EM302 Water Column Sonar Data Collected During EX0903
The exhaustive study of the U.S. data holdings pertinent to the formulation of U.S. potential claims of an extended continental shelf under the United Nations Convention of the Law of the Sea (UNCLOS) (Mayer, et al., 2002) did not identify this area as one of the regions where new bathymetric surveys are needed. However, the ECS Task Force considered the Mendocino Ridge might be a potential extension for the U.S. The Mayer et al. (2002) report recommended that multibeam echosounder (MBES) data are needed to rigorously define (1) the foot of the slope (FoS), a parameter of the two UNCLOS-stipulated formula lines, and (2) the 2500-m isobath, a parameter of one of the UNCLOS-stipulated cutoff lines. Both of these parameters, the first a precise geodetic isobath and second a geomorphic zone, are used to define an extended continental shelf claim. The Center for Coastal and Ocean Mapping/Joint Hydrographic Center (CCOM/JHC) of the University of New Hampshire was directed by the U.S. Congress, through funding to the U.S. National Oceanic and Atmospheric Administration (NOAA) to conduct the new surveys and archive the resultant data.
Dataset Citation
- Cite as: NOAA Ocean Exploration. 2009. 'EM302 Water Column Sonar Data Collected During EX0903'. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V53B5X4B [access date]
Dataset Identifiers
- EX0903_EM302
- doi:10.7289/V53B5X4B
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:EX0903_EM302
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:EX0903_EM302
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Ordering Instructions | Contact the NCEI Water Column Sonar Data Manager to order data. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov |
Time Period | 2009-05-06T00:16:00 to 2009-05-17T05:36:15 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West: -128.0018884
East: -122.6988208
South: 37.78584795
North: 40.5356142
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | This cruise had two separate objectives; the primary objective was to test the new EM302 multibeam system aboard the NOAA Ship Okeanos Explorer. If the tests prove successful, the secondary objective was to map the eastern Mendocino Ridge (Fig. 1) for the U.S. Law of the Sea bathymetry program. |
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International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
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Last Modified: 2023-08-16
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov