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MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data
The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 100 or 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise, except for areas where topographic variation dictated a greater than 200 meter record window. The resulting data records were 131 or 261 msec long, with a sample interval 0.038 msec. The ping rate varied over the course of the cruise, generally between 4 and 6 seconds.
Resources
5 resources available
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Metadata Landing Page
TEXT/HTML -
Trackline Geophysical Data Viewer
TEXT/HTML -
Request Trackline Data
TEXT/HTML -
Global Change Master Directory (GCMD) Keywords
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 | The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 100 or 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise, except for areas where topographic variation dictated a greater than 200 meter record window. The resulting data records were 131 or 261 msec long, with a sample interval 0.038 msec. The ping rate varied over the course of the cruise, generally between 4 and 6 seconds. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Metadata Landing Page", "accessURL": "https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler/html", "mediaType": "text/html", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Trackline Geophysical Data Viewer", "accessURL": "https://maps.ngdc.noaa.gov/viewers/geophysics/", "mediaType": "text/html", "description": "An interactive map of tracklines providing access to marine geophysical survey data (bathymetry, gravity, magnetics, seismics), and aeromagnetic surveys in the archive.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Request Trackline Data", "accessURL": "https://www.ngdc.noaa.gov/trackline/request/?surveyIds=MGL1111", "mediaType": "text/html", "description": "Download seismic data from this cruise.", "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": "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/Seismic/iso/xml/MGL1111_SubbottomProfiler.xml |
| isPartOf | MGL1111 |
| issued | 2011-08-08T00:00:00.000+00:00 |
| keyword |
[ "Seismic:Active:Subbottom", "Seismic:Reflection", "Other", "DigitalSeg:DigitallyAcquired", "[1495] Bowers Ridge", "[1494] Shirshov Ridge", "[1493] Aleutian Basin", "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce", "UNH/CCOM-JHC > Center for Coastal and Ocean Mapping - Joint Hydrographic Center, University of New Hampshire" ] |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2011-08-08T00:00:00.000+00:00 |
| publisher |
{ "name": "NOAA National Centers for Environmental Information", "@type": "org:Organization" } |
| rights | otherRestrictions, otherRestrictions |
| spatial | -166.47889,53.89308,174.12081,58.82082 |
| temporal | 2011-08-08T00:00:00+00:00/2011-09-02T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data |
