HW1_Q27.TIF - Hawaii I - Southeastern Hawaiian Ridge U.S. EEZ GLORIA sidescan-sonar data mosaic (27 of 29) (LCC, 50 m, WGS84)

Survey of the southeastern Hawaiian Ridge was the fifth major segment of the Exclusive Economic Zone (EEZ) mapping program to have been initiated. Data acquisition for this region required approximately one-half year and were acquired during eight cruises over a four year period from 1986 through 1989, skipping 1987. At the conclusion of the survey 29 mosaics of a 2 degree by 2 degree were completed for the region. 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. A total of twenty-seven digital mosaics of a 2 degree by 2 degree area and 2 mosaics of 2.25 degree by 2 degree with a 50-meter pixel resolution were completed for the region.

夏威夷海岭东南部勘测是专属经济区（Exclusive Economic Zone，EEZ）制图项目中第五个启动的主要分段。该区域的数据采集工作耗时约半年，于1986年至1989年的四年间通过8次巡航作业完成，期间未开展1987年的作业。勘测结束后，该区域共计完成29幅2°×2°规格的拼接影像。与早期专属经济区侦察勘测一致，美国地质调查局（United States Geological Survey，USGS）借助GLORIA（Geological LOng-Range Inclined Asdic，地质远程倾斜声呐）侧扫声呐系统完成了地质制图工作。所采集的GLORIA数据经处理与数字拼接后，生成了连续的海底影像。该区域最终共计完成27幅2°×2°区域的数字拼接影像，以及2幅2.25°×2°区域的拼接影像，所有影像的像素分辨率均为50米。