GMX_Q02.TIF - U.S. Gulf of Mexico EEZ GLORIA sidescan-sonar data mosaic (2 of 16) (ACEA, 50 m, Clarke1866)

During February 1982 and again from August 7 to October 22, 1985 the U.S. Geological Survey (USGS) conducted four cruises to cover the U.S. Gulf of Mexico Continental Margin Exclusive Economic Zone (EEZ) seaward of the continental shelf edge. 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 16 digital mosaics of a 2 degree by 2 degree (or smaller) area with a 50-meter pixel resolution were completed for the Gulf of Mexico region.

1982年2月，以及1985年8月7日至10月22日期间，美国地质调查局（U.S. Geological Survey，USGS）先后开展四次科考巡航，以覆盖大陆架边缘向海一侧的美国墨西哥湾大陆边缘专属经济区（Exclusive Economic Zone，EEZ）海域。与此前的EEZ普查勘测一致，本次科考中USGS采用GLORIA（地质远程倾斜旁扫声呐，Geological LOng-Range Inclined Asdic）旁扫声呐系统完成地质填图工作。采集得到的GLORIA数据经过处理与数字镶嵌，生成了连续的海底地貌影像。墨西哥湾海域范围内共计完成16幅覆盖2°×2°（或更小）区域、像素分辨率为50米的数字镶嵌影像。