EC_Q23.TIF - U.S. Atlantic East Coast EEZ GLORIA sidescan-sonar data mosaic (23 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）先后开展五次巡航作业，作业覆盖美国大西洋大陆架边缘向海一侧的专属经济区（Exclusive Economic Zone, EEZ）海域，范围北起美加边境，向南延伸至佛罗里达州外的布雷克高原北部。与此前的EEZ普查航次一致，本次作业使用GLORIA（地质远程倾斜声呐成像系统，Geological LOng-Range Inclined Asdic）侧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。针对美国大西洋大陆架边缘海域，本次任务共完成23幅覆盖范围为2°×2°（或更小）、像素分辨率达50米的数字镶嵌影像。