HW1_Q05.TIF - Hawaii I - Southeastern Hawaiian Ridge U.S. EEZ GLORIA sidescan-sonar data mosaic (5 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.

夏威夷东南海岭勘测是专属经济区（Exclusive Economic Zone，EEZ）测绘计划启动的第五个核心分段项目。该区域的数据采集耗时约半年，在1986年至1989年的四年间分8次巡航完成，期间跳过了1987年。勘测结束后，该区域共完成29幅2°×2°的拼接图件。与早期EEZ踏勘勘测一致，美国地质调查局（USGS）采用GLORIA（Geological LOng-Range Inclined Asdic）侧扫声呐系统完成地质测绘工作。所采集的GLORIA数据经过处理与数字化拼接，生成了连续的海底地貌影像。该区域最终共完成27幅2°×2°区域的数字化拼接图，以及2幅2.25°×2°区域的拼接图，像素分辨率均为50米。