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Liquefaction in western Sichuan Basin during the 2008 Mw 7.9 Wenchuan earthquake, China
Jing, LZ (Jing Liu-Zeng)1; Wang, P (Wang, Peng)1; Zhang, ZH (Zhang, Zhihui)2; Li, ZG (Li, Zhigang)1; Cao, ZZ (Cao, Zhenzhong)3; Zhang, JY (Zhang, Jinyu)1; Yuan, XM (Yuan, Xiaoming)3; Wang, W (Wang, Wei)1; Xing, XC (Xing, Xiuchen)1; Jing, LZ
Source PublicationTECTONOPHYSICS
2017
Volume694Issue:0Pages:214-238
DOI10.1016/j.tecto.2016.11.001
AbstractStrong ground shaking during the 2008 Mw 7.9 Wenchuan earthquake, which occurred in the foothills of the Longmen Shan in southwestern China, resulted in widespread coseismic deformation features, such as liquefaction and water ejection. We present a systematic survey of the soil liquefaction and water ejection features caused by this major earthquake. The majority of liquefaction sites occurred along major alluvial fan-building rivers, where the water table was a few meters below the surface. While there is no clear correlation between water fountain height and peak ground acceleration, similar to 58% of liquefaction sites are located 20-35 km from the Beichuan fault Clusters of sites with anomalously high (>2 m) water ejections are located near the surface projection of the Range Front blind thrust and its splay faults. The density of anomalously high eruptions within the window surrounding the Range Front blind thrust is 3-6 times greater than outside this region. Our results suggest that geologic structures may play a role in augmenting liquefaction intensity and shaking-related seismic hazards in sedimentary basins. We speculate that the mechanism could be the amplification of shaking by fault zone structures. Alternatively, faults may act as pathways with increased vertical permeability, allowing fluids from deeper confined aquifers to migrate to and enhance liquefaction of the upper soil, as proposed previously by Wang (2007). Liquefaction associated with the Wenchuan earthquake thus demonstrates the importance of considering geologic structures other than the primary earthquake-producing fault in seismic hazard evaluation and earthquake resistance design in areas with similar geologic and hydrological settings. (C) 2016 Elsevier B.V. All rights reserved.
Subject Area地球物理学
WOS IDWOS:000392038200014
Language英语
Indexed BySCI
KeywordSAN-ANDREAS FAULT 1994 NORTHRIDGE EARTHQUAKE LOS-ANGELES BASIN GROUND-MOTION SEISMIC-WAVES CANTERBURY EARTHQUAKE NOCERA-UMBRA RECURRENT LIQUEFACTION SITE AMPLIFICATION SOIL LIQUEFACTION
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics ; Geochemistry & Geophysics
Cooperation Status国内
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8370
Collection图书馆
Corresponding AuthorJing, LZ
Affiliation1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China.
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
3.China Earthquake Adm, Inst Engn Mech, Harbin 150080, Peoples R China.
Recommended Citation
GB/T 7714
Jing, LZ ,Wang, P ,Zhang, ZH ,et al. Liquefaction in western Sichuan Basin during the 2008 Mw 7.9 Wenchuan earthquake, China[J]. TECTONOPHYSICS,2017,694(0):214-238.
APA Jing, LZ .,Wang, P .,Zhang, ZH .,Li, ZG .,Cao, ZZ .,...&Jing, LZ.(2017).Liquefaction in western Sichuan Basin during the 2008 Mw 7.9 Wenchuan earthquake, China.TECTONOPHYSICS,694(0),214-238.
MLA Jing, LZ ,et al."Liquefaction in western Sichuan Basin during the 2008 Mw 7.9 Wenchuan earthquake, China".TECTONOPHYSICS 694.0(2017):214-238.
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