The Precursor Resolution At The Opto-acoustic Pulse Propagation In The Upper Ocean Layer

Recent observations of the acoustic signals generated by laser beam in the upper oceanlayer [Bukin, O.A., Il'ichev, V.I., Kiselyov, V.D., 19901 have shown differences in the shape of the detected pulses from the ones recorded in the laboratory studies for fresh water. Aprincipal feature whichdistinguishes the conditions of the full-scale experiment and the laboratory study is the presence of bubble plumes in the upper ocean layer. It's important to note that marked dispersion of the spectral components of the acoustic pulse are due to resonant scattering by gas bubbles.