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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

sea-floor acoustic reflectivity, sea-floor characteristics, image mosaics, marine geophysics, sidescan sonar

ISO 19115 Topic Category

imageryBaseMapsEarthCover, oceans, geoscientificInformation

Other Subject Keywords

GLORIA, GLORIA > Geological Long-Range Inclined ASDIC, EEZ, Marine Basin Floor, GeoTIFF image, USGS, Exclusive Economic Zone (EEZ), ACOUSTIC RECEIVERS, marine geophysics, Marine Oceanic, SIDE-SCAN SONAR, WHSC, Exclusive Economic Zone, Geological LOng-Range Inclined Asdic, acoustic reflectivity, field activity number F-2-91-CP, Oceans > Ocean Acoustics > Acoustic Reflectivity, backscatter, sidescan-sonar mosaic, field activity number F-1-91-CP, distributions, sidescan sonar, seabed, Woods Hole Science Center, field activity number F-13-90-CP, CMGP, physical habitats and geomorphology, Coastal and Marine Geology Program, grey scale image, U.S. Geological Survey, marine geology

Place Keywords

Johnston Island, Hikina Island, Central Pacific Ocean, Oceans > Pacific Ocean > Central Pacific Ocean, Johnston Atoll EEZ, Johnston Atoll Exclusive Economic Zone, Sand Island, Hawaii Ecoregion, Akau Island

JI_Q02.TIF - Johnston Island U.S. EEZ GLORIA sidescan-sonar data mosaic (2 of 16) (LCC, 50 m, WGS84)

In 1984, the U.S. Geological Survey (USGS), Office of Marine Geology, launched a program using the Geological LOng-Range Inclined Asdic (GLORIA) sidescan-sonar system to study the entire U.S. Exclusive Economic Zone (EEZ). From December 1990 through February 1991, the USGS and IOS (Institute of Oceanographic Sciences, U.K.) scientists conducted three surveys within the Johnston Atoll U.S. EEZ surrounding Johnston Island. The results of these surveys were 16 digital mosaics of a 2 degree by 2 degree area with a 50-meter pixel resolution.

Get Data and Metadata
Author(s) U.S. Geological Survey
Publication Date 2011
Beginning Date of Data 1990-12-06
Ending Date of Data 1991-02-21
Data Contact
U.S. Geological Survey
DOI This item doesn't have a registered DOI.
Citation Check repository for data citation.
Metadata Contact
Valerie Paskevich
Metadata Date 2021-11-16
Related Publication
Citations of these data No citations of these data are known at this time.
Access public
License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: Coastal and Marine Geoscience Data System
Harvest Date: 2025-01-22T04:21:20.072Z