Volume expansion rates of seismic landslides and influencing factors: A case study of the 2008 Wenchuan earthquake

doi:10.1007/s11629-019-5479-7

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 > Journal of Mountain Science > Journal of Mountain Science-2019 > Vol16 No.8

	Volume expansion rates of seismic landslides and influencing factors: A case study of the 2008 Wenchuan earthquake
	Ma Si-yuan; Xu Chong; Xu Xi-wei
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:8 页码:1731-1742
关键词	Landslide volume Volume expansion rate Wenchuan earthquake Influencing factors
ISSN号	1672-6316
DOI	10.1007/s11629-019-5479-7
文献子类	Article
英文摘要	When a big landside occurs, source material can change into loose deposit during its runout, causing the increase of the total landslide volume to some extent. Such changes can influence the quantification of seismic landslides. The objective of this paper was to study the volume expansion rate of landslides based on the data of 1417 co-seismic landslides triggered by the 2008 Wenchuan, China M-w 7.9 earthquake. We also analyzed the correlations between this rate and landslide geometric parameters (volume, height (H), length-width ratio (L/W), length-height ratio (L/H)), and environmental factors (peak ground acceleration (PGA), lithology, slope angle and aspect). The results show that the total source volume of the 1417 landslides is 1248 million m(3), while the total volume of the deposit is 1501 million m(3), which means the total volume expanding rate (E-t) is 20.3% with the average volume expansion rate (E-a) 22.6%. The analysis indicates that volume expansion rate generally decreases with the increasing volume and height of landslides, while becoming larger with increasing L/H and L/W. Besides, the volume expansion rate is closely related to the landslide type and the volume scale of landslides. This study analyses volume change of co-seismic landslides deeply, permitting to help the correct quantification of the source volume and deposit volume of seismic landslide and a useful reference for the correct quantification of landslide volume.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000478892900001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46547]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.8
推荐引用方式 GB/T 7714	Ma Si-yuan,Xu Chong,Xu Xi-wei. Volume expansion rates of seismic landslides and influencing factors: A case study of the 2008 Wenchuan earthquake[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(8):1731-1742.
APA	Ma Si-yuan,Xu Chong,&Xu Xi-wei.(2019).Volume expansion rates of seismic landslides and influencing factors: A case study of the 2008 Wenchuan earthquake.JOURNAL OF MOUNTAIN SCIENCE,16(8),1731-1742.
MLA	Ma Si-yuan,et al."Volume expansion rates of seismic landslides and influencing factors: A case study of the 2008 Wenchuan earthquake".JOURNAL OF MOUNTAIN SCIENCE 16.8(2019):1731-1742.