BGI > Data / Products > Grids and models > Regional gravity models > Antarctica crustal thickness model Llubes et al. 2018

Antarctica crustal thickness model Llubes et al. 2018

We present a global map of Antarctic crustal thickness computed from space gravity observations as presented in Llubes et al. (2018).  The crustal thickness model is provided in a grid Llubes 2018 Antarctica Crustal thickness.

Llubes 2018 Antarctica Crustal thickness

Crustal thickness of Antarctica (Llubes et al., 2018). Units km.

Llubes 18 Terrain gravity effects 77 km

Antarctica ice sheet and bedrock gravity effects (Llubes et al., 2018). Units mGal.

Antarctica Llubes 2018 Bouguer anomalies

Bouguer anomalies over Antarctica from GOCE Free Air Anomalies (Llubes et al. 2018). Units mGal.

Please, read the following document concerning grids format readme.

 

Other grids provided are:

Terrain gravity effects of ice, sea and surface rock derived from BEDMAP products (Fretwell et al. 2013).

Grids are available at resolutions of 5km Llubes 2018 Antarctica Terrain gravity effect and GOCE resolution 77km Llubes 18 Antarctica Terrain gravity effects 77 km

 

Bouguer anomalies estimated using free air anomalies of DIR5 gravity model (Bruinsma et al. 2014) Llubes 18 Antarctica Bouguer Anomalies.

Contact: lucia.seoaneSPAMFILTER@get.omp.eu and muriel.llubes@get.omp.eu

References:

Bruinsma, S. L., Förste, C., Abrikosov, O., Lemoine, J.-M., Marty, J.-C., Mulet, S., Rio, M.-H. and Bonvalot, S.: ESA’s satellite-only gravity field model via the direct approach based on all GOCE data, Geophys. Res. Lett., 41(21), 7508–7514, doi:10.1002/2014GL062045, 2014.

Llubes, M., Seoane L., Bruinsma S. Remy F. (2018) . Crustal  Thickness of Antarctica  estimated using data from gravimetric satellites. Solid Earth, 9, 457-467, DOI: doi.org/10.5194/se-9-457-2018

Fretwell, P., et al. (2013). Bedmap2: improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7(1), 375–393, doi:10.5194/tc-7-375-2013.

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