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Postprocessing of scientific echo-sounder data from the NOAA ships Albatross IV and HB Bigelow, 1998 - 2012
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    "Acoustic data collected on the Albatross IV and HB Bigelow have primarily been collected during the NEFSC bottom trawl surveys. Acoustic data were rarely collected during other surveys on the Albatross IV and occasionally during other surveys on the HB Bigelow . The bottom trawl surveys are conducted during winter, spring, and fall (the winter survey was discontinued in 2008) and are the primary fisheries-independent surveys in mid-Atlantic and New England waters. The bottom trawl survey typically begins near Cape Hatteras, North Carolina, and works northward covering the continental shelf to Nova Scotia, Canada in about an 8-10 week period. The general strategy of data acquisition was to begin recording data when the vessel departed port and end recording when the vessel returned to port. This strategy was, in general, successful. There were, however, numerous times when data were not recorded, or sufficient data were not recorded, or the data were lost. Beginning in 2014, EK60 acoustic data will be archived by NOAA's National Geophysical Data Center (NGDC)"--Introduction. [ doi:10.7289/V5F18WQP (http://dx.doi.org/10.7289/V5F18WQP)]
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