AMLR_krill-densities_2001-2011

Description

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

Name Format Description Link
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
33 Publication of Sea Areas is maintained by IHO. http://www.iho-ohi.net/iho_pubs/standard/S-23/S23_1953.pdf
0 AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD) https://registry.opendata.aws/ncei-wcsd-archive/
0 Web page containing information on the water column sonar data archive. https://www.ngdc.noaa.gov/mgg/wcd/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
0 Interactive map viewer to allow discovery and access to water column sonar data https://www.ncei.noaa.gov/maps/water-column-sonar/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords

Tags

  • water column
  • vertical location
  • water column mapping system
  • nesdis
  • in situ/laboratory instruments
  • scotia sea
  • national geophysical data center
  • noaa
  • u.s. department of commerce
  • profilers/sounders
  • acoustic sounders
  • doc/noaa/nesdis/ngdc
  • doc/noaa/nesdis/ncei
  • wcms
  • national centers for environmental information

Topics

Categories