サイクロンSidrによるバングラデシュ海岸・河川高潮災害の現地調査

抄録

Field surveys were performed in the southwest of Bangladesh to learn lessons out of severe disasters due to Cyclone Sidr. Spatial distributions of inundation heights were measured around the most damaged area. Inundation heights along the Baleshwar river and the Burishwar river were relatively high compared to those observed on the coast of Kuakata although these sites are far from the coast. Detailed surveys were thus performed in these three areas and there found several residents who witnessed bore-like waves hitting on the damaged area. Embankments along the river had been eroded before the storm while dikes on the coast significantly functioned to reduce the damages of the coastal area behind.