The Acoustic Surface Reverberation EXperiment (ASREX)

ASREX was an acoustic surface reverberation experiment that was performed in the North Atlantic Ocean during the winter of 1993-94. Observations of acoustic backscatter from the ocean surface were made from the central University of MIAMI mooring at frequencies ranging from 100 to 800 Hz at twelve minute intervals during a three month period. Simultaneous measurements were made by other investigators (from SIO, WHOI, and IOS - BC, Canada) of a variety of environmental parameters. Wind speed and direction, air and sea temperature and current fields were among those parameters measured at the DISCUS mooring. The SEATEX mooring measured wave spectra. The presence and nature of bubble clouds were observed with devices that detected anomalies in the near surface sound speed (MELVILLE mooring) and using high frequency side scan sonars (ELSI mooring). Interest in the results of this experiment comes from the acoustic, meteorological, and oceanographic communities as the data will extend our understanding of the physical mechanisms involved in acoustic backscatter from the ocean surface as well as interactions and mixing processes at the air-sea interface.

Work sponsored by the Office of Naval Research (ONR)

Original Principal Investigators:

Associated Scientists:

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