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EK60 Water Column Sonar Data Collected During DY1202

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2016-06-01T00:00:00.000+00:00
Southeastern Aleutian Basin (Bogoslof Island) Acoustic-Trawl Survey of Walleye Pollock (DY1202, EK60). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA National Marine Fisheries Service (NMFS), Alaska Fisheries Science Center (AFSC) conducted acoustic-trawl (AT) stock assessment surveys in the Bogoslof Island area of the southeastern Aleutian Basin during the winter of 2012 to estimate the distribution and abundance of walleye pollock (Theraga chalcogramma). The surveys were conducted 5-15 March, departing from Kodiak, Alaska (4 March) and returning to Kodiak at the end of cruise DY1203 on 27 March; an intermediate personnel transfer was conducted in Kodiak on 19 March. The surveys were conducted aboard NOAA Ship Oscar Dyson, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation.

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