IMHE OpenIR  > 山地灾害与地表过程重点实验室
Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms
Zhang Zhen1,2,3; He Siming1,2,3,4; Liu Wei1,2; Liang Heng1,2,3; Yan Shuaixing1,2,3; Deng Yu1,2,3; Bai Xiuqiang3,4,5; Chen Zheng1,2,3
2019
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume16Issue:4Pages:777-785
SubtypeArticle
Contribution Rank1
AbstractThe catastrophic Baige landslide occurred at 22:05:36 (Beijing time UTC+8) on the 10th of October 2018 in Tibet China. The large and rapid landslide generated strong long-period seismic signals that were recorded by broadband seismic stations. In this study we inverted the long-period seismic data from five broadband seismic stations at distances of 108 to 255km from the event to obtain a time series of forces that the landslide exerted on the Earth. Then we calculated the spectrogram of the vertical component of the seismic signal generated by the event recorded at the closest broadband seismic station (GZI). This spectrogram combined with the force-time function and the field investigation described the dynamic process of the landslide that could be divided into three intervals. For the first interval assuming that the rockslide can be regarded as a sliding block we estimated the average slope-parallel acceleration of the sliding materials at 1.08m/s(2) and the average friction coefficient at the base of the rockslide at 0.47. In the second and third intervals the rockslide had converted to granular debris. The direction and timing of the force correspond to the different points in the sliding path of the granular debris. We used this correlation to estimate the speeds of the granular debris. This study demonstrates that the seismic signal generated by the landslide provides an effective method for estimating the dynamic properties of the landslide.
KeywordBaige landslide Spectrogram Long-period seismic signal Force-time function Landslide dynamics
DOI10.1007/s10346-019-01145-3
Indexed BySCI
Language英语
WOS IDWOS:000463099000009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25588
Collection山地灾害与地表过程重点实验室
Corresponding AuthorHe Siming
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhang Zhen,He Siming,Liu Wei,et al. Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms[J]. LANDSLIDES,2019,16(4):777-785.
APA Zhang Zhen.,He Siming.,Liu Wei.,Liang Heng.,Yan Shuaixing.,...&Chen Zheng.(2019).Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms.LANDSLIDES,16(4),777-785.
MLA Zhang Zhen,et al."Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms".LANDSLIDES 16.4(2019):777-785.
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