Total Sediment Thickness of the World's Oceans & 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.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "Institute for Marine and Antarctic Studies, University of Tasmania",
"@type": "vcard:Contact",
"hasEmail": "mailto:jo.whittaker@utas.edu.au"
}
|
| describedByType | application/octet-steam |
| description | 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. |
| distribution |
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"@type": "dcat:Distribution",
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|
| identifier | gov.noaa.ngdc.mgg.geophysics:G01065_v2 |
| issued | 2013-05-20T00:00:00.000+00:00 |
| keyword |
[
"EARTH SCIENCE>OCEANS>Marine Sediments",
"Sediment Thickness",
"H : 1 km - < 10 km or approximately .01 degree - < .09 degree",
"V : 1 meter - < 10 meters",
"Ocean>Atlantic Ocean",
"Ocean>Indian Ocean",
"Ocean>Pacific Ocean",
"Ocean>Southern Ocean",
"Vertical Location>Sea Floor",
"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"
]
|
| landingPage | https://www.ngdc.noaa.gov/mgg/sedthick/ |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2013-05-20T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| references |
[
"http://dx.doi.org/10.1002/ggge.20181"
]
|
| rights | otherRestrictions, otherRestrictions |
| spatial | 360.0,-70.0,0.0,80.0 |
| temporal | 2003-12-31T00:00:00+00:00/2013-05-20T00:00:00+00:00 |
| title | Total Sediment Thickness of the World's Oceans & Marginal Seas, Version 2 |
