EC_Q20.TIF - U.S. Atlantic East Coast EEZ GLORIA sidescan-sonar data mosaic (20 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边缘专属经济区（Exclusive Economic Zone, EEZ）大陆架外侧海域，北起加拿大边境，南至佛罗里达州外的北布莱克高原。与此前的专属经济区勘测普查航次一致，美国地质调查局采用GLORIA旁侧声呐系统（Geological LOng-Range Inclined Asdic）完成了地质填图工作。所采集的GLORIA数据经处理与数字镶嵌后，生成了连续的海底地貌影像。本次作业共为美国大西洋大陆边缘区域完成23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。