Glacial history (paleoglaciology)

Soft sediment 'flame' structures in glacial outwash sediments, Calvert Island, BC, Canada
Collecting radiocarbon samples from buried tree stumps, Sherman Glacier, Alaska

Glaciers are sensitive to changes in climate, but even adjacent glaciers can respond differently to climatic forcing. Together with several international colleagues, I am working at several sites in British Columbia, Yukon, and Alaska to unravel the glacial histories of the areas based on radiocarbon dating of tree stumps, stratigraphic mapping, optically stimulated luminescence dating, and GIS-based hydrological modeling.

 

Eamer, J.B.R., Shugar, D.H., Walker, I.J., Neudorf, C., Lian, O. Eamer, J., Bryce, J., Biln, L. In press. Late Quaternary landscape evolution in a region of stable postglacial relative sea-levels, British Columbia central coast. Boreas. DOI: 10.1111/bor.12297

Eamer, J.B.R., Shugar, D.H., Walker, I.J., Lian, O.B., Neudorf, C.M., and Telka, A.M. 2017A glacial re-advance during retreat of the Cordilleran Ice Sheet, British Columbia central coastQuaternary Research, 87: 468-481. DOI: DOI: 10.1017/qua.2017.16

Neudorf, C., Lian, O.B., Walker, I.J., Shugar, D.H., Eamer, J.B., and Griffin, L.C. 2015. Toward a luminescence chronology for coastal dune and beach deposits on Calvert Island, British Columbia central coast, Canada. Quaternary Geochronology, 30: 275-281. DOI: 10.1016/j.quageo.2014.12.004

Shugar, D.H., Clague, J.J., Best, J.L., Schoof, C., Willis, M.J., Copland, L., and Roe, G.H, 2017. River piracy and drainage basin reorganization led by climate-driven glacier retreat. Nature Geoscience, 10: 370-375. DOI: 10.1038/ngeo2932

Shugar, D.H., Rabus, B.T., Clague, J.J., 2010. Elevation changes (1949-1995) of Black Rapids Glacier, Alaska, derived from a multi-baseline InSAR DEM and historical maps. J. Glaciol. 56, 625-634. DOI: 10.3189/002214310793146278