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EK60 Water Column Sonar Data Collected During DY1807
Acoustic-Trawl Survey of Walleye Pollock (Gadus chalcogrammus) on the U.S. Bering Sea shelf (DY1807, EK60). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA Fisheries, Alaska Fisheries Science Center (AFSC) conducted an acoustic-trawl (AT) stock assessment survey on the U.S. Bering Sea shelf (EBS) between Bristol Bay and the U.S.-Russia Convention Line between 6 June and 29 August 2018; the adjoining Russian portion of the EBS shelf was not surveyed. The survey was conducted aboard NOAA Ship Oscar Dyson, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation. The survey was conducted in three legs with the vessel departing Dutch Harbor, Alaska on 6 June and the cruise ending in Kodiak, Alaska on 26 August. The vessel departed Dutch Harbor on 6 June to begin leg 1 survey operations and ended leg 1 in Dutch Harbor on 28 June. The vessel departed Dutch Harbor on 1 July for leg 2 with survey operations conducted 3-7 July. A mechanical issue required the vessel to return to Dutch Harbor on 8 July ending leg 2. Following vessel repairs 8-23 July, the vessel departed Dutch Harbor on 25 July with survey operations for leg 3 conducted 25 July to 10 August and returning to Dutch Harbor on 11 August. Leg 3 continued with vessel departure from Dutch Harbor on 14 August and survey conducted 15-20 August. The vessel transited to Kodiak, Alaska 21-25 August and arrived in Kodiak on 26 August. The primary acoustic instrument for the survey was a Simrad EK60 split-beam echosounder system utilizing five frequencies (18, 38, 70, 120, and 200 kHz). The vessel conducted a pre-cruise acoustic system calibration in Captains Bay, Dutch Harbor, Alaska on 7 June and a post-cruise calibration in Kalsin Bay, Kodiak Island, Alaska on 25 August.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA National Centers for Environmental Information",
"@type": "vcard:Contact",
"hasEmail": "mailto:ncei.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Acoustic-Trawl Survey of Walleye Pollock (Gadus chalcogrammus) on the U.S. Bering Sea shelf (DY1807, EK60). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA Fisheries, Alaska Fisheries Science Center (AFSC) conducted an acoustic-trawl (AT) stock assessment survey on the U.S. Bering Sea shelf (EBS) between Bristol Bay and the U.S.-Russia Convention Line between 6 June and 29 August 2018; the adjoining Russian portion of the EBS shelf was not surveyed. The survey was conducted aboard NOAA Ship Oscar Dyson, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation. The survey was conducted in three legs with the vessel departing Dutch Harbor, Alaska on 6 June and the cruise ending in Kodiak, Alaska on 26 August. The vessel departed Dutch Harbor on 6 June to begin leg 1 survey operations and ended leg 1 in Dutch Harbor on 28 June. The vessel departed Dutch Harbor on 1 July for leg 2 with survey operations conducted 3-7 July. A mechanical issue required the vessel to return to Dutch Harbor on 8 July ending leg 2. Following vessel repairs 8-23 July, the vessel departed Dutch Harbor on 25 July with survey operations for leg 3 conducted 25 July to 10 August and returning to Dutch Harbor on 11 August. Leg 3 continued with vessel departure from Dutch Harbor on 14 August and survey conducted 15-20 August. The vessel transited to Kodiak, Alaska 21-25 August and arrived in Kodiak on 26 August. The primary acoustic instrument for the survey was a Simrad EK60 split-beam echosounder system utilizing five frequencies (18, 38, 70, 120, and 200 kHz). The vessel conducted a pre-cruise acoustic system calibration in Captains Bay, Dutch Harbor, Alaska on 7 June and a post-cruise calibration in Kalsin Bay, Kodiak Island, Alaska on 25 August. |
| distribution |
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"title": "Water Column Sonar Data Map Viewer",
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"description": "Interactive map viewer to allow discovery and access to water column sonar data",
"downloadURL": "https://www.ncei.noaa.gov/maps/water-column-sonar/index.html?surveys=DY1807&instruments=EK60",
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{
"@type": "dcat:Distribution",
"title": "Water Column Sonar Data Archive Homepage",
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"downloadURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords",
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"title": "International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)",
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|
| identifier | gov.noaa.ncei.wcd:DY1807_EK60 |
| issued | 2018-06-06T00:00:00.000+00:00 |
| keyword |
[
"Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering",
"Earth Science > Oceans > Aquatic Sciences > Fisheries",
"Earth Science > Oceans > Ocean Acoustics",
"Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic",
"Earth Science > Biosphere > Ecosystems > Marine Ecosystems",
"Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic",
"Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems",
"Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry",
"Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography",
"Bering Sea",
"DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
"DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce",
"DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Vertical Location > Water Column",
"In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System"
]
|
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2019-05-30T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, otherRestrictions |
| spatial | -151.99832,53.84462,-177.17585,63.00567 |
| temporal | 2018-06-06T15:25:02+00:00/2018-08-26T04:50:37+00:00 |
| title | EK60 Water Column Sonar Data Collected During DY1807 |
