GAK_Q51.TIF - Gulf of Alaska U.S. EEZ GLORIA sidescan-sonar data mosaic (21 of 30) (LCC, 50 m, WGS84)
GLORIA data for the Gulf of Alaska Exclusive Economic Zone (EEZ) were acquired during five cruises over a four year period. The first cruise conducted in 1986 (F-1-86-GA) surveyed an area of the north-central mosaic area and covered an area of approximately 40,000 square kilometers (sq km). The second two cruises (F-8-88-AA, F-9-88-WG) were conducted in 1988. One of the 1988 cruises (F-8-88-AA) focused on a survey of the Aleutian Arc. The eastern most portion of that survey extended outside of the Aleutian Arc survey area and covered an area of approximately 52,000 square kilometers (sq km) of seafloor on the western edge of the Gulf of Alaska. The final two cruises (F-6-89-GA, F-7-89-EG) were completed in 1989. As in earlier EEZ reconnaissance surveys, the USGS utilized the GLORIA (Geological LOng-Range Inclined Asdic) sidescan-sonar system to complete the geologic mapping. The collected GLORIA data were processed and digitally mosaicked to produce continuous imagery of the seafloor. Thirty digital mosaics with a 50-meter pixel resolution were completed for the region.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Florence Wong", "@type": "vcard:Contact", "hasEmail": "mailto:fwong@usgs.gov" } |
| description | GLORIA data for the Gulf of Alaska Exclusive Economic Zone (EEZ) were acquired during five cruises over a four year period. The first cruise conducted in 1986 (F-1-86-GA) surveyed an area of the north-central mosaic area and covered an area of approximately 40,000 square kilometers (sq km). The second two cruises (F-8-88-AA, F-9-88-WG) were conducted in 1988. One of the 1988 cruises (F-8-88-AA) focused on a survey of the Aleutian Arc. The eastern most portion of that survey extended outside of the Aleutian Arc survey area and covered an area of approximately 52,000 square kilometers (sq km) of seafloor on the western edge of the Gulf of Alaska. The final two cruises (F-6-89-GA, F-7-89-EG) were completed in 1989. As in earlier EEZ reconnaissance surveys, the USGS utilized the GLORIA (Geological LOng-Range Inclined Asdic) sidescan-sonar system to complete the geologic mapping. The collected GLORIA data were processed and digitally mosaicked to produce continuous imagery of the seafloor. Thirty digital mosaics with a 50-meter pixel resolution were completed for the region. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://pubs.usgs.gov/of/2010/1332/htmldocs/gak/gak_indexmap.html", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.50470256-c0cc-4a4b-b55f-2987605fc598.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_50470256-c0cc-4a4b-b55f-2987605fc598 |
| keyword |
[ "ACOUSTIC RECEIVERS", "Abyssal/Submarine Fan", "Alaska", "Alaskan Abyssal Plain", "Aleutian Abyssal Plain", "Aleutian Trench", "British Columbia Margin", "CMGP", "Chirikof Channel", "Coastal and Marine Geology Program", "Continental/Island Rise", "Continental/Island Slope", "EEZ", "Exclusive Economic Zone", "Exclusive Economic Zone (EEZ)", "GLORIA", "GLORIA > Geological Long-Range Inclined ASDIC", "GeoTIFF image", "Geological LOng-Range Inclined Asdic", "Gulf of Alaska", "Gulf of Alaska Ecoregion", "Infobank identifier F-1-86-GA", "Infobank identifier F-6-89-GA", "Infobank identifier F-7-89-EG", "Infobank identifier F-8-88-AA", "Infobank identifier F-9-88-WG", "Kodiak-Bowie seamount chain", "Marine Basin Floor", "Marine Oceanic", "North American Pacific Fijordland Ecoregion", "Ocean > Pacific Ocean", "Ocean > Pacific Ocean > North Pacific Ocean", "Ocean > Pacific Ocean > North Pacific Ocean > Gulf Of Alaska", "Oceans > Ocean Acoustics > Acoustic Reflectivity", "Queen Charlotte Fault", "SIDE-SCAN SONAR", "Surveyor Channel", "Tectonic Trench", "U.S. Geological Survey", "USGS", "USGS:50470256-c0cc-4a4b-b55f-2987605fc598", "WCMG", "Western Coastal and Marine Geology", "Yakutat Margin", "acoustic reflectivity", "backscatter", "distributions", "geoscientificInformation", "grey scale image", "image mosaics", "imageryBaseMapsEarthCover", "marine geology", "marine geophysics", "oceans", "physical habitats and geomorphology", "sea-floor acoustic reflectivity", "sea-floor characteristics", "seabed", "sidescan sonar", "sidescan-sonar mosaic" ] |
| modified | 2021-11-11T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -144.000000, 53.962174, -140.766318, 57.034925 |
| theme |
[ "geospatial" ] |
| title | GAK_Q51.TIF - Gulf of Alaska U.S. EEZ GLORIA sidescan-sonar data mosaic (21 of 30) (LCC, 50 m, WGS84) |
