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AA_Q27.TIF - Aleutian Arc U.S. EEZ GLORIA sidescan-sonar data mosaic (27 of 31) (LCC, 50 m, WGS84)

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: July 16, 2025 | Last Modified: 20211111
During late July through September 1987 and June and July 1988 the U.S. Geological Survey (USGS) conducted four cruises to cover the U.S. Exclusive Economic Zone (EEZ) region of the Aleutian Arc. 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. A total of 31 digital mosaics of a 3 degree by 3 degree (or smaller) area with a 50-meter pixel resolution were completed for the region.

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ACOUSTIC RECEIVERS Alaska Aleutian Arc Aleutian Islands Ecoregion Aleutian Trench Amchitka Island Bowers Basin Bowers Ridge CMGP Coastal and Marine Geology Program 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 Infobank identifier F-2-87-AA Infobank identifier F-3-87-AA Infobank identifier F-7-88-AA Infobank identifier F-8-88-AA Marine Basin Floor Marine Oceanic Ocean > Pacific Ocean Ocean > Pacific Ocean > North Pacific Ocean Ocean > Pacific Ocean > North Pacific Ocean > Aleutian Arc Oceans > Ocean Acoustics > Acoustic Reflectivity SIDE-SCAN SONAR Stalemate Ridge Tectonic Trench U.S. Geological Survey USGS USGS:e4f5be65-b03a-42bd-a28f-1c001bab02d8 WCMG Western Coastal and Marine Geology Zodiac Fan 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

Complete Metadata

@id http://datainventory.doi.gov/id/dataset/2ce4f4ed8761219b39231736b9f382f3
bureauCode 
[
  "010:12"
]
identifier USGS:e4f5be65-b03a-42bd-a28f-1c001bab02d8
spatial -168.384269,48.713115,-164.472727,51.279362
theme 
[
  "geospatial"
]

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