ArticleScience advances2015
High geothermal heat flux measured below the West Antarctic Ice Sheet.
Article in Science advances, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Glacial Water: A Dynamic Microbial Medium.Microorganisms · 2023Review
- Liquid water on cold exo-Earths via basal melting of ice sheets.Nature communications · 2022Article
- Direct isotopic evidence of biogenic methane production and efflux from beneath a temperate glacier.Scientific reports · 2018Article
- Late Cenozoic unification of East and West Antarctica.Nature communications · 2018Article
- Evidence of an active volcanic heat source beneath the Pine Island Glacier.Nature communications · 2018Article
- The Coevolution of Life and Environment on Mars: An Ecosystem Perspective on the Robotic Exploration of Biosignatures.Astrobiology · 2018Article
- A synthesis of the basal thermal state of the Greenland Ice Sheet.Journal of geophysical research. Earth surface · 2016Article
- Physiological Ecology of Microorganisms in Subglacial Lake Whillans.Frontiers in microbiology · 2016Article
- Microbial ecology of Antarctic aquatic systems.Nature reviews. Microbiology · 2015Review
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The geothermal heat flux is a critical thermal boundary condition that influences the melting, flow, and mass balance of ice sheets, but measurements of this parameter are difficult to make in ice-covered regions. We report the first direct measurement of geothermal heat flux into the base of the West Antarctic Ice Sheet (WAIS), below Subglacial Lake Whillans, determined from the thermal gradient and the thermal conductivity of sediment under the lake. The heat flux at this site is 285 ± 80 mW/m(2), significantly higher than the continental and regional averages estimated for this site using regional geophysical and glaciological models. Independent temperature measurements in the ice indicate an upward heat flux through the WAIS of 105 ± 13 mW/m(2). The difference between these heat flux values could contribute to basal melting and/or be advected from Subglacial Lake Whillans by flowing water. The high geothermal heat flux may help to explain why ice streams and subglacial lakes are so abundant and dynamic in this region.
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