This work was made possible with the help of technical staff of the acoustical oceanography group at the Institute of Ocean Sciences, and with the support of the U.S. Office of Naval Research and the Canadian Natural Sciences and Engineering Council. We are indebted to the crews of RV Parizeau, RV Tully, and RV Wecoma for assistance in deployment and recovery of the instrumentation. Dr. Marsden provided the directional wave measurements for the 25 February 1992 deployment; Dr. J. Edson provided the meteorological data for 18 April 1995. We thank Drs. C. Garrett, R. Lueck, and J. Moum for helpful discussions and the reviewers for their constructive comments.
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