@ ŒfÚŽGŽi˜ajF - VolF 32-1Šª ”NF 1989”N •ÅF 103-112•Å ’˜ŽÒi˜ajF - ƒ^ƒCƒgƒ‹i˜ajF - ´˜^i˜ajF
- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF COASTAL ENGINEERING IN JAPAN ’˜ŽÒi‰pjF Takujiro MIYAMOTO, Shigeru YOSHINAGA, Fujio SOGA, Kenkichi SHIMIZU, Ryoichi KAWAMATA, Mineo SATO ƒ^ƒCƒgƒ‹i‰pjF SEISMIC PROSPECTING METHOD APPLIED TO THE DETECTION OF OFFSHORE BREAKWATER UNITS SETTILING IN THE SEABED ´˜^i‰pjF
In solving a problem of offshore breakwater subsidence, it is important to investigate the shape of an existing breakwater whose crown has been repeatedly raised in the past. In this context, a series of observations were performed at the west coast of Niigata from 1984 to 1985, where seismic prospecting provided a reasonable estimate of breakwater cross sections under the water level as well as under the sea bottom. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@ˆÏˆõ‰ï˜_•¶W