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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


Kingman Reef and Palmyra Atoll 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
Johnston Atoll
Kingman-Palmyra
  • Field Activities
  • Index Map & Data Links
  • Pacific Coast
    Puerto Rico
    Data Catalog
    Acknowledgments
    References
    List of Figures
    Contacts
    Kingman Reef and Palmyra Atoll GLORIA sidescan-sonar mosaic.
    Figure 46. Kingman Reef and Palmyra Atoll area GLORIA sidescan-sonar mosaic. Click to enlarge figure.

    Background

    Kingman Reef and Palmyra Atoll are two of the Line Islands located in the Central Pacific and are currently United States territories. The Line Islands are grouped into three categories; The Northern, Central and Southern Line Islands. Kingman Reef and Palmyra Atoll fall within the Northern Line Islands. This GLORIA image shows about 215,000 sq km of seafloor, representing the northern two-thirds of the EEZ around Kingman Reef and Palmyra Atoll in the central Pacific Ocean. Unfortunately, the southwestern third of this EEZ area was not imaged. Kingman Reef and Palmyra Atoll are on the 4,200-km-long northwest-southeast-trending Line Islands Ridge and are located approximately 1,100 miles southwest of Honolulu, Hawaii.

    Kingman Reef, an unincorporated territory, is predominantly a submerged, uninhabitable atoll located approximately halfway between Honolulu, Hawaii, and American Samoa. Palmyra Atoll, an incorporated territory, lies southeast of Kingman Reef.

    The GLORIA data for the U.S. EEZ Kingman Reef and Palmyra Atoll area were acquired on a single cruise (F-3-91-CP) and followed the completion of the U.S. EEZ Johnston Atoll area survey. The cruise departed Hilo, Hawaii, on February 24, 1991 and was completed on March 25, 1991. Data acquired during this survey were later processed and mosaicked to complete 7 digital images of the seafloor. Two mosaics are of a 2-degree by 2-degree area; 2 mosaics are of 2-degree and 15 minute by 2-degree area; 1 mosaic is of 1-degree by 2-degree and 45 minutes area; 1 mosaic is of 1.5-degree by 2-degree area; and 1 mosaic is of 1-degree 45' by 2-degree 45' area.

    Map showing field activities for GLORIA sidescan-sonar data collection in the U.S. EEZ Kingman Reef and Palmyra Atoll area.
    Figure 47. Map showing field activities for GLORIA sidescan-sonar data collection in the U.S. Exclusive Economic Zone (EEZ) Kingman Reef and Palmyra Atoll area. Click to enlarge figure.
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