BS_250M_LCC_NAD27.TIF - Bering Sea U.S. EEZ GLORIA sidescan-sonar composite mosaic (LCC, 250 m, Clarke1866)

• Main Author: U.S. Geological Survey
• Format: Dataset
• Language: unknown
• Published: USGS Science Data Catalog 2011
• Subjects: U.S. Geological Survey; USGS; Coastal and Marine Geology Program; CMGP; Western Coastal and Marine Geology; WCMG; Geological LOng-Range Inclined Asdic; GLORIA; GeoTIFF image; grey scale image; sidescan-sonar mosaic; composite mosaic; backscatter; acoustic reflectivity; marine geology; 250-meter; Lambert Conformal Conic; Exclusive Economic Zone; EEZ; field activity number F-2-86-BS; field activity number F-3-86-BS; field activity number F-4-86-BS; field activity number F-1-87-BS; oceans; oceans and estuaries; oceans and coastal; geoscientificInformation; imageryBaseMapsEarthCover; Oceans > Ocean Acoustics > Acoustic Reflectivity; ACOUSTIC RECEIVERS; GLORIA > Geological Long-Range Inclined ASDIC; SIDE-SCAN SONAR; distributions; physical habitats and geomorphology; seabed; Exclusive Economic Zone (EEZ); sidescan sonar; marine geophysics; image mosaics; sea-floor characteristics; sea-floor acoustic reflectivity; Alaska; Bering Sea; Bowers Ridge; Aleutian Basin; Umnak Plateau; Zhemchug Canyon; Pribilof Canyon; Little Sitkin Island; Semisopochnoi Island; Aleutian Ridge; Bering Fan; Bering Channel; Bering Canyon; Beringian margin; Buldir Island; Attu Island; Agattu Island; Shemya Island; Oceans > Pacific Ocean > North Pacific Ocean > Bering Sea; Pacific; Bowers; Agattu; Attu
• Online Access: https://search.dataone.org/view/d4b66b67-2205-488c-9dca-a0772692c289

From 1986 through 1989, the USGS and IOS (Institute of Oceanographic Sciences, U.K.) scientists conducted several surveys within the U.S. EEZ off Alaska. Four surveys during that time period focused on the Bering Sea region. 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 sea-floor. The results of these surveys were 30 digital mosaics of a 2 degree by 2 degree area with a 50-meter pixel resolution.