Data provided by National Oceanic and Atmospheric Administration
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.
About this Dataset
Updated: 2024-02-22
Metadata Last Updated:
2025-11-19T16:19:18.638Z
Date Created:
N/A
Data Provided by:
Dataset Owner:
N/A
| Title | MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data |
|---|---|
| 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. |
| Modified | 2025-11-19T16:19:18.638Z |
| Publisher Name | N/A |
| Contact | N/A |
| Keywords | 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 , DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS , DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL , DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING |
{
"identifier": "gov.noaa.ngdc.mgg.seismic:MGL1111_SubbottomProfiler",
"accessLevel": "public",
"contactPoint": {
"@type": "vcard:Contact",
"fn": "Your contact point",
"hasEmail": "mailto:[email protected]"
},
"programCode": [
"010:000"
],
"landingPage": "",
"title": "MGL111 Chirp - US Extended Continental Shelf Project: Bering Sea CHIRP High-Resolution Seismic Profile Data",
"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.",
"language": "",
"distribution": [
{
"@type": "dcat:Distribution",
"mediaType": "application\/json",
"accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ngdc.mgg.seismic%3AMGL1111_SubbottomProfiler"
},
{
"@type": "dcat:Distribution",
"mediaType": "text\/html",
"accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ngdc.mgg.seismic%3AMGL1111_SubbottomProfiler\/html"
},
{
"@type": "dcat:Distribution",
"mediaType": "application\/xml",
"accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ngdc.mgg.seismic%3AMGL1111_SubbottomProfiler\/xml"
},
{
"@type": "dcat:Distribution",
"mediaType": "application\/octet-stream",
"accessURL": "https:\/\/gis.ngdc.noaa.gov\/arcgis\/rest\/services\/web_mercator\/trackline_combined_dynamic\/MapServer"
},
{
"@type": "dcat:Distribution",
"mediaType": "application\/octet-stream",
"accessURL": "https:\/\/gis.ngdc.noaa.gov\/arcgis\/services\/web_mercator\/trackline_combined_dynamic\/MapServer\/WMSServer?request=GetCapabilities&service=WMS"
},
{
"@type": "dcat:Distribution",
"mediaType": "application\/octet-stream",
"accessURL": "https:\/\/gis.ngdc.noaa.gov\/arcgis\/rest\/services\/web_mercator\/trackline_combined_dynamic\/MapServer"
},
{
"@type": "dcat:Distribution",
"mediaType": "application\/octet-stream",
"accessURL": "https:\/\/gis.ngdc.noaa.gov\/arcgis\/services\/web_mercator\/trackline_combined_dynamic\/MapServer\/WMSServer?request=GetCapabilities&service=WMS"
}
],
"bureauCode": [
"010:04"
],
"modified": "2025-11-19T16:19:18.638Z",
"publisher": {
"@type": "org:Organization",
"name": "Your Publisher"
},
"theme": "",
"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",
"DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS",
"DATA MANAGEMENT\/DATA HANDLING > DATA SEARCH AND RETRIEVAL",
"DATA ANALYSIS AND VISUALIZATION > VISUALIZATION\/IMAGE PROCESSING"
]
}
