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.
- 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]
- EX0903_EM302
- doi:10.7289/V53B5X4B
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:EX0903_EM302
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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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23)
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Last Modified: 2023-08-16
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