Debris-flows scale predictions based on basin spatial parameters calculated from Remote Sensing images in Wenchuan earthquake area

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 > 数字山地与遥感应用中心

	Debris-flows scale predictions based on basin spatial parameters calculated from Remote Sensing images in Wenchuan earthquake area
	Jianrong Fan
	2014-08
会议名称	35th International Symposiumon Remote Sensing of Environment (ISRSE35)
会议日期	2013.4.22-26
会议地点	Beijing
关键词	Remote Sensing Debris flow spatial parameter prediction
页码	012091
通讯作者	Jianrong Fan
英文摘要	Debris flow is a common hazard in the Wenchuan earthquake area. Collapse and Landslide Regions (CLR), caused by earthquakes, could be located from Remote Sensing images. CLR are the direct material source regions for debris flow. The Spatial Distribution of Collapse and Landslide Regions (SDCLR) strongly impact debris-flow formation. In order to depict SDCLR, we referred to Strahler's Hypsometric analysis method and developed 3 functional models to depict SDCLR quantitatively. These models mainly depict SDCLR relative to altitude, basin mouth and main gullies of debris flow. We used the integral of functions as the spatial parameters of SDCLR and these parameters were employed during the process of debris-flows scale predictions. Grouping-occurring debris-flows triggered by the rainstorm, which occurred on September 24th 2008 in Beichuan County, Sichuan province China, were selected to build the empirical equations for debris-flows scale predictions. Given the existing data, only debris-flows runout zone parameters (Max. runout distance L and Lateral width B) were estimated in this paper. The results indicate that the predicted results were more accurate when the spatial parameters were used. Accordingly, we suggest spatial parameters of SDCLR should be considered in the process of debris-flows scale prediction and proposed several strategies to prevent debris flow in the future.
收录类别	EI
会议主办者	International Society for Digital Earth ; The Center for Earth Observation and Digital Earth (CEODE), Chinese Academy of
会议录	Earth and Environmental Science
学科主题	摄影测量与遥感技术
语种	英语
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/7545]
专题	成都山地灾害与环境研究所_数字山地与遥感应用中心
推荐引用方式 GB/T 7714	Jianrong Fan. Debris-flows scale predictions based on basin spatial parameters calculated from Remote Sensing images in Wenchuan earthquake area[C]. 见:35th International Symposiumon Remote Sensing of Environment (ISRSE35). Beijing. 2013.4.22-26.