Detection of Crustal Movements in the 2011 Tohoku, Japan Earthquake Using High-resolution Sar Data
نویسندگان
چکیده
Significant crustal movements were caused by the 2011 Tohoku, Japan Earthquake. A method for capturing the surface movements from TerraSAR-X intensity images is proposed in this study. First, the buildings were extracted from the preand post-event images using a segmentation approach. Then, the unchanged buildings were detected by matching the buildings in the preand post-event images at similar locations. Finally, the shifts were calculated and considered as crustal movements. The method was tested and its result was compared with GPS observation records. The proposed method was found to be able to detect crustal movement at a subpixel level.
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