Relations between density of earthquake-damaged trace and environmental factors in seismic intensity: a case study in Wenchuan County, China

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 > 山区发展研究中心

	Relations between density of earthquake-damaged trace and environmental factors in seismic intensity: a case study in Wenchuan County, China
	Yu, Hui1,2 ; Deng, Wei1 ; Luo, Yong 1,2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2012-11-01
卷号	67 期号:6 页码:1631-1637
关键词	Density of earthquake-damaged Trace Environmental factors Seismic intensity
ISSN号	1866-6280
通讯作者	Deng W
英文摘要	Many studies have been designed to assess seismic hazard and to improve post-earthquake damage evaluation models. Compared with previous studies, the research attempted to solve the problems of the effectiveness differences of seismic intensity on density of Earthquake-damaged trace (D-e) and established the appropriate models for D-e in different scale of seismic intensity. D-e as a relative value reduced the influence of area on earthquake-damaged trace. The research will provide the necessary scientific support to fast post-earthquake damage assessment and modeling. By utilizing GIS, RS and field investigation data, the spatial distribution characteristic of earthquake-damaged traces was analyzed. Effective factors including seismic intensity, distance to rivers and slope were identified through PCA. Specifically, seismic intensity was identified as the key factor. The inherent relations between D-e and seismic intensity, D-e and distance to rivers in seismic intensity, and D-e and slope in seismic intensity were modeled by regression analysis. The results demonstrated that both earthquake energy and D-e have attenuation characteristics. There is a significant positive correlation between D-e and seismic intensity (the pearson correlation is 0.917). That is, the higher the seismic intensity, the greater the D-e was. The erosion of river leads to steep slope, which is in favor of the formation of mountain hazards. D-e showed the decreasing tendency with the increasing distance to river. With the increase of slope, the D-e gradually became stronger. For distance to river, the largest changing rate of D-e appeared on seismic intensity XI, but for slope, the largest changing rate of D-e appeared on seismic intensity X.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
研究领域[WOS]	Environmental Sciences & Ecology ; Geology ; Water Resources
收录类别	SCI
语种	英语
WOS记录号	WOS:000310615100006
公开日期	2013-05-22
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/5319]
专题	成都山地灾害与环境研究所_山区发展研究中心成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10049, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hui,Deng, Wei,Luo, Yong. Relations between density of earthquake-damaged trace and environmental factors in seismic intensity: a case study in Wenchuan County, China[J]. ENVIRONMENTAL EARTH SCIENCES,2012,67(6):1631-1637.
APA	Yu, Hui,Deng, Wei,&Luo, Yong.(2012).Relations between density of earthquake-damaged trace and environmental factors in seismic intensity: a case study in Wenchuan County, China.ENVIRONMENTAL EARTH SCIENCES,67(6),1631-1637.
MLA	Yu, Hui,et al."Relations between density of earthquake-damaged trace and environmental factors in seismic intensity: a case study in Wenchuan County, China".ENVIRONMENTAL EARTH SCIENCES 67.6(2012):1631-1637.