East Antarctic Sub-Glacial Heat Flow Data for Ice Sheet Modeling

Research from Geoscience Australia and partners investigates the distribution of 'hot rocks' containing uranium, thorium, and potassium in East Antarctica. A 275 km transect along the Prydz Bay coastline shows heat production values ranging from 0.02 to 66 µW per cubic meter. This data aims to improve ice sheet models by replacing the assumption of uniform heat flow with geologically variable inputs.

Use Cases

• Calibrating ice sheet behavior models based on variable sub-glacial heat flow data.
• Mapping regions of potential ice surging and stream flow based on elevated heat production from granites.
• Incorporating localized geological heat sources into broader Antarctic climate simulations.
• Validating aeromagnetic data interpretations for sub-glacial granite distribution.

Strengths

• Includes specific quantitative measurements of heat production (0.02 to 66 µW/m³) from a 275 km coastal transect.
• Research is peer-reviewed, published in the Journal of the Geological Society, London.
• Data addresses a critical gap in understanding East Antarctic crustal heat flow, challenging the homogenous assumption.

Limitations

• Row count and column-level documentation are unknown, limiting suitability assessment.
• Spatial coverage is focused on the Prydz Bay region; extrapolation to all of East Antarctica may be uncertain.
• Data freshness should be verified as the last platform update is dated 2026-03 25.

Provenance

Source

Geoscience Australia, Australian Antarctic Division, Antarctic Climate and Ecosystems CRC, University of Melbourne, University of Texas.

Collection Method

Geochemical analysis of rock samples and interpretation of aeromagnetic data along a coastal transect.

Time Range

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Freshness

Last updated 2026-03-25 19:11:06.574174; freshness should be verified.

Geography

East Antarctica, specifically a 275 km transect from the Vestfold Hills to the Amery Ice Shelf in Prydz Bay.