Total Sediment Thickness of the World's Oceans & Marginal Seas, Version 2
Image of total sediment thickness of the world's oceans and marginal seas, Version 2
NGDC's global ocean sediment thickness grid (Divins, 2003) has been updated for the Australian-Antarctic region (60° -155° E, 30° -70° S). New seismic reflection and refraction data have been used to add detail to the conjugate Australian and Antarctic margins and intervening ocean floor where previously regional sediment thickness patterns were poorly known. On the margins, sediment thickness estimates were computed from velocity-depth functions from sonobuoy/refraction velocity solutions ground-truthed against seismic reflection data. For the Southeast Indian Ridge abyssal plain, sediment thickness contours from Géli et al. (2007) were used. The new regional sediment thickness grid was combined with NGDC's original ocean sediment thickness grid (Divins, 2003) to create an updated global grid of ocean sediment thickness. Even using the minimum estimates, sediment accumulations on the extended Australian and Antarctic continental margins are 2 km thicker across large regions and up to 9 km thicker in the Ceduna Basin compared to NGDC's original sediment thickness grid (Divins, 2003), which has been deprecated but is still available.
Cite this dataset when used as a source.
gov.noaa.ngdc.mgg.geophysics:G01065_v2
Download Data |
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Distribution Formats |
- netCDF (Version: 2)
- File Specification: binary grid created using GMT (Generic Mapping Tools)
- File Compression: gzip
- ASCII xyz (Version: 2)
- File Specification: ASCII text version, XYZ file contains the position of the center of each cell
- File Compression: zip
- geotiff (Version: 2)
- File Specification: geotiff
- File Compression: zip
- ArcGIS (Version: 2)
- File Specification: ArcGIS
- File Compression: zip
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Distributor |
User Services DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce 303-497-6826 ngdc.info@noaa.gov
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Dataset Point of Contact |
Joanne Whittaker Marine Geoscientist Institute for Marine and Antarctic Studies, University of Tasmania +61 (0) 3 6226 6367 jo.whittaker@utas.edu.au
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Time Period |
2003-12-31 to 2013-05-20 |
Spatial Bounding Box Coordinates |
West: 0
East: 360
South: -70.0000
North: 80.0000
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Spatial Coverage Map |
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Associated Resources |
- Global Sediment Thickness Dataset updated for the Australian-Antarctic Southern Ocean
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Publication Dates |
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Edition |
Version 2 |
Data Presentation Form |
Digital model - multi-dimensional digital representation of a feature, process, etc.
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Dataset Progress Status |
Complete - production of the data has been completed |
Data Update Frequency |
As needed |
Purpose |
To update NGDC's global sediment-thickness database for use by researchers and interested public. |
Originators |
- Joanne Whittaker
Institute for Marine and Antarctic Studies, University of Tasmania
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Distributors |
- User Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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Publishers |
- NOAA National Centers for Environmental Information
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Theme keywords |
Global Change Master Directory (GCMD) Science Keywords- EARTH SCIENCE>OCEANS>Marine Sediments
Uncontrolled Keywords
NASA/GCMD Data Resolution Keywords
- H : 1 km - < 10 km or approximately .01 degree - < .09 degree
- V : 1 meter - < 10 meters
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Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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Place keywords |
Global Change Master Directory (GCMD) Location Keywords
- Ocean>Atlantic Ocean
- Ocean>Indian Ocean
- Ocean>Pacific Ocean
- Ocean>Southern Ocean
- Vertical Location>Sea Floor
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Use Constraints |
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Access Constraints |
- Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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Fees |
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Lineage information for: dataset |
Processing Steps |
- 2013-01-01T00:00:00 - We compute new, regional 5-minute resolution sediment thickness grids using seismic reflection and refraction derived sediment thicknesses for the southern Australian and conjugate Antarctic Wilkes Land margins, merged with sediment thickness data from Géli et al. (2007) for the intervening abyssal plains. Values from the NGDC global sediment thickness grid (Divins, 2004) were used for areas not covered by the other data sets.
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Source Datasets |
- Thermal regime of the Southeast Indian Ridge between 88ºE and 140ºE: Remarks on the subsidence of the ridge flanks
- Description of Source: Thermal regime of the Southeast Indian Ridge between 88ºE and 140ºE: Remarks on the subsidence of the ridge flanks
- Geological framework of the continental margin in the region of the Australian Antarctic Territory
- Description of Source: Geological framework of the continental margin in the region of the Australian Antarctic Territory
- A revised structural framework for frontier basins on the southern and southwestern Australian continental margin
- Description of Source: A revised structural framework for frontier basins on the southern and southwestern Australian continental margin
- Nature of the continent-ocean transition on the non-volcanic rifted margin in the central Great Australian Bight
- Description of Source: Nature of the continent-ocean transition on the non-volcanic rifted margin in the central Great Australian Bight
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Lineage information for: repository |
Processing Steps |
- 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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Last Modified: 2017-09-25
For questions about the information on this page, please email:
jo.whittaker@utas.edu.au