Year: 2007
Type: article
Abstract: An ocean acoustic tomography experiment was carried out throughout the year 2000 with seven 200 Hz transceivers allocated in the area of 1100 × 1500 km 2 in the central equatorial Pacific Ocean. The arrival time of the signal propagating near a sound-channel axis was selected and the effect of distance fluctuation was eliminated by excluding the elapsed time to travel differential length from the mean ray length of the transceivers calculated on the basis of ray theory. The zonal current velocity of a pair of transceivers and meridional current velocity were estimated from the reciprocal arrival time of the transceivers, which was recorded using hydrophones without any handling. Both the zonal and meridional mean velocities at the sound-channel axis were lower than 20 cm/s. To examine the proper of the obtained results, the obtained zonal current was compared with that of calculated by another method and with the acoustic Doppler current profiler (ADCP) data obtained at the tropical atmosphere ocean (TAO) buoy.
DOI: 10.1143/jjap.46.4998
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1991992117