Abstract:
In March 1983, President Ronald Reagan signed a proclamation establishing an Exclusive Economic Zone (EEZ) of the United States extending its territory 200 nautical miles from the coasts of the United States, Puerto Rico, the Northern Mariana Islands, and the U.S. territories and possessions. In 1984, the U.S. Geological Survey (USGS), Office of Marine Geology began a program to map these areas of the EEZ. The U.S. Pacific Coast was the first EEZ region to be mapped and launched GLORIA (Geological LOng-Range Inclined Asdic) mapping program. The area covered by this survey extended from the Mexican to the Canadian borders and from the continental shelf edge, at about the 400-meter bathymetric contour, to 200 nautical miles from the coast. Survey of the U.S. Pacific West Coast EEZ was completed in four consecutive cruises conducted from late April through mid-August 1984. The collected GLORIA data were processed and digitally mosaicked to produce continuous imagery of the seafloor. A total of 36 digital mosaics of an approximate 2 degree by 2 degree (or smaller) area with a 50-meter pixel resolution were completed for the region.
Purpose:
This remote sensing image of the seafloor is 28 of 36 mosaics created from GLORIA sidescan-sonar data covering the U.S. Pacific West Coast.
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19840426
Ending_Date: 19840815
Currentness_Reference:
ground condition with the following date ranges: 19840426 to 19840521, 19840523 to 19840613, 19840615 to 19840708, and 19840711 to 19840815
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:8e55f8e8-c996-40d8-b10c-6f9d409651ee
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: Western Coastal and Marine Geology
Theme_Keyword: WCMG
Theme_Keyword: Geological LOng-Range Inclined Asdic
Theme_Keyword: GLORIA
Theme_Keyword: GeoTIFF image
Theme_Keyword: grey scale image
Theme_Keyword: backscatter
Theme_Keyword: acoustic reflectivity
Theme_Keyword: marine geology
Theme_Keyword: sidescan-sonar mosaic
Theme_Keyword: Exclusive Economic Zone
Theme_Keyword: EEZ
Theme_Keyword: Infobank identifier F-1-84-SC
Theme_Keyword: Infobank identifier F-2-84-NC
Theme_Keyword: Infobank identifier F-3-84-NC
Theme_Keyword: Infobank identifier F-4-84-WO
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: Abyssal/Submarine Fan
Theme_Keyword: Borderland
Theme_Keyword: Continental/Island Rise
Theme_Keyword: Continental/Island Slope
Theme_Keyword: Marine Basin Floor
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: U.S. Pacific West Coast
Place_Keyword: California
Place_Keyword: Oregon
Place_Keyword: Washington
Place_Keyword: Monterey Fan
Place_Keyword: Monterey Canyon
Place_Keyword: Arguello Fan
Place_Keyword: Arguello Canyon
Place_Keyword: Santa Monica Trough
Place_Keyword: San Pedro Trough
Place_Keyword: San Diego Trough
Place_Keyword: San Lucia Escarpment
Place_Keyword: Point Conception
Place_Keyword: Point Arena
Place_Keyword: Coos Bay
Place_Keyword: Gorda Ridge
Place_Keyword: Mendocino Fracture Zone
Place_Keyword: Mendocino Channel
Place_Keyword: Mendocino Canyon
Place_Keyword: Nitinat Fan
Place_Keyword: Juan de Fuca Ridge
Place_Keyword: Juan de Fuca Plate
Place_Keyword: Blanco Fracture Zone
Place_Keyword: Cascadia Channel
Place_Keyword: Murray Fracture Zone
Place_Keyword: Pacific Plate
Place_Keyword: Gorda Plate
Place_Keyword: Delgado Fan
Place_Keyword: Farallon Fan
Place_Keyword: Gorda Escarpment
Place_Keyword: Gorda Basin
Place_Keyword: Baja Seamount Province
Place_Keyword: Delgada Fan
Place_Keyword: Taney Seamounts
Place_Keyword: Escanaba Trough
Place:
Place_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Place Keywords
Place_Keyword: Ocean > Pacific Ocean
Place_Keyword: Ocean > Pacific Ocean > North Pacific Ocean
Place:
Place_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS)
Place_Keyword: Oregon, Washington, Vancouver Coast and Shelf Ecoregion
Place_Keyword: Northern California Ecoregion
Place_Keyword: Southern California Bight 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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