Articles | Volume 16, issue 9
The Cryosphere, 16, 3619–3633, 2022
The Cryosphere, 16, 3619–3633, 2022
Research article
08 Sep 2022
Research article | 08 Sep 2022

Evaluation of six geothermal heat flux maps for the Antarctic Lambert–Amery glacial system

Haoran Kang et al.

Data sets

MEaSUREs BedMachine Antarctica M. Morlighem

Antarctic dataset in NetCDF format Anne M. Le Brocq, Antony J. Payne, and Andreas Vieli

Antarctic geothermal heat flux distribution and estimated Curie Depths Yasmina M. Martos

Modelled basal melt rate underneath the Antarctic Lambert-Amery glacial system Liyun Zhao, Haoran Kang, Michael Wolovick, and John C. Moore

Temperature, lithosphere-asthenosphere boundary, and heat flux beneath the Antarctic Plate inferred from seismic velocities ( Meijian An, Douglas A. Wiens, Yue Zhao, Mei Feng, Andrew Nyblade, Masaki Kanao, Yuansheng Li, Alessia Maggi, and Jean-Jacques Lévêque

A geothermal heat flux map of Antarctica empirically constrained by seismic structure ( Weisen Shen, Douglas A. Wiens, Andrew J. Lloyd, and Andrew A. Nyblade

MEaSUREs InSAR-based Antarctica ice velocity map Eric Rignot, Jeremie Mouginot, and Bernd Scheuchl

MEaSUREs Antarctic Boundaries for IPY 2007--2009 from Satellite Radar Jeremie Mouginot, Bernd Scheuchl, and Eric Rignot

Geothermal heat flux data set based on low resolution observations collected by the CHAMP satellite between 2000 and 2010, and produced from the MF-6 model following the technique described in Fox Maule et al.~(2005) Michael Purucker

Short summary
Basal thermal conditions are important to ice dynamics and sensitive to geothermal heat flux (GHF). We estimate basal thermal conditions of the Lambert–Amery Glacier system with six GHF maps. Recent GHFs inverted from aerial geomagnetic observations produce a larger warm-based area and match the observed subglacial lakes better than the other GHFs. The modelled basal melt rate is 10 to hundreds of millimetres per year in fast-flowing glaciers feeding the Amery Ice Shelf and smaller inland.