论文信息 - Extraction of damaged buildings due to the 2011 Tohoku, Japan earthquake tsunami

Extraction of damaged buildings due to the 2011 Tohoku, Japan earthquake tsunami

The 11 March 2011 Tohoku, Japan earthquake caused gigantic tsunamis and widespread devastations. Various satellites quickly captured the details of affected areas, and were used for emergency response. In this study, high-resolution pre- and post-event TerraSAR-X (TSX) intensity images were used to identify damaged buildings. Since the damaged buildings show changes in backscattering intensity, they can be detected by calculating the difference. A GIS map was introduced to identify individual damaged buildings and investigate their characteristics. According to the side-looking nature of SAR sensors, the buildings' shapes obtained from the GIS map were converted to match their locations in the TSX images. Then washed-away and damaged buildings were extracted using the changed area of SAR intensity within a building's wall and outline. The results were compared with visual interpretation results, and the accuracy of the proposed method was confirmed.

[1] Wen Liu,et al. Detection of Crustal Movement From TerraSAR-X Intensity Images for the 2011 Tohoku, Japan Earthquake , 2013, IEEE Geoscience and Remote Sensing Letters.

[2] J. G. Liu,et al. EXTRACTION OF DAMAGED REGIONS USING SAR DATA AND NEURAL NETWORKS , 2010 .

[3] Ya-Qiu Jin,et al. Postearthquake Building Damage Assessment Using Multi-Mutual Information From Pre-Event Optical Image and Postevent SAR Image , 2012, IEEE Geoscience and Remote Sensing Letters.

[4] Shunichi Koshimura,et al. Mapping of Building Damage of the 2011 Tohoku Earthquake Tsunami in Miyagi Prefecture , 2012 .

[5] M. Koarai,et al. Landscape Ecological Mapping Using LIDAR Data for Biodiversity Evaluation Principal Investigator: Mamoru KOARAI Institution: Geospatial Information Authority of Japan (GSI) , 2010 .

[6] M. Matsuoka,et al. Building Damage Mapping of the 2003 Bam, Iran, Earthquake Using Envisat/ASAR Intensity Imagery , 2005 .

[7] Lorenzo Bruzzone,et al. Earthquake Damage Assessment of Buildings Using VHR Optical and SAR Imagery , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[8] Helko Breit,et al. TerraSAR-X SAR Processing and Products , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[9] W. Liu,et al. Detection of three-dimensional crustal movements due to the 2011 Tohoku, Japan earthquake from TerraSAR-X intensity images , 2012, Asia-Pacific Environmental Remote Sensing.