Exploring landslide erosion volume-area scaling relationships by slip depth using changes in DTMs for basin sediment volume estimation

doi:10.1007/s11629-018-4888-3

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 > Journal of Mountain Science > Journal of Mountain Science-2019 > Vol16 No.3

	Exploring landslide erosion volume-area scaling relationships by slip depth using changes in DTMs for basin sediment volume estimation
	Chen Su-chin; Chen Chien-yuan; Huang Wen-yan
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:3 页码:581-594
关键词	Landslide Volume-area scaling relationship Power-law Self-similarity GIS Landslide frequency-area distribution
ISSN号	1672-6316
DOI	10.1007/s11629-018-4888-3
文献子类	Article
英文摘要	Landslides produce large quantities of sediment deposits and reduce reservoir life. This study investigated landslides at the Shihmen Reservoir basin in Taiwan that were induced by Typhoon Sinlaku and Typhoon Jangmi in 2008. We formulate scaling relationships between landslide erosion volume and area and conclude that sediment budget can be estimated based on the easier-todetermine landslide erosion area. The methodologies applied for the investigation were geomorphological analysis through 5 m x 5 m digital terrain models (DTMs) of the basin created before and after the landslide events and spatial analysis through a geographic information system. The erosion area and volume of landslides were measured through the subtraction of DTMs produced before and after the events. Statistical analysis revealed that the landslide erosion frequency-magnitude distribution exhibited power-law behaviors with a scaling exponent of 2.15 for the frequency-area distribution and 1.66 for the frequency-volume distribution. This paper proposes different scaling relationships for different moving depths, and landslide erosion volumes were estimated on the basis of depth; thus, landslides of different scales can be distinguished to avoid errors in volume estimation. Two different scaling exponents are proposed: 1.21 for landslide erosions with depths of less than 2 m and 1.01 for landslide erosions with depths of more than 2 m. The proposed scaling relationships are practical for landslide erosion volume estimation by different depths according to the landslide area, and they can provide preliminary results for sediment budget planning in a reservoir basin.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000460754100008
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46453]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.3
推荐引用方式 GB/T 7714	Chen Su-chin,Chen Chien-yuan,Huang Wen-yan. Exploring landslide erosion volume-area scaling relationships by slip depth using changes in DTMs for basin sediment volume estimation[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(3):581-594.
APA	Chen Su-chin,Chen Chien-yuan,&Huang Wen-yan.(2019).Exploring landslide erosion volume-area scaling relationships by slip depth using changes in DTMs for basin sediment volume estimation.JOURNAL OF MOUNTAIN SCIENCE,16(3),581-594.
MLA	Chen Su-chin,et al."Exploring landslide erosion volume-area scaling relationships by slip depth using changes in DTMs for basin sediment volume estimation".JOURNAL OF MOUNTAIN SCIENCE 16.3(2019):581-594.