EK80 Water Column Sonar Data Collected During PC2101
NOAA Ship Pisces will conduct a survey of reef fish located on the US continental shelf and shelf-edge of the GOM from March 11 through May 27, 2021. Six hundred and eighteen sites have been selected for sampling with the Spherical/Satellite array, bandit reels and CTD during daylight hours; 460 in the western GOM and 158 in the eastern GOM (Figures 1 & 2). Individual sampling sites will be supplied prior to sailing. Mapping will be conducted at night at randomly selected areas near the following or previous day’s sampling.
Mapping operations:
Bathymetric mapping will be conducted in and around selected sites at night with the ME 70 sonar (Figures 1 & 2). Night-time mapping will commence at sunset, or when day operations have finished, in the general area of the sites sampled that day or the area planned for the next day. Mapping will be concluded at sunrise, or whatever time is needed, in order to be on site for operations the following morning. A CTD cast will be conducted prior to, during, and after acoustic transects to obtain speed-of-sound for proper processing of data. All other acoustic systems need to be secured prior to and during acoustic transects to eliminate acoustic contamination of the mapping data. If other systems are required to ensure safe transit while mapping, ensure that the acoustic signals are offset and not interfering with each other.
All transect lines for mapping will be composed in Hypack by the FPC and made available to the ship’s bridge. The mapping goal is to locate features within and outside our current universe to expand the sample universe as well as improve the ability for site selection by closing gaps created by mapping with less precise systems.
Camera operations will utilize up to three Spherical/Satellite camera arrays of which one is 48” tall, 40” diameter, (Figure 3) and the 2 others, 36” tall, 40” diameter (Figure 4). Each Spherical/Satellite camera array has a mounted Eureka Manta CTD which collects environmental parameters during soak time, two pressure housings (rated to 500 m), one containing six video cameras, which provide a near spherical field of view and the second containing the satellite camera. Camera 3 in the spherical housing will be paired with the satellite camera to obtain stereo measurements.
The Spherical/Satellite camera arrays will be deployed 1 h after sunrise, with the last retrieval 1 h prior to sunset. The arrays will be baited with mackerel and squid and soak on the seafloor for 30 minutes. In order to maximize sampling time, multiple Spherical/Satellite camera arrays (clusters of up to three) will be set consecutively. The clustered sites will be separated by a minimum of 0.2 nm and a maximum of 2 nm. This will ensure relatively quick and safe transit between individual sites. While the first camera array is soaking, the ship will proceed to the next two sites and deploy two additional arrays. Once the third camera array is in the water, the ship will retrieve the first deployment, then second and so on. As sea conditions change, retrieval order may be modified by bridge to avoid navigation issues (e.g. buoys in close proximity and changing currents).
Bandit reels will be deployed after each cluster (3) of cameras are retrieved. This will allow up to 3-4 bandit reel stations per day. During bandit reel operations, the reels are only to be deployed under the following conditions: 1) a member of the deck department and scientific party are both present at each reel, 2) the ship is in position in DP and stable with the OOD having notified as such and 3) the FPC has given the all clear for the reels to be baited and deployed.
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 | NOAA Ship Pisces will conduct a survey of reef fish located on the US continental shelf and shelf-edge of the GOM from March 11 through May 27, 2021. Six hundred and eighteen sites have been selected for sampling with the Spherical/Satellite array, bandit reels and CTD during daylight hours; 460 in the western GOM and 158 in the eastern GOM (Figures 1 & 2). Individual sampling sites will be supplied prior to sailing. Mapping will be conducted at night at randomly selected areas near the following or previous day’s sampling. Mapping operations: Bathymetric mapping will be conducted in and around selected sites at night with the ME 70 sonar (Figures 1 & 2). Night-time mapping will commence at sunset, or when day operations have finished, in the general area of the sites sampled that day or the area planned for the next day. Mapping will be concluded at sunrise, or whatever time is needed, in order to be on site for operations the following morning. A CTD cast will be conducted prior to, during, and after acoustic transects to obtain speed-of-sound for proper processing of data. All other acoustic systems need to be secured prior to and during acoustic transects to eliminate acoustic contamination of the mapping data. If other systems are required to ensure safe transit while mapping, ensure that the acoustic signals are offset and not interfering with each other. All transect lines for mapping will be composed in Hypack by the FPC and made available to the ship’s bridge. The mapping goal is to locate features within and outside our current universe to expand the sample universe as well as improve the ability for site selection by closing gaps created by mapping with less precise systems. Camera operations will utilize up to three Spherical/Satellite camera arrays of which one is 48” tall, 40” diameter, (Figure 3) and the 2 others, 36” tall, 40” diameter (Figure 4). Each Spherical/Satellite camera array has a mounted Eureka Manta CTD which collects environmental parameters during soak time, two pressure housings (rated to 500 m), one containing six video cameras, which provide a near spherical field of view and the second containing the satellite camera. Camera 3 in the spherical housing will be paired with the satellite camera to obtain stereo measurements. The Spherical/Satellite camera arrays will be deployed 1 h after sunrise, with the last retrieval 1 h prior to sunset. The arrays will be baited with mackerel and squid and soak on the seafloor for 30 minutes. In order to maximize sampling time, multiple Spherical/Satellite camera arrays (clusters of up to three) will be set consecutively. The clustered sites will be separated by a minimum of 0.2 nm and a maximum of 2 nm. This will ensure relatively quick and safe transit between individual sites. While the first camera array is soaking, the ship will proceed to the next two sites and deploy two additional arrays. Once the third camera array is in the water, the ship will retrieve the first deployment, then second and so on. As sea conditions change, retrieval order may be modified by bridge to avoid navigation issues (e.g. buoys in close proximity and changing currents). Bandit reels will be deployed after each cluster (3) of cameras are retrieved. This will allow up to 3-4 bandit reel stations per day. During bandit reel operations, the reels are only to be deployed under the following conditions: 1) a member of the deck department and scientific party are both present at each reel, 2) the ship is in position in DP and stable with the OOD having notified as such and 3) the FPC has given the all clear for the reels to be baited and deployed. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Water Column Sonar Data Map Viewer",
"mediaType": "placeholder/value",
"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=PC2101&instruments=EK80",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "AWS Cloud Storage Bucket",
"mediaType": "placeholder/value",
"description": "AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD)",
"downloadURL": "https://registry.opendata.aws/ncei-wcsd-archive/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Water Column Sonar Data Archive Homepage",
"mediaType": "placeholder/value",
"description": "Web page containing information on the water column sonar data archive.",
"downloadURL": "https://www.ngdc.noaa.gov/mgg/wcd/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Global Change Master Directory (GCMD) Keywords",
"mediaType": "placeholder/value",
"description": "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.",
"downloadURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)",
"mediaType": "placeholder/value",
"description": "Publication of Sea Areas is maintained by IHO.",
"downloadURL": "https://iho.int/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NCEI Contact Information",
"mediaType": "placeholder/value",
"description": "Information for contacts at NCEI.",
"downloadURL": "https://www.ncei.noaa.gov/contact",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.ncei:PC2101_EK80 |
| issued | 2021-03-11T00:00:00.000+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",
"Gulf of Mexico",
"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",
"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 | 2023-05-15T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, otherRestrictions |
| spatial | -79.77467,24.19001,-97.19899,30.36807 |
| temporal | 2021-03-11T00:00:00+00:00/2021-05-27T11:59:59+00:00 |
| title | EK80 Water Column Sonar Data Collected During PC2101 |
