Mapping in Support of Law of the Sea

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Mapping in Support of Law of the Sea

  1. 1. Mapping in Support of Law ofMapping in Support of Law of the Seathe Sea Center for Coastal and Ocean Mapping / NOAA-UNH Joint Hydrographic Center University of New Hampshire, USA A presentation onA presentation on HEALY 07-03HEALY 07-03 to the Alaska Eskimo Whalingto the Alaska Eskimo Whaling CommissionCommission Larry Mayer and Andy Armstrong
  2. 2. UN Law of the Sea TreatyUN Law of the Sea Treaty • A coastal nation may claim sovereignty over theA coastal nation may claim sovereignty over the seabed and subsoil (including environmental protection)seabed and subsoil (including environmental protection) of the continental margin beyond their current 200of the continental margin beyond their current 200 n.m. Exclusive Economic Zone (EEZ) under Article 76n.m. Exclusive Economic Zone (EEZ) under Article 76 of the United Nations Convention on the Law of theof the United Nations Convention on the Law of the Sea (UNCLOSSea (UNCLOS)) • if… the shape of the seafloor meets certain criteriaif… the shape of the seafloor meets certain criteria • thethe 2500 m (~8250 ft) depth line (contour)2500 m (~8250 ft) depth line (contour) • the “foot of the slope” – (~13,000 – 16,000 ft)the “foot of the slope” – (~13,000 – 16,000 ft)
  3. 3. http://www.ccom.unh.edu
  4. 4. U.S. Law of the Sea MappingU.S. Law of the Sea Mapping
  5. 5. Leadline Single Beam Echo Sounder Multibeam Echo Sounder Measuring the shape of the seafloorMeasuring the shape of the seafloor
  6. 6. A new perspectiveA new perspective  new insightsnew insights
  7. 7. Beringian MarginBeringian Margin
  8. 8. Beringian MarginBeringian Margin
  9. 9. Gulf of AlaskaGulf of Alaska
  10. 10. Gulf of AlaskaGulf of Alaska
  11. 11. Chukchi CapChukchi Cap
  12. 12. USCG HEALYUSCG HEALY
  13. 13. HEALY 03-02HEALY 03-02 ~2000 n.m of~2000 n.m of multibeammultibeam echosounderechosounder bathymetrybathymetry 8/10 ice8/10 ice
  14. 14. HEALY 2004HEALY 2004 ~4000 nm~4000 nm ofof multibeammultibeam echosounderechosounder 10/10 ice10/10 ice
  15. 15. Redefinition of the 2500 m contour
  16. 16. Discovery and Mapping of aDiscovery and Mapping of a Major SeamountMajor Seamount Healy SeamountHealy Seamount
  17. 17. HEALY 07-03HEALY 07-03 Depart Barrow:Depart Barrow: 17 Aug. 0717 Aug. 07 Return BarrowReturn Barrow 15 Sept. 0715 Sept. 07 Additional science:Additional science: 1- current studies1- current studies 2- deployment of ice2- deployment of ice monitoring buoysmonitoring buoys 3- knowledge of3- knowledge of seafloor shapeseafloor shape critical for climatecritical for climate modelingmodeling

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