides triggered by the 2004 Mid Niigta prefecture earthquake in Japan. Eng Geol 82(4):202-21 CrossRef
  4. Chigira M, Wu XY, Inokuchi T, Wang GH (2010) Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China. Geomorphology 118(3-):225-38 CrossRef
  5. China Seismological Bureau (2013) The fault rupture of the Apr. 20, 2013, Lushan earthquake is about 40?km and the maximum displacement is 1.6?m. (2013-04-23). http://www.cea.gov.cn/publish/dizhenj/468/553/100342/100343/20130423205445248545384/index.html (in Chinese)
  6. Chinese Academy of Sciences (2013) The preliminary results of the fault rupture process inversion. (2013-04-24). http://www.stdaily.com/special/content/2013-04/24/content_596813.thm (in Chinese)
  7. Crowley JK, Hubbard BE, Mars JC (2003) Analysis of potential debris flow source areas on Mount Shasta, California, by using airborne and satellite remote sensing data. Remote Sens Environ 87:345-58 CrossRef
  8. Dai FC, Xu C, Yao X, Xu L, Tu XB, Gong QM (2011) Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China. J Asian Earth Sci 40:883-95 CrossRef
  9. George P, Sotiris V, Athanassios G, Spyros P (2013) GIS-based statistical analysis of the spatial distribution of earthquake-induced landslides in the island of Lefkada, Ionian Islands, Greece. Landslides 10:771-83. doi:10.1007/s10346-021-0357-1
  10. Gorum T, Fan XM, van Westen CJ, Huang RQ, Xu Q, Tang C, Wang GH (2011) Distribution pattern of earthquake-induced landslides triggered by the 12 May 2008 Wenchuan earthquake. Geomorphology 133(3-):152-67 CrossRef
  11. Gorum T, van Westen CJ, Korup O, van der Meijde M, Fan X, van der Meer FD (2013) Complex rupture mechanism and topography control symmetry of mass-wasting pattern, 2010 Haiti earthquake. Geomorphology 184:127-38 CrossRef
  12. Harp EL, Jibson RW (1996) Landslides triggered by the 1994 Northridge, California, earthquake. Bull Seismol Soc Am 86(1B):S319–S332
  13. Harp EL, Keefer DK, Sato HP, Yagi H (2011) Landslide inventories: the essential part of seismic landslide hazard analyses. Eng Geol 122(1-):9-1 CrossRef
  14. Hiroshi PS, Hiroyuki H, Satoshi F, Mikio T, Mamoru K, Hiroshi U, Junko I (2007) Interpretation of landslide distribution triggered by the 2005 Northern Pakistan earthquake using SPOT 5 imagery. Landslides 4(2):113-22 CrossRef
  15. Huang R, Li W (2009) Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake, China. Bull Eng Geol Environ 68:363-71 CrossRef
  16. Jibson RW, Keefer DK (1989) Statistical analysis of factors affecting landslide distribution in the new Madrid seismic zone, Tennessee and Kentucky. Eng Geol 27(1-):509-42 CrossRef
  17. Keefer DK (1984) Landslides caused by
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Applied Geosciences
  Structural Foundations and Hydraulic Engineering
  Geoecology and Natural Processes
  Nature Conservation
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-9537

文摘

The epicenters of the 2013 Lushan earthquake and the 2008 Wenchuan earthquake were both in the Longmen Mountains, in areas with similar geographical, geological, and geomorphological conditions. However, there are some differences between the landslides triggered by the two earthquakes. Correlations between the occurrence of landslides and geological parameters such as the distance from the seismogenic fault, seismic intensity, elevation, and lithology were analyzed with the aid of field investigations. Firstly, more landslides were triggered by each earthquake close to the seismogenic fault and in areas with higher seismic intensities, although there were also obvious differences between the landslides generated by the two earthquakes. Secondly, the earthquakes showed different correlations between the number of landslides and elevation, and this difference was closely related to the effects of seismic amplification and peak ground acceleration. Nevertheless, the effect of seismic amplification during the Lushan earthquake was not significant at elevations of >2,000?m due to a reduction in earthquake magnitude at such elevations. Thirdly, there was no obvious correlation between the number of landslides and the age of the rock (young or old lithology) for each earthquake. Indeed, differences between the distributions of landslides across different lithologies were actually due to the coincidental clustering of young or old strata around the rupture zone of the seismogenic fault; these rock masses were extremely fractured and they underwent strong shaking. Finally, the author hopes that the results of the present research will aid further research into the landslides triggered by the two earthquakes.