Development of coastal acoustic tomography is carried out as a long term measurement technique to getshallow water information. Since sound is propagated with reflection at sea bed and sea surface, it is importantto estimate characteristics of sound propagation in shallow water. In this paper, we investigated thecharacteristic of the propagating sound wave using data of a reciprocal acoustic transmission experiment inUchiura Bay. Direct wave was used to estimate travel time and amplitude variation. We estimated watertemperature with high accuracy and observed that an amplitude fluctuation happened with a rapid change oftravel time. We got basic acoustic characteristics of reciprocal transmission signals that are useful for temperatureand current measurements in shallow water.
各種検索
サポート
ヘルプ