International Bathymetric Chart of the Arctic Ocean (IBCAO)...International Bathymetric Chart of the...
Transcript of International Bathymetric Chart of the Arctic Ocean (IBCAO)...International Bathymetric Chart of the...
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International Bathymetric Chart of the Arctic Ocean (IBCAO)
Martin JakobssonDepartment of Geological Sciences, Stockholm Universityp g , y
1500 1800 1900 2000
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Arctic Ocean sea ice
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Ice and Snow characteristics from aircraft landing observations by former Soviet Union 1928 1989Union, 1928-1989
High-latitude expedition Sever base on ZhokhovIsland (photo taken by Sergey Kessel)(p y g y )
Data source:National Snow and Ice Data Center. 2004. Morphometric characteristics of ice and snow in the Arctic Basin: aircraft
1928-19561956-1989
landing observations from the Former Soviet Union, 1928-1989. Compiled by I.P. Romanov. Boulder, CO
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Defense research board of Canada 1956
Lomonosov RidgeMendeleev Ridge
Gakkel RidgeMendeleev Ridge
Chukchi Morris Jesup Rise
Alpha RidgeBorderland
Alpha Ridge
Soviet Union map, 1954, Burhanov
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USS Nautilus, first nuclear driven submarine to h N h P l A 3 19 8cross over the North Pole on August 3, 1958
Commanding officer was CDR William R. AndersonSource: Wikipedia
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Fletcher’s Ice Island T-3 (1952-1974)
Large tabular iceberg discovered by U.S. Air Force Colonel Joseph O. Fletcher
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GEBCO Sheet 5.17 source data
Fletcher’s Ice Island T3
Submarine track
Swedish railroads(Source: Trafikverket)
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GEBCO Sheet 5.17 (Canadian Hydrographic Survey et al., 1979)
Ch k hi B d l d
Lomonosov RidgeMendeleev Ridge
Chukchi Borderland
Lomonosov Ridge
Alpha Ridge
Mendeleev Ridge
Gakkel Ridge
Morris Jesup Rise
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International Bathymetric Chart ofInternational Bathymetric Chart of the Arctic Ocean (IBCAO)• Initiated 1997 in St Petersburg, Russia• Originally endorsed by the Intergovernmental Oceanographic Commission
(IOC), the International Arctic Science Committee (IASC), the International H d hi O i ti (IHO)Hydrographic Organization (IHO)
Chairman: Ron Macnab
First compilation published 2000First compilation published 2000with an article in EOS:Jakobsson, M., Cherkis, N., Woodward, J., Macnab, R., Coakley, B., 2000. New grid of Arctic b th t id i ti t d k EOSbathymetry aids scientists and mapmakers. EOS, Transactions American Geophysical Union 81, 89, 93, 96.
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Map presented in EOS:Jakobsson, M., Cherkis, N., Woodward, J., Macnab, R., Coakley, B., 2000. New grid of Arctic bathymetry aids scientists andArctic bathymetry aids scientists and mapmakers. EOS, Transactions American Geophysical Union 81, 89, 93, 96.
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Block median filteringRaw data Processed data
Data processing (sound velocity
correction, outlier removal etc.)
GISError correction
(data flagging)
Data mining (cross track analyzes, contour
splicing etc )
GISDatabase
(data flagging)
splicing etc.)Visualization and
inspection
Gridding (Continuous curvature splines in tension algorithm, GMT algorithm: g gSmith & Wessel, 1990)
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IBCAO Version 2.0: Source Data
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1907
2008Jakobsson et al., 2008, GRL
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Comparing GEBCO and IBCAO over the Lomonosov Ridge
Jakobsson and Macnab, Marine Geophysical Researches, 2006
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Comparing GEBCO and IBCAO over the Lomonosov Ridge
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Status 2011: < 7 % of the central Arctic Ocean is mapped with multibeam
Mars was mapped already in 1998 and 1999 by NASA’s Mars Orbiter Laser Altimeter (MOLA)NASA s Mars Orbiter Laser Altimeter (MOLA).
From Mars Express High-Resolution Stereo Camera (HRSC) images, DTMs of 50x50 m resolution are produced and ortho-images with 12.5 m resolution (Gwinner, et al,., EPSL, 2010)