EC_Q02.TIF - U.S. Atlantic East Coast EEZ GLORIA sidescan-sonar data mosaic (2 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）开展了五次科考航次，作业范围覆盖美国大西洋大陆边缘大陆架外缘向海一侧的专属经济区（Exclusive Economic Zone, EEZ），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，USGS采用GLORIA（Geological LOng-Range Inclined Asdic，地质长距离倾斜声学成像声呐）侧扫声呐系统完成地质填图工作。所采集的GLORIA数据经过处理与数字镶嵌，生成了连续的海底地貌影像。本次作业共为美国大西洋大陆边缘区域完成23幅面积为2°×2°（或更小）、像素分辨率为50米的数字镶嵌影像。