EK60 Water Column Sonar Data Collected During AR21

Description

Cruise AR21 on RV Neil Armstrong (EK60). This cruise is the fourth cruise to the Irminger Sea Global Node of the National Science Foundation’s Ocean Observatories Initiative (OOI; http://www.oceanobservatories.org). The Irminger Sea Global Node includes an array of four moorings and a combination of patrol and profiling gliders deployed off the southeast tip of Greenland, close to 39°W, 60°N. The location is one characterized by strong air-sea interaction and winter-time water mass formation. It is also a location at an important location of the large-scale global thermohaline circulation where freshening of the water column has been observed, and the data from the array will contribute to improved understanding of the impact of climate variability and change on the physics, chemistry, and biology of the ocean. The combination of the moored array and the gliders will enable investigation of the role of processes at mesoscale and submesoscale horizontal length scales. At the same time, the moored array and gliders will sample the full water column, from the sea floor to the sea surface and the surface mooring will provide unique new observations of surface meteorology and air-sea fluxes. This Irminger Sea Global Node deployment cruise (Irminger-4) has the following primary objectives: deployment of a new Surface Mooring (GI01SUMO), deployment of a new Profiler Mooring (GI02HYPM), deployment of two new Flanking Moorings (GI03FLMA, GI03FLMB), deployment of new Irminger Sea mobile assets (GI05MOAS) with the deployment of gliders tasked to patrol within and around the moored array, recovery of the Surface Mooring, Profiler Mooring, and Flanking Moorings set in July 2016, and CTD casts with water sampling at both for instrument calibration and to further characterize the region of the mooring sites. The intent is to deploy the fourth set of moorings before recovering the previously deployed third set of moorings. This is done to obtain data sets invaluable to the process of intercalibrating the moored instrumentation. Because of this and because the intent is to have future mooring operations to be conducted in close proximity to moorings in the water, the site locations for both the first and second deployments were identified during the bathymetric survey on the first cruise in September 2014.

Resources

Name Format Description Link
0 Web page containing information on the water column sonar data archive. https://www.ngdc.noaa.gov/mgg/wcd/
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 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://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords
0 Interactive map viewer to allow discovery and access to water column sonar data http://maps.ngdc.noaa.gov/viewers/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://earthdata.nasa.gov/earth-observation-data/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://earthdata.nasa.gov/earth-observation-data/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://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords

Tags

  • water column
  • vertical location
  • acoustic scattering
  • water column mapping system
  • benthic
  • ecosystems
  • nesdis
  • biosphere
  • bathymetry
  • in situ/laboratory instruments
  • oceans
  • national geophysical data center
  • noaa
  • marine ecosystems
  • aquatic sciences
  • u.s. department of commerce
  • profilers/sounders
  • earth science
  • acoustic sounders
  • doc/noaa/nesdis/ngdc
  • bathymetry/seafloor topography
  • aquatic ecosystems
  • doc/noaa/nesdis/ncei
  • fisheries
  • pelagic
  • wcms
  • north atlantic ocean
  • seafloor topography
  • national centers for environmental information
  • ocean acoustics

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