3D density and susceptibility distribution of the Wilkes Subglacial Basin and Transantarctic Mountains in East Antarctica.
We present a 3D crustal model of density and susceptibility distribution in the Wilkes Subglacial Basin and the Transantarctic Mountains (TAM) based on joint inversion of airborne gravity and magnetic data. The applied ''variation of information'' technique enforces a coupling between gravity and magnetic sources to give an enhanced inversion result. Our model reveals a large-scale body located in the interior of the Wilkes Subglacial Basin interpreted as a batholithic intrusive structure, as well as a linear dense body at the margin of the Terre Adelie Craton. We provide six netCDF files, which include the input gravity and magnetic data, the inverted gravity and magnetic data, and inverted crustal density and susceptibility distribution. Additionally, a simple jupyter notebook that loads and plots the provided data can be found here: https://doi.org/10.5281/zenodo.8304170
Funding for this research was provided by NERC through a SENSE CDT studentship (NE/T00939X/1)
Simple
- Alternate title
- Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01765
- Date (Publication)
- 2023-09-04
- Identifier
- http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01765
- Maintenance and update frequency
- unknown Unknown
- Keywords
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- NDGO0001
- NERC OAI Harvesting
-
- NERC_DDC
- GCMD Parameter Valids
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- EARTH SCIENCE > Solid Earth > Geodetics/Gravity
- EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Intensity
- BAS Free-text keywords
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- Density and susceptibility distribution
- Gravity and magnetics
- Joint inversion
- Transantarctic Mountains
- Wilks Subglacial Basin
- Use limitation
- This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Distance
- 7.5 km
- Metadata language
- EnglishEnglish
- Topic category
-
- Geoscientific information
- Begin date
- unknown
- End date
- unknown
- Reference system identifier
- OGP / urn:ogc:def:crs:EPSG::4326
- Distribution format
-
- Hierarchy level
- dataset Dataset
Domain consistency
- Measure identification
- INSPIRE / Conformity_001
Conformance result
- Date
- Explanation
- See the referenced specification
- Pass
- No
- Statement
- The RMS error between observed and inverted gravity field is 1.5 mGal and 0.7 nT for the magnetic field. The end members of the residual between observed and inverted values are + 37 and -18 mGal with a standard deviation of 3 mGal for the gravity inversion and for the magnetic inversion +341 and -65 nT with a standard deviation of 13 nT.
- File identifier
- GB_NERC_BAS_PDC_01765 XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- dataset Dataset
- Date stamp
- 2023-09-04
- Metadata standard name
- NERC profile of ISO19115:2003
- Metadata standard version
- 1.0