Tokyo Bay Shore Areas liquefied in the M9.0 March 11th, 2011 Great east Japan EQ
The March 11th, 2011 Great East Japan Earthquake has shown that a long stretch of landfills along northeastern shorelines of the Tokyo Bay had very high susceptibility
to liquefaction, causing concerns about re-liquefactions of the area in the scenario earthquake expected in the capital's metropolitan area.
An attempt was made to detect soil subsidence from raster images converted from airborne LiDAR (Light Detection and Ranging) data before and after the earthquake.
To eliminate deep-seated tectonic displacements and systematic errors of LiDAR surveys, the template matching technique is used for clusters of pile-supported buildings and bridge piers chosen as templates in source images of the target areas.
The Google Earth tour flying about 1.5km over the liquefied Tokyo Bay Area from Urayasu to Chiba provides you with the spatial distribution of soil subsidence in great detail.