Abstract

We have conducted some measurements preliminary to the possible establishment of an environmental acoustic array off California. Some simultaneous two-way transmissions with sources and receivers at approximately 1 km depth and separated by 25 km will be discussed. For this geometry there exist essentially an upward path and a downward path; each has only a single turning point. At frequencies below a cycle per day we hope to use the array in a deterministic mode to study the drift of mesoscale eddies and intrusive features. At higher frequencies we expect to obtain information about the statistical properties of internal waves. Some preliminary results will be given.

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