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Effect of Ground Subsidence to Beach Changes on Omaezaki Coast

2013; Volume: 69; Issue: 2 Linguagem: Inglês

10.2208/kaigan.69.i_666

1883-8944

Takaaki UDA, Toshiro SAN-NAMI, Toshinori ISHIKAWA, Yusuke ITO, Norifusa SHIRAISHI, Jun-ichiro Sato,

Coastal and Marine Dynamics

Shoreline changes along the coasts between the Tenryu River mouth and Point Omaezaki facing the Pacific Ocean were investigated using aerial photographs. Beach has been eroded on the coast located near the east end of the coastline far from the river mouth. Although beach erosion on the Ryuyo and Fukude coasts composing part of the Tenryu River delta was triggered by the decrease in fluvial sand supply and the obstruction of longshore sand transport by a port breakwater, beach erosion on a coast far from the river mouth was due to the effect of ground subsidence along with that of windblown sand.