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HW1_Q24.TIF - Hawaii I - Southeastern Hawaiian Ridge U.S. EEZ GLORIA sidescan-sonar data mosaic (24 of 29) (LCC, 50 m, WGS84)

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: July 16, 2025 | Last Modified: 20211111
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.

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ACOUSTIC RECEIVERS Alika Slides CMGP Coastal and Marine Geology Program Continental/Island Rise Continental/Island Slope EEZ East Pacific Rise Exclusive Economic Zone Exclusive Economic Zone (EEZ) GLORIA GLORIA > Geological Long-Range Inclined ASDIC GeoTIFF image Geological LOng-Range Inclined Asdic Hawaii Hawaii Ecoregion Hawaii Islands Hawaiian Arch Hawaiian Deep Hawaiian Emperor Chain Hawaiian Ridge Hilina Slump Infobank identifier F-10-88-HW Infobank identifier F-12-89-HW Infobank identifier F-3-88-HW Infobank identifier F-4-88-HW Infobank identifier F-5-86-HW Infobank identifier F-5-88-HW Infobank identifier F-6-86-HW Infobank identifier F-6-88-HW Island of Hawaii Kauai Kauai Fracture Zone Loihi Seamount Marine Basin Floor Marine Oceanic Molokai Molokai Fracture Zone Necker Island Necker Ridge Nihoa Island Niihau Nuuanu-Wailou debris avalanches Oahu Ocean > Pacific Ocean Ocean > Pacific Ocean > Central Pacific Ocean Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands Oceans > Ocean Acoustics > Acoustic Reflectivity SIDE-SCAN SONAR Shemya Island U.S. Geological Survey USGS USGS:80ad12c0-c7ae-4861-8bc7-e5641d33a6db WCMG Western Coastal and Marine Geology acoustic reflectivity backscatter distributions geoscientificInformation grey scale image image mosaics imageryBaseMapsEarthCover marine geology marine geophysics oceans physical habitats and geomorphology sea-floor acoustic reflectivity sea-floor characteristics seabed sidescan sonar sidescan-sonar mosaic

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