A Study of Detection of Landslide Disasters due to the Pakistan Earthquake using ALOS data
نویسندگان
چکیده
On October 29, 2008, magnitude 6.4 earthquake occurred in a area of western Pakistan. One of the Japanese earth observation satellite, Advanced Land Observing Satellite (ALOS), observed this area by all onboard sensors, AVNIR-2, PRISM, and PALSAR. By optical imagery, AVNIR-2 and PRISM imagery, huge landslide (rock slide) and landslide dam were confirmed by visual interpretation. And also this landslide can be confirmed by PALSAR imagery. Using optical imagery and PALSAR data, the amount of deformation of landslide was analyzed. Especially, PALSAR DInSAR analysis performed well to detect landslide movement that cannot detect by optical imagery. However, some landslides was not detected clearly by PALSAR DInSAR analysis. Through these analyses, the applicability of ALOS data for landslide detection is discussed in this paper. And using both optical imagery and PALSAR DInSAR imagery, landslide disasters of the 2008 Pakistan earthquake is evaluated.
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