CYM_250M_MER_NAD27.TIF - Cayman Trough GLORIA sidescan-sonar composite mosaic (MER, 250 m, Clarke 1866)

• 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; Woods Hole Science Center; WHSC; Geological LOng-Range Inclined Asdic; GLORIA; GeoTIFF image; grey scale image; sidescan-sonar mosaic; composite mosaic; backscatter; acoustic reflectivity; marine geology; 250-meter; Albers Equal Area; Exclusive Economic Zone; EEZ; WHSC serial number 85037; WHSC cruise identifier FRNL87-3B; Infobank identifier F-3B-85-CB; 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; sidescan sonar; marine geophysics; image mosaics; sea-floor characteristics; sea-floor acoustic reflectivity; Caribbean Sea; Cayman Trough; Ocean; Ocean > Atlantic Ocean; Ocean > Atlantic Ocean > North Atlantic Ocean; Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea; Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Cayman Islands; North Atlantic
• Online Access: https://search.dataone.org/view/7b104e4d-f2e7-40b6-902c-2eb2444aadd6

From October 22 to November 22, 1985 the U.S. Geological Survey (USGS) conducted a single to survey to ensonify the Cayman Trough. The survey took place over the coastal region of the spreading ridge and along one line to the eastern extremity of the Trough. 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. Two digital mosaics of a 2 degree by 2 degree area with a 50-meter pixel resolution were completed for the Cayman Trough south of the Cayman Islands.