Abstract:
During February 1982 and again from August 7 to October 22, 1985 the U.S. Geological Survey (USGS) conducted four cruises to cover the U.S. Gulf of Mexico Continental Margin Exclusive Economic Zone (EEZ) seaward of the continental shelf edge. 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 sea-floor. A total of 16 digital mosaics of a 2 degree by 2 degree (or smaller) area with a 50-meter pixel resolution were completed for the Gulf of Mexico region.
Purpose:
This remote sensing image of the sea-floor is a reduced-resolution (250-meter) composite mosaic of the 16 mosaics created from the Gulf of Mexico GLORIA sidescan-sonar data.
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19820202
Ending_Date: 19851022
Currentness_Reference:
ground condition with the following date ranges: 19820202 to 19820224, 19850807 to 19850903, 19850905 to 19850929, and 19851002 to 19851022
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:1a732b72-b072-43ec-8d52-e1427b9340c4
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Geological LOng-Range Inclined Asdic
Theme_Keyword: GLORIA
Theme_Keyword: GeoTIFF image
Theme_Keyword: grey scale image
Theme_Keyword: sidescan-sonar mosaic
Theme_Keyword: composite mosaic
Theme_Keyword: backscatter
Theme_Keyword: acoustic reflectivity
Theme_Keyword: marine geology
Theme_Keyword: 250-meter
Theme_Keyword: Albers Equal Area
Theme_Keyword: Exclusive Economic Zone
Theme_Keyword: EEZ
Theme_Keyword: WHSC serial number 82005
Theme_Keyword: WHSC serial number 85027
Theme_Keyword: WHSC serial number 85028
Theme_Keyword: WHSC serial number 85034
Theme_Keyword: WHSC cruise identifier 82FARN-7
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 1
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 2
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 3
Theme_Keyword: Infobank identifier F-7-82-GM
Theme_Keyword: Infobank identifier F-1-85-GM
Theme_Keyword: Infobank identifier F-2-85-GM
Theme_Keyword: Infobank identifier F-3A-85-GM
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords, Version 6.0.0.0.0
Theme_Keyword: Oceans > Ocean Acoustics > Acoustic Reflectivity
Theme:
Theme_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Instrument Keywords
Theme_Keyword: ACOUSTIC RECEIVERS
Theme_Keyword: GLORIA > Geological Long-Range Inclined ASDIC
Theme_Keyword: SIDE-SCAN SONAR
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: distributions
Theme_Keyword: physical habitats and geomorphology
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords
Theme_Keyword: seabed
Theme_Keyword: Exclusive Economic Zone (EEZ)
Theme_Keyword: sidescan sonar
Theme_Keyword: marine geophysics
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sidescan sonar
Theme_Keyword: image mosaics
Theme_Keyword: marine geophysics
Theme_Keyword: sea-floor characteristics
Theme_Keyword: sea-floor acoustic reflectivity
Theme:
Theme_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS)
Theme_Keyword: Marine Oceanic
Theme_Keyword: Continental/Island Rise
Theme_Keyword: Continental/Island Slope
Theme_Keyword: Marine Basin Floor
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Gulf of Mexico
Place_Keyword: continental slope
Place_Keyword: continental rise
Place_Keyword: continental margin
Place_Keyword: continental shelf
Place_Keyword: Mississippi Canyon and Fan
Place_Keyword: Sigsbee Escarpment
Place_Keyword: Florida Escarpment
Place:
Place_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Location Keywords, Version 6.0.0.0.0
Place_Keyword: Ocean > Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf Of Mexico
Place:
Place_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS)
Place_Keyword: Northern Gulf of Mexico Ecoregion
Place_Keyword: Floridian Ecoregion
Stratum:
Stratum_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS)
Stratum_Keyword: Substrate
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
The U.S. Geological Survey (USGS) must be referenced as the originator of the dataset in any future products or research derived from these data.
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