M3 Water Column Sonar Data Collected During NOAA-MC20-Survey
In 2018, NOAA and its partners conducted a comprehensive assessment of the MC20 site. This data compilation contains ship-based surface echosounder surveys characterizing the spatial structure of the plumes. Data were collected using three frequency Simrad EK80 splibeam echosounders and Kongsberg M3 multibeam echosounder from a ship. Inspection of the acoustic backscatter indicates multiple plume components emitting from separate origins on the seafloor within an erosional pit at the northwest corner of the downed jacket. Broad-band acoustic frequency backscatter intensity suggests indicators of oil and gas plumes within the water column. Closer inspection using ROV-integrated three frequency Simrad EK80 splitbeam echosounders and Kongsberg M3 multibeam sonars confirm the presence of at least four plume sources emitting from the seafloor with acoustic signatures indicating oil separating from gas as well as oil and gas mixtures. In subsequent chapters, the separation of oil from gas from each of the seep sources was verified using in situ optical and direct capture methods. The assessment provides further evidence of an oil and gas leak that has likely occurred since the original toppling of the MC20 platform.
Resources
6 resources available
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Water Column Sonar Data Map Viewer
TEXT/HTML -
AWS Cloud Storage Bucket
TEXT/HTML -
Water Column Sonar Data Archive Homepage
TEXT/HTML -
Global Change Master Directory (GCMD) Keywords
TEXT/HTML -
International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
TEXT/HTML -
NCEI Contact Information
TEXT/HTML
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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 | In 2018, NOAA and its partners conducted a comprehensive assessment of the MC20 site. This data compilation contains ship-based surface echosounder surveys characterizing the spatial structure of the plumes. Data were collected using three frequency Simrad EK80 splibeam echosounders and Kongsberg M3 multibeam echosounder from a ship. Inspection of the acoustic backscatter indicates multiple plume components emitting from separate origins on the seafloor within an erosional pit at the northwest corner of the downed jacket. Broad-band acoustic frequency backscatter intensity suggests indicators of oil and gas plumes within the water column. Closer inspection using ROV-integrated three frequency Simrad EK80 splitbeam echosounders and Kongsberg M3 multibeam sonars confirm the presence of at least four plume sources emitting from the seafloor with acoustic signatures indicating oil separating from gas as well as oil and gas mixtures. In subsequent chapters, the separation of oil from gas from each of the seep sources was verified using in situ optical and direct capture methods. The assessment provides further evidence of an oil and gas leak that has likely occurred since the original toppling of the MC20 platform. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Water Column Sonar Data Map Viewer",
"accessURL": "https://www.ncei.noaa.gov/maps/water-column-sonar/index.html?surveys=NOAA-MC20-Survey&instruments=M3",
"mediaType": "text/html",
"description": "Interactive map viewer to allow discovery and access to water column sonar data",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "AWS Cloud Storage Bucket",
"accessURL": "https://registry.opendata.aws/ncei-wcsd-archive/",
"mediaType": "text/html",
"description": "AWS Cloud Storage provides additional public access to water column sonar data through the NOAA Big Data Project",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "Water Column Sonar Data Archive Homepage",
"accessURL": "https://www.ngdc.noaa.gov/mgg/wcd/",
"mediaType": "text/html",
"description": "Web page containing information on the water column sonar data archive.",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "Global Change Master Directory (GCMD) Keywords",
"accessURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords",
"mediaType": "text/html",
"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.",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)",
"accessURL": "https://iho.int/",
"mediaType": "text/html",
"description": "Publication of Sea Areas is maintained by IHO.",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "NCEI Contact Information",
"accessURL": "https://www.ncei.noaa.gov/contact",
"mediaType": "text/html",
"description": "Information for contacts at NCEI.",
"describedByType": "application/octet-stream"
}
]
|
| identifier | https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Sonar_Water_Column/iso/xml/NOAA-MC20-Survey_M3.xml |
| issued | 2018-09-01T00:00:00.000+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 | 2019-07-22T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, otherRestrictions |
| spatial | -88.93873,28.93249,-88.97506,28.94878 |
| temporal | 2018-09-01T00:00:00+00:00/2018-09-07T11:59:59+00:00 |
| title | M3 Water Column Sonar Data Collected During NOAA-MC20-Survey |
