Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce
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These data contain shipboard bioacoustics data collected in the Pacific, both pelagic and near shore environments. Data is collected using Simrad EK60 splitbeam multifrequency systems with the transducers pointing vertically down in the water column. For pelagic surveys, the echosounders operate up to three frequencies at 38 kHz, 70 kHz, and 120 kHz, while in insular environments data are available at up to four frequencies with the addition of a 200 kHz channel.