2006年秋季暴浪による鹿島灘の侵食とその沿岸分布に関する考察

摘要

Strong low-pressure systems traveled along Japanese Main Island in October 2006. High waves and storm surge attacked Kashima Coast resulting huge erosion over the area. Airborne laser data measured in October 2005 and November 2006 have been analyzed to estimate cross-sectional changes within the subaerial zone. The results indicate that the amount of the erosion of the northern and southern parts decreased toward the south which may be raised due to the activation of longshore sediments. The SWAN wave model was applied to estimate wave condition along the coast during the storm event hours. The longshore component of wave power and run-ups are estimated and showed a correlation with the survey results, especially for the areas without coastal works.