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EK80 Water Column Sonar Data Collected During SME120-201901 Deployment

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 09:08 PM | Dataset Last Updated: April 02, 2024 at 12:00 AM
A bottom moored echosounder was deployed at 116.3 m depth in the NW Bering Sea (61.36881 N, 177.17 W) from 26 July 2019 to 31 August 2020. The mooring was instrumented with a battery powered EK80 wideband autonomous transceiver (WBAT, Simrad AS). The echosounder operated an upwards facing depth-rated 70 kHz 18° split-beam transducer (ES70-18CD), positioned upward with a two-axis gimbal equipped with a 0.7 kg counterweight. During the deployment, the WBAT was programmed to transmit an ensemble of 320 narrowband and 35 wideband every two hours. Data were recorded to a range of 155 m. Calibrations had occured in Seattle, Washington either prior to deployment or after recovery using a 38.1-mm tungsten carbide sphere following the standard sphere method (Demer et al., 2015).

Resources

6 resources available

  • Water Column Sonar Data Map Viewer

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  • AWS Cloud Storage Bucket

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  • Water Column Sonar Data Archive Homepage

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  • Global Change Master Directory (GCMD) Keywords

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  • International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)

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  • NCEI Contact Information

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