EC_Q11.TIF - U.S. Atlantic East Coast EEZ GLORIA sidescan-sonar data mosaic (11 of 23) (ACEA, 50 m, Clarke1866)

From February to May 1987 the U.S. Geological Survey (USGS) conducted five cruises to cover the U.S. Atlantic Continental Margin Exclusive Economic Zone (EEZ) seaward of the continental shelf edge, and from the Canadian border southward to the northern Blake Plateau off Florida. 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. Twenty-three digital mosaics of a 2 degree by 2 degree (or smaller) area with a 50-meter pixel resolution were completed for the U.S. Atlantic Continental Margin region.1987年2月至5月，美国地质调查局（U.S. Geological Survey，USGS）开展了五次科考巡航，作业范围覆盖美国大西洋大陆架边缘专属经济区（Exclusive Economic Zone，EEZ）的大陆架外缘海域，北起加拿大边境，南至佛罗里达州外的布雷克高原北部海域。与此前的EEZ普查航次一致，本次作业采用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制图工作。采集得到的GLORIA数据经过处理与数字镶嵌，生成了连续的海底影像。最终为美国大西洋大陆架边缘区域完成了23幅覆盖2°×2°（或更小）范围、像素分辨率为50米的数字镶嵌影像。