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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
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  NERC EDS UK Polar Data Centre - Lowe, M., Jordan, T., Moorkamp, M., Ebbing, J., Green, C., Losing, M., & Larter, R.
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Solid Earth > Geodetics/Gravity
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Intensity
BAS Free-text keywords
  • 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
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Begin date
unknown
End date
unknown
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
Protocol
http
Name
GET DATA
Function
download Download
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
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/01765
 
 

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