Title :
Change detection method for landslide area using RGB color composite image of SRTM and ALOS/PALSAR InSAR DEM: A case study of the Iwate-Miyagi Nairiku Earthquake in 2008
Author :
Asaka, Tomohito ; Iwashita, Keishi ; Kudou, Katsuteru ; Aoyama, Sasayoshi ; Yamamoto, Yoshiyuki
Author_Institution :
Nihon Univ., Chiba, Japan
Abstract :
The aim of this study is to advocate a change detection method for coseismic landsliding using RGB color composite image assigned pre-earthquake DEM (SRTM-3) and post-earthquake DEM (ALOS/PALSAR InSAR DEM). In this study, we applied our proposed method to landslide areas occurred by the Iwate-Miyagi Nairiku Earthquake in 2008. As a result, we found out that the area of sliding length and sliding width over 200m where is detected in the RGB color composite image using SRTM-3 and ALOS/PALSAR InSAR DEM. In conclusion, we showed that it is effective in using PALSAR data to analyze topographical changes in mountainous area.
Keywords :
digital elevation models; earthquakes; geomorphology; geophysical image processing; image colour analysis; radar imaging; remote sensing by radar; topography (Earth); AD 2008; ALOS-PALSAR INSAR DEM; Iwate-Miyagi Nairiku earthquake; PALSAR data; RGB color composite image; SRTM image; change detection; coseismic landslide; landslide area; mountainous area; sliding length; sliding width; topographical change analysis; Earthquakes; Image color analysis; Interferometry; Land surface; Satellite broadcasting; Streaming media; Terrain factors; ALOS/PALSAR; SRTM-3; profile;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6049515
