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Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms
Zhang, Z (Zhang, Zhen)1,2,3; He, SM (He, Siming)1,2,3,4; Liu, W (Liu, Wei)1,2; Liang, H (Liang, Heng)1,2,3; Yan, SX (Yan, Shuaixing)1,2,3; Deng, Y (Deng, Yu)1,2,3; Bai, XQ (Bai, Xiuqiang)4,5; Chen, Z (Chen, Zheng)1,2,3
Source PublicationLANDSLIDES
2019
Volume16Issue:4Pages:777-785
DOI10.1007/s10346-019-01145-3
Abstract

The 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.

Subject AreaGeosciences
WOS IDWOS:000463099000009
Language英语
Indexed BySCI
KeywordMount St-helens Seismic Detection Debris-flow Waves Eruption Network
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
Cooperation Status国内
ISSN1612-510X
Department大陆碰撞与高原隆升
URL查看原文
PublisherSPRINGER HEIDELBERG
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9351
Collection图书馆
Corresponding AuthorHe, SM (He, 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, Z ,He, SM ,Liu, W ,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, Z .,He, SM .,Liu, W .,Liang, H .,Yan, SX .,...&Chen, Z .(2019).Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms.LANDSLIDES,16(4),777-785.
MLA Zhang, Z ,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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