IEDA
Project Information
Response of the Antarctic Ice Sheet to the last great global warming
Start Date:
2017-09-01
End Date:
2022-08-31
Description/Abstract
The Antarctic Ice Sheet is the greatest potential contributor to sea-level change. However, the future response of the ice sheet to warming climate is recognized as one of the greatest uncertainties in sea-level projections. An understanding of past ice fluctuations can afford insight into ice-sheet response to climate change and thus is critical for improving sea-level predictions. In this project, we will reconstruct the behavior of the Antarctic Ice Sheet in the western Ross Sea region during the great global warming that ended the last ice age. Fluctuations in ice volume during this time period will allow us to characterize the factors that cause the ice sheet to advance and retreat and will enable us to distinguish between models that suggest repeated episodes of ice-sheet collapse vs those that indicate ice-sheet growth during warming climate. An understanding of the cause(s) of changes in ice volume during the warming that ended the last ice age has important implications for the future of the Antarctic Ice Sheet.
Personnel
Person Role
Hall, Brenda Investigator and contact
Denton, George Co-Investigator
Funding
Antarctic Earth Sciences Award # 1643248
Antarctic Glaciology Award # 1643248
AMD - DIF Record(s)
Data Management Plan
None in the Database
Datasets
Repository Title (link) Status
USAP-DC Marshall Valley U-Series Data exists
USAP-DC Marshall Valley Radiocarbon Data exists
Publications
  1. Heath, S., Hall, B., Denton, G., Henderson, G., and Hendy, C., 2022. Ice-sheet expansion from the Ross Sea into McMurdo Sound, Antarctica, during the last two glaciations. Quaternary Science Reviews 278, 107379.
  2. Miles, M., Hall, B., and Denton, G., 2021. Past interactions between local glaciers and the grounded Ross Sea ice in the Royal Society Range, Antarctica. US-SCAR Meeting, July 2021.
  3. Miles, M., Hall, B., and Denton, G., 2020. Asynchronous behavior of local glaciers and grounded Ross Sea ice in the Royal Society Range, Antarctica, during the Last Glacial Maximum and deglaciation. West Antarctic Ice Sheet Annual Meeting.
  4. Hall, B., 2020. Behavior of grounded ice in McMurdo Sound during Termination I. West Antarctic Ice Sheet Annual Meeting.
  5. Walther, T., Hall, B., and Denton, G., 2019. Reconstruction of Koettlitz Glacier, southern McMurdo Sound, during the last glacial maximum and termination. Geological Society of America Annual Meeting, Phoenix, AZ.
  6. Miles, M., Hall, B., and Denton, G., 2019. Relationship between land-terminating Walcott and Howchin Glaciers and adjacent marine-grounded Ross Sea ice in the Royal Society Range, Antarctica. Interdisciplinary Antarctic Earth Sciences Meeting, Julian, CA.
  7. Hall, B., Denton, G., Heath, S., Henderson, G., Jackson, M., Koffman, T., Mattas, L., Miles, M., and Walther, T., 2019. Extent and age of Ross Sea drifts during the last two glaciations, McMurdo Sound, Antarctica. Interdisciplinary Antarctic Earth Sciences Meeting, Julian, CA.
  8. Walther, T., Hall, B., and Denton, G., 2019. Reconstruction of Koettlitz Glacier in the McMurdo Sound Region, Antarctica during the last glacial maximum and termination. NE Geological Society of America, Portland, Maine.
  9. Miles, M., Hall, B., and Denton, G., 2019. Reconstructing the behavior of the land-terminating Walcott Glacier since the Last Glacial Maximum in the Royal Society Range, Antarctica. NE Geological Society of America, Portland, Maine.

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