Coupled Ice Sheet Structure and Bedrock Geology in the Deep Interior of East Antarctica: Results From Dome A and the South Pole Basin

Abstract The deep interior of the East Antarctic Ice sheet likely contains important records of climate and ice sheet evolution. Here we report on a recent aerogeophysical survey of the southern flank of Dome A, over South Pole Basin. We find an extensive radioglaciologically defined basal unit under Dome A that abruptly truncates within South Pole Basin. This truncation aligns with a change of subglacial bed properties and distinct subglacial landforms. We infer that this basal unit may be slowly transporting and depositing material through local basal melting in South Pole Basin into an extensive, subglacially forming, sedimentary basin. In turn, this sedimentary basin may induce locally enhanced melting by hosting local groundwater.

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Publication Details

Journal
Geophysical Research Letters
Published
2025-10-03
DOI
https://doi.org/10.1029/2025gl115729
Citations
2
Primary Topic
Cryospheric studies and observations
Type
article
Field-Weighted Citation Impact
2.60
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article

Coupled Ice Sheet Structure and Bedrock Geology in the Deep Interior of East Antarctica: Results From Dome A and the South Pole Basin

Megan Kerr, Shravan Kaundinya, D. A. Young, Jamin S. Greenbaum et al.
2 citations
Geophysical Research Letters
Cryospheric studies and observations
2.60
article

Coupled Ice Sheet Structure and Bedrock Geology in the Deep Interior of East Antarctica: Results From Dome A and the South Pole Basin

Megan Kerr, Shravan Kaundinya, D. A. Young, Jamin S. Greenbaum, Scott D. Kempf, Shivangini Singh, Gregory Ng, John Paden, Donald D. Blankenship, D. Buhl, Shuai Yan, Kristian Chan, Alejandra Vega González
article en
2 citations

Abstract

Abstract The deep interior of the East Antarctic Ice sheet likely contains important records of climate and ice sheet evolution. Here we report on a recent aerogeophysical survey of the southern flank of Dome A, over South Pole Basin. We find an extensive radioglaciologically defined basal unit under Dome A that abruptly truncates within South Pole Basin. This truncation aligns with a change of subglacial bed properties and distinct subglacial landforms. We infer that this basal unit may be slowly transporting and depositing material through local basal melting in South Pole Basin into an extensive, subglacially forming, sedimentary basin. In turn, this sedimentary basin may induce locally enhanced melting by hosting local groundwater.

Geophysical Research LettersVol. 52(19)
Scripps Institution of Oceanography (US), University of Washington (US), Johns Hopkins University Applied Physics Laboratory (US), Center for Remote Sensing and Integrated Systems (US), Earth and Space Research (US), University of Virginia (US), University of Puerto Rico-Mayaguez (PR), The University of Texas at Austin (US)
Openalex Percentile: Top 10%
Cryospheric studies and observations
2.60
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