GIS-based landslide hazard zonation model and its application

摘要：

Multi-source earth observation data are highly desirable in nowaday landslide hazard prediction modeling. Landslide Hazard Zonation (LHZ) is a very important content of landslide hazard prediction modeling. In this paper, take Wan county for instance, we investigate the potentials of derivation from hybrid data sets to study landslide hazard zonation based on the ordinal scale relative weighting-rating technique. LHZ is then performed with chosen factor layers including: buffer map of thrusts, lithology, slope angle and relative relief calculated from DEM, NDVI, buffer map of drainage and Lineaments extracted from the digital satellite scene (TM). Then the Landslide Hazard Index (LHI) value is calculated and landslide hazard zonation is decided by slicing LHI histogram. The statistics demonstrate that High stable slope zone, Stable slope zone, Quasi-stable slope zone, Relatively unstable slope zone, Unstable slope zone and Defended slope zone account for 2.20%, 14.02%, 39.88%, 28.27%, 12.17% and 3.47% respectively. Then, GPS deformation control points on the landslide bodies are used to verify the validity of the LHZ technique.

关键词： landslide hazard zonation digital elevation model (DEM) landslide triggering factors

作者: Wang Jian Peng Xiang-guo

作者单位: Jiangsu Key Laboratory for Resources and Environmental Information Engineering, Xuzhou 221116, China Jiangsu Key Laboratory for Resources and Environmental Information Engineering, Xuzhou 221116, China

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-7

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）