Alice Doughty

 

Visiting Assistant Professor of Geology

Contact
(207) 786-6113  adoughty@bates.edu
Carnegie Science Hall, Room 202

Bio | Teaching | Research | Recent Publications

 

Bio

Alice explores Earth surface processes with her students, especially the interactions between climate, glaciers, and geomorphology. As an undergraduate, she found the Earth sciences particularly appealing, in part because of the huge spatial and temporal scales but mostly because of all the unanswered questions. Through her M.Sc. in dating moraines and her Ph.D. in palaeoclimate reconstructions via numerical modelling of glaciers, she continues to pursue answers to one of the last big questions in the Earth sciences: What causes ice ages? Her research integrates multiple natural systems (e.g. climate cycles, glacier response, the biosphere, and tectonic processes) for a more complete understanding of past climatic events. She is grateful for opportunities to share her enthusiasm of Earth and climate sciences with others.

 

Teaching

Alice teaches introductory geology courses as well as upper level courses relating to surficial processes.  Through these courses, students make observations, solve calculations, take measurements, and report their findings while doing hands-on experiments and field trips.  Alice combines her favorite Earth science methods of GIS mapping, laboratory sedimentary analysis, and field reconnaissance to inspire students to be curious about Maine’s sea level history (GEOs20: Lost Beaches of Maine).

Fall GEO 104: “Plate Tectonics and Tectonic Hazards”

GEO 210: “Sedimentology”

Winter GEO 103: “Surface Processes and Environmental Change”

ESGE 217: “GIS and Mapping”

Short Term GEOs20: “Lost Beaches of Maine”

 

Research

ICE AGE GLACIERS IN UGANDA:  Alice received funding from the National Science Foundation in 2017 to continue her research on modeling glacier extents in the Rwenzori Mountains of Uganda.  Her team focused on the timing of when glaciers were at their maximum extents in the past and the amount of cooling required to advance these glaciers.  She reconstructed past glacier extents using a numerical glacier model and found that the magnitude of cooling these glaciers needed to advance to their ice age extents is much greater than the magnitude of cooling at sea level.  This difference indicates that the rate of temperature change with elevation (lapse rate) was steeper during the ice age, which caused amplified cooling at high elevations (2000-5000 meters above sea level).

AVALANCHE-FED GLACIERS IN NEW ZEALAND:  Glaciers are similar to bank accounts, mass in (i.e., snow) equals mass out (meltwater) when the glacier is in equilibrium.  Alice worked on glaciers with relatively high mass in: mass out ratios, and the most extreme example of this was a low-elevation glacier (almost entirely in the melt zone) that survived because it received a substantial flux of snow from avalanches off the surrounding valley walls.  She incorporated a mass transport and deposition parameterization into her glacier model to account for this mass flux and is curious if the high mass in: mass out ratio influences this glacier’s response to climate.

TOPOGRAPHIC CONTROLS ON GLACIER LENGTH CHANGES:  Alice is currently writing a proposal to investigate the role of topography (e.g., slope, aspect, headwall height, plateaus) on glacier length changes and subsequent moraine deposition.

 

Recent Publications

Doughty, A.M., Kelly, M.A., Russell, J.M., Jackson, M.S., Anderson, B.M., Chipman, J., Nakileza, B., Dee, S.G. (in press) The dynamics of Equilibrium Line Altitudes over the past 31,000 years in the Rwenzori Mountains, East Africa. GSA Special Paper on Quaternary Science in honor of Prof. Stephen C. Porter.

Jackson, M.S., Kelly, M.A., Russell, J.M., Doughty, A.M., Howley, J.A., Chipman, J.W., Cavagnaro, D., Nakileza, R., Zimmerman, S.H. (in press) Synchronous low- and high-latitude warming at the onset of the last deglaciation. Science Advances.

Eaves, S.R., Winckler, G., Mackintosh, A.N., Schaefer, J.M., Townsend, D.B., Doughty, A.M., Jones, R.S., Leonard, G.S. (in press) Late-glacial and Holocene glacier fluctuations in North Island, New Zealand. Quaternary Science Reviews.

Malone, A.G.O., Doughty, A.M., MacAyeal, D.R. (2019) Interannual climate variability helps define the mean state of glaciers. Journal of Glaciology 65, 508-517.

Doughty, A.M., Mackintosh, A.N., Anderson, B.M., Dadic, R., Putnam, A.E., Barrell, D.J.A., Denton, G.H., Chinn, T.J.H., Schaefer, J.M. (2017) An exercise in glacier length modeling: Interannual climatic variability alone cannot explain Holocene glacier fluctuations in New Zealand. Earth and Planetary Science Letters 470, 48-53.