Volume, gravitational potential energy reduction, and regional centroid position change in the wake of landslides triggered by the 14 April 2010 Yushu earthquake of China

doi:10.1007/s12517-013-1020-4

	Volume, gravitational potential energy reduction, and regional centroid position change in the wake of landslides triggered by the 14 April 2010 Yushu earthquake of China
	Xu, Chong 1; Xu, Xiwei 1; Pourghasemi, Hamid Reza 2; Pradhan, Biswajeet 3; Iqbal, Javed 4,5
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2014-06-01
卷号	7 期号:6 页码:2129-2138
关键词	Landslides The Yushu earthquake Gravitational potential energy reduction Landscape change Regional centroid position
ISSN号	1866-7511
DOI	10.1007/s12517-013-1020-4
文献子类	Article
英文摘要	In recent years, earthquake-triggered landslides have attracted much attention in the scientific community as a main form of seismic ground response. However, little work has been performed concerning the volume and gravitational potential energy reduction of earthquake-triggered landslides and their severe effect on landscape change. This paper presents a quantitative study on the volume, gravitational potential energy reduction, and change in landscape related to landslides triggered by the 14 April 2010 Yushu earthquake. At least 2,036 landslides were triggered by the earthquake. A total landslide scar area of 1.194 km(2) was delineated from the visual interpretation of aerial photographs and satellite images and was supported by selected field checking. In this paper, we focus on possible answers to the following five questions: (1) What is the total volume of the 2,036 landslides triggered by the earthquake, and what is the average landslide erosion thickness in the earthquake-stricken area? (2) What are the elevations of all landslide materials in relation to pre- and post-landsliding? (3) How much was the gravitational potential energy reduced due to the sliding of these landslide materials? (4) What is the average elevation change caused by these landslides in the study area? (5) What is the vertical change of the regional centroid position above sea level, as induced by these landslides? It is concluded that the total volume of the 2,036 landslides is 2.9399 x 10(6) m(3). The landslide erosion thickness throughout the study area is 2.02 mm. The materials of these landslides moved from an elevation of 4,145.243 to 4,104.697 m, resulting in a decreased distance of 40.546 m. The gravitational potential energy reduction related to the landslides triggered by the earthquake was 2.9213 x 10(12) J. The average regional elevation of the study area is 4,427.160 m, a value consistent with the assumption that the accumulated materials were remained in situ. This value changes from 4,427.160 to 4,427.158 m with all landslide materials moved out of the study area, resulting in a reduction in elevation of 2 mm. Based on the assumption that all landslide materials moved out of the study area, the elevations of the centroid of the study area's crust changed from 2,222.45967 to 2,222.45867 m, which means the centroid value decreased by 1 mm. This value is 0.001 mm when assuming that the materials were remained in situ, which is almost negligible, compared with the situation of "all landslide materials moved out of the study area.".
WOS关键词	2008 WENCHUAN EARTHQUAKE ; SUPPORT VECTOR MACHINE ; CENTRAL SOUTHERN ALPS ; EL-SALVADOR ; NEW-ZEALAND ; PREFECTURE EARTHQUAKE ; SUBMARINE LANDSLIDES ; STATISTICAL-ANALYSIS ; LOGISTIC-REGRESSION ; GOLESTAN PROVINCE
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000336440600003
资助机构	National Science Foundation of China(41202235 ; National Science Foundation of China(41202235 ; 91214201) ; 91214201) ; National Science Foundation of China(41202235 ; National Science Foundation of China(41202235 ; 91214201) ; 91214201) ; National Science Foundation of China(41202235 ; National Science Foundation of China(41202235 ; 91214201) ; 91214201) ; National Science Foundation of China(41202235 ; National Science Foundation of China(41202235 ; 91214201) ; 91214201)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86133]
专题	中国科学院地质与地球物理研究所
通讯作者	Xu, Chong
作者单位	1.China Earthquake Adm, Inst Geol, Key Lab Act Tecton & Volcano, Beijing 100029, Peoples R China 2.TMU, Coll Nat Resources & Marine Sci, Nur, Iran 3.Univ Putra Malaysia, Dept Civil Engn, Fac Engn, Spatial & Numer Modeling Res Grp, Serdang 43400, Selangor Darul, Malaysia 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.COMSATS Inst Informat Technol, Dept Earth Sci, Abbottabad, Pakistan
推荐引用方式 GB/T 7714	Xu, Chong,Xu, Xiwei,Pourghasemi, Hamid Reza,et al. Volume, gravitational potential energy reduction, and regional centroid position change in the wake of landslides triggered by the 14 April 2010 Yushu earthquake of China[J]. ARABIAN JOURNAL OF GEOSCIENCES,2014,7(6):2129-2138.
APA	Xu, Chong,Xu, Xiwei,Pourghasemi, Hamid Reza,Pradhan, Biswajeet,&Iqbal, Javed.(2014).Volume, gravitational potential energy reduction, and regional centroid position change in the wake of landslides triggered by the 14 April 2010 Yushu earthquake of China.ARABIAN JOURNAL OF GEOSCIENCES,7(6),2129-2138.
MLA	Xu, Chong,et al."Volume, gravitational potential energy reduction, and regional centroid position change in the wake of landslides triggered by the 14 April 2010 Yushu earthquake of China".ARABIAN JOURNAL OF GEOSCIENCES 7.6(2014):2129-2138.