EC_Q07.TIF - U.S. Atlantic East Coast EEZ GLORIA sidescan-sonar data mosaic (7 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5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）大陆架坡折向海一侧海域，以及从加拿大边境向南延伸至佛罗里达州外布雷克高原北部的区域。与此前的专属经济区普查航次一致，本次科考采用GLORIA侧扫声呐系统（Geological LOng-Range Inclined Asdic）完成地质填图工作。采集得到的GLORIA数据经处理与数字镶嵌后，生成了连续的海底地貌影像。最终针对美国大西洋大陆架边缘区域，共完成23幅覆盖面积为2°×2°（或更小）、像素分辨率达50米的数字镶嵌影像。