CALEB KAZUNARI WALCOTT-GEORGE
Publications
Google Scholar
Submitted/In Review/Press
​2. Walcott-George, C.K., Balter-Kennedy, A., Briner, J.P., Schaefer, J.M., Young, N.E. Glacial erosion and history of Inglefield Land, northwest Greenland. The Cryosphere (accepted and in press). [link to preprint]
We used geologic mapping and cosmogenic nuclides to investigate basal thermal state, erosion, and long-term ice sheet stability of the northwestern Greenland Ice Sheet in Inglefield Land.
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​1. Keisling, B.A., Schaefer, J.M., DeConto, R.M., Briner, J.P., Young, N.E., Walcott-George, C., Winckler, G., Balter-Kennedy, A., Anandakrishnan, S. An ice-sheet modelling framework for leveraging sub-ice drilling to assess sea level potential applied to Greenland. The Cryosphere (in review). [link to preprint]
We applied an ensemble of ice sheet model simulations to evaluate the range of possible sea level contributions from the Greenland Ice Sheet when each part of the model grid deglaciates.
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Peer-Reviewed
5. Prince, K.K., Briner, J.P., Walcott, C.K., Chase, B.M., Kozlowski, A.L., Rittenour, T.M., Yang, E.P. New age constraints reveal moraine stabilization thousands of years after deposition during the last deglaciation of western New York, USA. Geochronology. 6, 3. (2024). [link to article]
We cored several kettle basins across moraines in western New York and OSL dated a glaciofluvial outwash terrace to constrain the timing of Laurentide Ice Sheet deglaciation.
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4. Walcott, C.K., Briner, J.P., Tulenko, J.P., Evans., S.M. Equilibrium line altitudes of alpine glaciers in Alaska suggest Last Glacial Maximum summer temperature was 2 – 5 °C lower than the pre-Industrial. Climate of the Past, 20, 1. (2024). [link to article]
We reconstructed Last Glacial Maximum and Little Ice Age equilibrium line altitudes in a GIS and used these to investigate paleoprecipitation patterns and estimate temperature depressions across Alaska.
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3. Briner, J.P., Walcott, C.K., Schaefer, J.M., Young, N.E., MacGregor, J.A., Poinar, K., Keisling, B.A., Anandakrishnan, S., Albert, M.R., Kuhl, T., Boeckmann, G. Where to GreenDrill? Site selection for cosmogenic nuclide exposure dating of the bed of the Greenland Ice Sheet. The Cryosphere, 16, 10. (2022). [link to article]
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We used a variety of criteria including ice thickness, basal thermal state, ice velocity, ice strain rates, and likely subglacial lithology, to identify areas where subglacial material can be accessed in Greenland using currently available drills from the US Ice Drilling Program.
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2. Walcott, C.K., Briner, J.P., Baichtal, J.F., Lesnek, A.J., Licciardi, J.M. Cosmogenic Ages indicate no MIS 2 refugia in the Alexander Archipelago, Alaska. Geochronology, 4, 1. (2022). [link to article]
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We dated the retreat of the Cordilleran Ice Sheet in southeast Alaska using cosmogenic nuclide dating to determine whether areas currently above sea level were ice-free during the Last Glacial Maximum and available to support human habitation along a proposed migration route from Beringia into the rest of the Americas.
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1. Munroe, J.S., Walcott, C.K., Amidon, W.H., Landis, J.D. A Top-to-Bottom Luminescence-Based Chronology for the Post-LGM Regression of a Great Basin Pluvial Lake. Quaternary, 3, 11. (2020). [link to article]
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We applied luminescence dating to a series of beach ridges from a pluvial lake in the Clover Valley, Nevada, to assess paleoclimate conditions during the post-glacial period to the early Holocene.
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Other Publications
3. Walcott, C.K., Erwin, E., Hills, B.H., What can deep ice, water, sediments, and bedrock at the ice-bed interface tell us? Past Global Changes Magazine, 30, 114-115 (2022). [link to article]
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We wrote this short article for PAGES magazine detailing advancements in understanding and gleaning information from the basal zones (i.e., lowest ice to bedrock) of ice sheets after participating in the 2022 ICECReW workshop.
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2. Walcott, C.K., GIS reconstructions of former glaciers shed light on past climate. Nature Reviews, Earth & Environment. (2022). [pdf]
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I wrote a short article detailing methods used to reconstruct paleoglaciers and the climate information we can extract from these reconstructions.
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1. Keisling, B., Christianson, K., Chu, W., Hawley, R., Holschuh, N., Mankoff, K., Chellman, N., Medley, B., Walcott, C., Brouillet, J., Balco, G., Briner, J. Science Priorities for a Northeast Greenland Traverse. White paper produced at the IDP / Summit-SCO Greenland Scientific Traverse Planning Workshop. (2021). [pdf]
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We drafted a white paper for the National Science Foundation outlining scientific priorities and impetus for resuming ice sheet traverses in Greenland as a result of a 2021 workshop.
Conference Abstracts
*equity, diversity, and inclusion-focused
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29. Walcott, C.K., Brown, N.D., Prince, K.K., Briner, J.P. Can the ice sheet chronology in western New York be improved with infrared stimulated luminescence dating? (poster). 2024 GSA Northeastern Section meeting.
28. Walcott, C.K., Brown, N.D., Briner, J.P., Balter-Kennedy, A., Schaefer, J.M., Young, N.E. Did Prudhoe Dome, northwest Greenland disappear during the Holocene? (talk). 2024 Arctic Workshop.
27. Prince, K.K., Walcott, C.K., Briner, J.P. Exploring deglaciation in northwest Greenland using relative sea level curves and cosmogenic nuclide dating. (poster). 2024 Arctic Workshop
26. Walcott, C., Briner, J.P., Schaefer, J.M., Young, N.E., Balter-Kennedy, A., Brown, N. Ancient landscapes in Inglefield Land, northwest Greenland were preserved during Last Glacial Maximum ice cover. (poster). 2023 AGU Fall meeting.
25. Briner, J.P., Walcott, C., Moravec, E., Balter-Kennedy, A., Brown, N., Young, N.E., Kuhl, T., Schaefer, J. Holocene ice-sheet history at the Prudhoe Dome margin, NW Greenland: Samples for exposure dating (CRN and OSL) beneath and beyond the ice margin. (poster). 2023 AGU Fall meeting.
24. Balter-Kennedy, A., Schaefer, J.M., Briner, J.P., Young, N.E., Walcott, C., Kuhl, T., Moravec, E., Keisling, B.A., Anandakrishnan, S., Stevens, N., Brown, N. First Results from GreenDrill: Exposure dating in sub-ice material from Prudhoe Dome, northwestern Greenland. (talk). 2023 AGU Fall meeting.
23. Schaefer, J.M., Briner, J.P., Balter-Kennedy, A., Walcott, C., Young, N.E., Keisling, B.A., Anandakrishnan, S., Stevens, N., Kuhl, T., Moravec, E., Slawny, K. The basal zone beneath the Greenland Ice Sheet as new paleo-archive to constrain ice sheet vulnerability in space and time–early lessons from the GreenDrill project. (talk). 2023 AGU Fall meeting.
22. Albert, M.R., Moravec, E., Kuhl, T., Erickson, R.V., Harmon, F., Slawny, K., Johnson, J., Schaefer, J., Balter-Kennedy, A., Briner, J.P., Walcott, C., Young, N.E. Unique IDP Sub-Ice Drilling Yields Success for Science in Greenland. (poster). 2023 AGU Fall meeting.
21. Wilson, L., Briner, J.P., Prince, K., Walcott, C. Timing of Neoglacial advances from radiocarbon dating of ice-killed in-situ vegetation: Case studies from East and Northwest Greenland (poster). 2023 GSA fall meeting.
20. Walcott, C.K., Briner, J.P., Tulenko, J.P., Evans, S.M. Alaskan Alpine Glaciers as Recorders of Last Glacial Maximum Precipitation and Temperature: Insights into Paleoclimate (talk). 2022 AGU fall meeting.
19*. Walcott, C.K., Robertson, E.R., Gill, P., Lerhmann, A. Polar Impact: Working to Illustrate, Support, and Promote Diversity in the Polar Community (talk). 2022 AGU fall meeting (invited).
18*. Robertson, E.R., Walcott, C.K., Gill, P., Lehrmann, A., Dryak, M.C., Vurakaranam, A., Quinter, E. Polar Impact: A Field Work Survival Guide for All (talk). 2022 AGU fall meeting (invited).
17. Prince, K., Briner, J.P., Lindqvist, C., Thomas, E.K., Walcott, C.K., Coelho, F., Krabbenhoft, C. Preliminary results from a 15 kyr-long sediment record from Parrot Lake, Dall Island, southeast Alaska (talk). 2022 AGU fall meeting.
16. Prince, K., Briner, J., Walcott, C., Kozlowski, A. Evidence of extensive permafrost between deglaciation and 15,000 years ago in western New York, USA (talk). 2022 GSA Northeastern Section meeting.
15. Walcott, C.K., Briner, J., Baichtal, J., Lesnek., A, Licciardi, J. Of Humans and Glaciers – A Glacial Chronology from the Coastal Pacific Migration Route (talk). 2021 AGU fall meeting.
14. Briner, J., Schaefer, J., Young, N., Keisling, B., Anandakrishnan, S., Kuhl, T., Boeckmann, G., MacGregor, J., Deconto, R., Morlighem, M., Winckler, G., Walcott, C. Introducing GreenDrill: Retrieving sub-glacial bedrock cores in North Greenland to test ice sheet response to interglacial warmth (and supporting your research?) (talk). 2021 AGU fall meeting.
13. Keisling, B., Briner, J., Young, N., Walcott, C.K., Balter-Kennedy, A., Anandakrishnan, S., Winckler, G., Deconto, R., Schaefer, J. Estimating Greenland’s contribution to past sea-level highstands using ice-sheet models and subglacial cosmogenic records (poster). 2021 AGU fall meeting.
12. Lesnek, A.J., Licciardi, J.M., Briner, J.P., Baichtal, J.F., Walcott, C.K. Volcanism, glaciation, and sea-level change at the Mount Edgecumbe Volcanic Field, Alaska: Implications for human occupation of the Northwest Pacific coast (poster). 2021 AGU fall meeting.
11. Walcott, C.K., Tulenko, J.P., Briner, J.P. Last Glacial Maximum equilibrium line altitudes from mountain glaciers across Alaska (talk). 2021 GSA fall meeting.
10. Prince, K.K., Briner, J.P., Walcott, C.K., Kozlowski, A.L., Feranec, R.S. New radiocarbon restraints on the advance and the retreat of the Laurentide Ice Sheet in western NY, USA (talk). 2021 GSA fall meeting.
9. Walcott, C.K., Briner, J.P., Baichtal, J.F. The hunt for ice-free areas along the coastal Cordilleran Ice Sheet margin during the LGM continues: No dice in the northern Alexander Archipelago (talk). 2021 Arctic Workshop.
8. Lesnek, A.J., Licciardi, J.M., Briner, J.P., Baichtal, J.F., Walcott, C.K. Exposing the history of volcanism and sea-level changes at the Mount Edgecumbe Volcanic Field in Southeast Alaska using cosmogenic nuclides (talk). 2021 Arctic Workshop.
7. Walcott, C.K., Briner, J.P., Baichtal, J.F. Hunting for Ice Age refugia: A 10Be-based deglacial Chronology from the Northern Alexander Archipelago, Alaska (poster). 2021 AGU Fall meeting.
6. Walcott, C.K., Tulenko, J.P., Briner, J.P., Young, N.E. Paleo-glacier equilibrium line altitudes from central Alaska: insights into Last Glacial Maximum and Late Glacial climate (talk). 2020 GSA fall meeting.
5. Munroe, J.S., Walcott, C.K., Amidon, W. A top-to-bottom luminescence-based chronology of the post-LGM regression of a Great Basin pluvial lake (talk). 2019 AGU fall meeting.
4. Walcott, C.K., Munroe, J.S., Amidon, W., Belanger, B., Laabs, B. A Late-Pleistocene – mid-Holocene luminescence-based chronology of pluvial Lake Clover, NV (poster). 2019 European Geophysical Union meeting.
3. Kimble, K., Munroe, J., Walcott, C., Herron, D. Investigation of Cryogenic Cave Carbonates from Winter Wonderland Cave, Uinta Mountains, Utah, USA (poster). 2019 European Geophysical Union meeting.
2. Walcott, C., Costigan, K. Mapping and Identifying Sources of Intermittent Streamflow and Permanence of Two Streams in the Kisatchie National Forest, Louisiana (poster). 2018 University of Louisiana at Lafayette REU Research Symposium.
1. Amidon, W.H., Barr, M., Walcott, C., Kylander-Clark, A.R. Geochronologic evidence for Late Cretaceous and Miocene tectonism in Northern New England (talk). 2017 AGU fall meeting.