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Compilation of a new bathymetric dataset of South Georgia

Published online by Cambridge University Press:  02 December 2008

P.T. Fretwell*
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
A.J. Tate
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
T.J. Deen
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK
M. Belchier
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK

Abstract

We introduce a new bathymetric compilation of the area around South Georgia in the Southern Ocean. Using a variety of data sources including multi and single-beam swath bathymetry we have constructed a gridded bathymetric dataset of the shelf and near-shelf sea-floor areas. The grid has been constructed using a layered hierarchy dependent upon accuracy of each dataset. The spikes and errors have been checked both manually and with a novel semi-automated process. We discuss the resulting bathymetry and the potential uses of the new dataset.

Type
Physical Science
Copyright
Copyright © Antarctic Science Ltd 2009

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References

Belchier, M. & Fretwell, P. 2008. Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3). CCAMLR-WG-SAM-08/10. Hobart: CCAMLR.Google Scholar
Burrough, P.A. 1986. Principles of Geographical Information Systems for land resources assessment. New York: Oxford University Press, 50 pp.Google Scholar
Everson, I. & Campbell, S. 1991. Area of seabed within selected depth ranges in CCAMLR subarea 48.3, South Georgia. SC-CCAMLR-SSP/7, 1990, WG-FAS-90-8, 459466.Google Scholar
IOC, IHO & BODC. 2003. Centenary Edition of the GEBCO Digital Atlas. Published on CD-ROM on behalf of the Intergovernmental Oceanographic Commission and the International Hydrographic Organization as part of the General Bathymetric Chart of the Oceans, Liverpool: British Oceanographic Data Centre.Google Scholar
Graham, A.G.D., Fretwell, P.T., Larter, R.D., Hodgson, D.A., Wilson, C.K., Tate, A.J. & Morris, P. 2008. New bathymetric compilation highlights extensive paleo-ice sheet drainage on continental shelf, South Georgia, sub-Antarctica. Geochemistry, Geophysics, Geosystems, 9, 121.CrossRefGoogle Scholar
Hutchinson, M.F. 1988. Calculation of hydrologically sound digital elevation models. Third International Symposium on Spatial Data Handling, Sydney. Columbus, OH: International Geographical Union, 117133.Google Scholar
Nitsche, F.O., Jacobs, S.S., Larter, R.D. & Gohl, K. 2007. Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology. Geochemistry, Geophysics, Geosystems, 8, 10.1029/2007GC001694.CrossRefGoogle Scholar
Wells, D. & Monahan, D. 2002. IHO S44 Standards for Hydrographic Surveys and the variety of requirements for bathymetric data. The Hydrographic Journal, 104, 916.Google Scholar