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AMLR_krill-densities_2001-2011

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2023-02-07T00:00:00.000+00:00
Acoustic densities of Antarctic krill in Scotia Sea from 01162001 to 03032011. Data were collected from research vessels using either Simrad EK500 (years 2001-2004) or Simrad EK60 (2005-2011) echosounders operating at 3 different frequencies (38, 120, and 200 kHz). Raw acoustic data were collected from calibrated echosounders and archived on the vessel and later on shore-based servers. The datasets were ultimately returned to the SWFSC for QA/QC, archiving and review. Krill were identified from these acoustic data using the distorted-wave Born approximation. (Reiss et al., 2008; Fielding et al., 2011). Data were exported using Echoview into gridded bins 5 m deep by 100 m horizontal over a total depth range of 5 m to a maximum of 505 m below the hulls of survey vessels.

Resources

6 resources available

  • Water Column Sonar Data Map Viewer

    PLACEHOLDER/VALUE
  • AWS Cloud Storage Bucket

    PLACEHOLDER/VALUE
  • Water Column Sonar Data Archive Homepage

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

    PLACEHOLDER/VALUE
  • Global Change Master Directory (GCMD) Keywords

    PLACEHOLDER/VALUE
  • NCEI Contact Information

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