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Pacific Coastal & Marine Science Center

GLORIA* and the EEZ SCAN Program

*Geological Long-Range Inclined Asdic

The U.S. EEZ (Exclusive Economic Zone) was declared by Presidential Order in 1983. This area includes the sea floor extending 200 nautical miles away from all U.S. possesions and trust territories. The area included is equal to two-thirds of all U.S. lands prior to the declaration. The U.S. Geological Survey was charged with surveying this new domain.

Update - 2011

All of the GLORIA sidescan sonar data collected by the USGS from 1984 to 1991 are now available in full processed resolution (50 m) for the following areas:

map of GLORIA sidescan sonar data areas
Above, map showing USGS GLORIA data in and adjacent to boundaries of U.S. Exclusive Economic Zones.


Conterminous U.S.


Central Pacific

Report and data downloads

"GLORIA Sidescan-Sonar Imagery for Parts of the U.S. Exclusive Economic Zone and Adjacent Areas," by Valerie F. Paskevich, Florence L. Wong, John J. O'Malley, Andrew J. Stevenson, and Christina E. Gutmacher

Web viewer and map service


Legacy (pre-2011) information

Learn more about GLORIA technology and the EEZ-SCAN Project.
Obtain our CD-ROM with GLORIA data for all areas of the EEZ we have mapped.

The following areas are available on-line in a highly desampled form, unless otherwise indicated:


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maintained by Laura Zink Torresan
last modified 16 Setember 2013 (lzt)