Acoustic Tomography of Water Hydrophysical Structure in the Japan Sea

摘要

In September-October of 1999 under the JESAEX (Japan/East Sea Acoustic Experiment) project, in the coastal zone of the Japan Sea experimental studies were performed on the acoustic monitoring of water temperature variations. Using multiplex phase-manipulated signals comprising M-codes with the center frequencies 250, 366, 406 and 604 Hz, the water medium on stationary traces was insonified. During May-November 2000, a series of experiments were conducted with the aim of improving the instrument support for monitoring acoustic propagation using a two-way propagation technique of measuring ocean flows. The second part of our paper is devoted to monitoring a field of temperature, Experimental and theoretical cross-correlation functions among transmitting and receiving signals are used in one reconstruction method for identification of oceanographic parameters.