Project Grant 2419987

Award Date 1/1/25
Completion Date 12/31/26
Dollars Obligated $355K
Federal Grant Program
47.078
Assistance Type
Project Grant
Place of Performance
Ithaca, NY 14853, USA
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This $201,779 Project Grant award, funded by the National Science Foundation (NSF) under the Polar Programs (CFDA 47.078) grant program, will support a collaborative research project on the dynamics of ice shelf boundaries in Antarctica. The research will feature on-site glaciological and geophysical field surveys near pressure ridges along the coast of Ross Island, an area critical for logistics access to major Antarctic research stations operated by the U.S. and New Zealand. The project...
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This Project Grant award from the National Science Foundation's Polar Programs (CFDA 47.078) provides $354,576 to Cornell University to characterize the extent and morphology of seawater/brine aquifers across Antarctic ice shelves. The key activities include:

  1. Adapting previous algorithms to map the extent of brine aquifers using approximately 180,000 kilometers of existing airborne ice penetrating radar data.
  2. Estimating the liquid water volume of brine aquifers using radar attenuation and reflectivity models.
  3. Integrating radar data with satellite imagery, surface digital elevation models, and ice thickness datasets to determine where and how seawater infiltrates ice shelf firn.
  4. Estimating the persistence of deep entrained brine layers and their potential impacts on ice rheology.

The project aims to clarify the importance of brine aquifers in the ice shelf system and their potential impacts on ice shelf stability. The research will produce new datasets to inform future ice shelf hydrology and hydrofracture models. The award period is from January 1, 2025 to December 31, 2026.

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