Estimation of orbital velocities of internal waves of short period and large amplitudes

Abstract

A measurement method is presented to determine the horizontal orbital velocity component of the internal waves of the sea with very large amplitude from a ship in motion. The method is based on the frequency response of the slowdown of the ship and the analysis of oscillations recorded on the relative velocity log while sailing across a field of internal waves. Application to data collected over some banks in the Central Indian Ocean are discussed.