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Mapping in Nautilus Basin in Support of Delimiting an Extended Continental Shelf

The HEALY will collect mapping and geologic data necessary to delimit the US and Canadian Extended Continental Shelf i.e., the region beyond the 200-nm boundary of the Exclusive Economic Zone where coastal States (nations) can have sovereign rights over resources on and below the sea floor. In previous cruises, we have demonstrated that the “foot of the slope” a key parameter in delimiting the extended continental shelf, extends well north of Chukchi Cap into Nautilus Basin towards the Alpha/Mendeleev Ridge. The exact location of the foot of the slope in the region of transition between Nautilus Basin and the Alpha/Mendeleev Ridge needs to be determined and will be the focus of the 2012 cruise (see figure below). If time permits we will also collect dredge samples in critical locations to help establish the geologic nature of the seafloor in this region.

Data and Resources

Additional Info

Field Value
ISO Topics elevation, imageryBaseMapsEarthCover, oceans
Primary Contact Larry Mayer (lmayer@ccom.unh.edu)
Primary Organization Alaska Ocean Observing System
Funding Organizations National Oceanic and Atmospheric Administration
Other Organizations Center for Coastal and Ocean Mapping - Joint Hydrographic Center, University of New Hampshire, National Oceanic and Atmospheric Administration
Organization Types Academic, Federal
Geo-keywords Alaska, North Slope
Start Date 2012-08-25
Created February 23, 2016, 01:38 (AKST)
Last Updated July 1, 2021, 20:31 (AKDT)