Abstract
A strong low-pressure system traveled along Japanese Main Island in October 2006. High waves and storm surge attacked Kashima Coast resulting huge erosion over the area. This study analyzes sand loss in sub-aerial zone of southern part of the coast, a stretch of 16 km from Kashima Port to Tone River, using airborne laser data measured in October 2005 and November 2006, and X-band radar images captured during the storm. Longshore distribution of cross sectional change has been estimated from the laser data. Eroded volume of sub-aerial zone was estimated as 600, 000 m3. Pattern of erosion was controlled by headlands in the southern section, and by drainages in the northern section. Shoreline position during the storm has been digitized from radar images with locations of scarps read from aerial imagery.
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