Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms

doi:10.1007/s10346-019-01145-3

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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 Zhen 1,2,3; He Siming1,2,3,4 ; Liu Wei1,2 ; Liang Heng 1,2,3; Yan Shuaixing1,2,3 ; Deng Yu 1,2,3; Bai Xiuqiang 3,4,5; Chen Zheng 1,2,3
刊名	LANDSLIDES
	2019
卷号	16 期号:4 页码:777-785
关键词	Baige landslide Spectrogram Long-period seismic signal Force-time function Landslide dynamics
ISSN号	1612-510X
DOI	10.1007/s10346-019-01145-3
产权排序	1
文献子类	Article
英文摘要	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.
电子版国际标准刊号	1612-5118
语种	英语
WOS记录号	WOS:000463099000009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25588]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	He Siming
作者单位	1.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
推荐引用方式 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.