METHOD FOR DETERMINING TIME CORRECTION FOR A DETECTOR PLACED ON THE SEABED

摘要

The invention relates to a method for determining, for a detector placed on the surface of the seabed, the vertical propagation time (t0) and the velocity of propagation V in the water of a wave emitted from an emission point within N, said method including: emitting a wave from the emission point; recording the wave received by the detector; determining the vertical propagation time t0 by means of equation (I), where tdir is the direct wave propagation time between the emission point and the detector, and tmul is the propagation time of the first multiple wave between the emission point and the detector; and determining the velocity of propagation V of the wave by means of equation (II), where X is the distance between the emission point and the water-surface point that is vertical to the detector.