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U.S. Geological Survey Open-File Report 2010-1332

GLORIA Sidescan-Sonar Imagery for Parts of the U.S. Exclusive Economic Zone and Adjacent Areas


Hawaii III Field Activities

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Title Page
Introduction
Methods
Aleutian Arc
Atlantic Coast
Bering Sea
Cayman Trough
Gulf of Alaska
Gulf of Mexico
Hawaii I
Hawaii II
Hawaii III
  • Field Activities
  • Index Map & Data Links
  • Johnston Atoll
    Kingman-Palmyra
    Pacific Coast
    Puerto Rico
    Data Catalog
    Acknowledgments
    References
    List of Figures
    Contacts
    Hawaii III - Northwestern Hawaiian Ridge GLORIA sidescan-sonar mosaic.
    Figure 40. The U.S. EEZ Hawaii III Northwestern Hawaiian Ridge area GLORIA sidescan-sonar mosaic. Click to enlarge figure.

    Background

    The Hawaii III Northwestern Hawaiian Ridge GLORIA digital mosaic was the final area to be imaged and mosaicked for the U.S. Hawaiian EEZ area. Data for this region were acquired during six surveys during a consecutive three year time period from 1989 to 1991. When finished 22 50 m mosaics of approximately a 2-degree by 2-degree area were completed. The GLORIA image of the EEZ of the northwestern Hawaiian Ridge covers about 728,000 sq km of seafloor.

    The first survey (F-13-89-HW) was conducted from November 28 to December 21, 1989. The area surveyed was the outer part of the remaining territorial EEZ on the south side of the Hawaiian Ridge on the eastern end at about 167oW and extending to the limit of the EEZ beyond Kure Island.

    The following two cruises (F-1-90-HW and F-2-90-HW) were completed consecutively from January 3 to 28, and January 29 to February 22, 1990. These cruises were run parallel to one another trending west-northwest and east-southeast south of the Hawaiian Ridge and north of F-13-89-HW to fill gaps left by previous cruises (Kayen and others, 1990; Pickthorn and others, 1991; Dadisman and others, 1992).

    The three remaining cruises completed the survey of the northern area of the U.S. EEZ Hawaiian area. The cruises were completed between April 24 to May 19, 1991 (F-5-91-CP) and May 21 to June 15, 1991 (F-6-91-CP). The final cruise (F-10-91-HW) was completed from September 27 to October 29, 1991.

    Map showing field activities for GLORIA sidescan-sonar data collection in the U.S. EEZ Hawaii III Northwestern Hawaiian Ridge area.
    Figure 41. Map showing field activities for GLORIA sidescan-sonar data collection in the U.S. Exclusive Economic Zone (EEZ) Hawaii III Northwestern Hawaiian Ridge area. Click to enlarge figure.
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