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Echosounder data archive

Published by Southwest Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 18, 2025 | Last Modified: 2015-01-01T00:00:00.000+00:00
An archive of multi-frequency and multi-beam echosounder data (Simrad .raw format), collected as part of SWFSC-FRD surveys of the U.S. west coast between San Diego, CA and Vancouver Island, BC. The archive contains echo power and inerferometric-phase-angle data that describe acoustic backscatter from marine organisms ranging in size from zooplankton to fish.

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