Principal Investigators:


Darrell Kaufman
Northern Arizona University

Darrell is a Professor in the School of Earth Sciences and Environmental Sustainability at NAU and is the PI of the project. He has been studying the Quaternary geology of Alaska for more than 30 years, and has been coring lakes there for more than two decades. He has a special interest in geochronology and in facilitating large collaborative science synthesis projects.

For more information, visit Darrell's website:

Graduate students:


Ellie Broadman
Northern Arizona University

Ellie is a PhD student in School of Earth Sciences and Environmental Sustainability at NAU. Her doctoral research involves analyzing changes in oxygen isotopes in diatoms found in lake sediments to reconstruct Holocene changes in hydrological conditions in both the Kenai lowlands and the northeastern Brooks Range. Prior to beginning her graduate work at NAU, Ellie worked at the US Geological Survey in Menlo Park, CA after receiving her B.A. in Geography from UC Berkeley.


Ed Berg with released mt hemlock krummholz  Mystery Hills 7-13-2004 a cropped.jpg

Annie Wong
NoRthern Arizona University

Annie is a Masters student at NAU in Environmental Science and Policy. Her Master’s research involves analyzing flood layers in Pothole Lake and terraces in the Skilak River in order to reconstruct a flood history for the Skilak catchment. Prior to her graduate work at NAU, Annie received her B.A. in Biology and Geology from Mount Holyoke College. 


David Fortin
Northern Arizona University

After obtaining his PhD in Physical Geography at Queen’s University (Kingston, Ontario), David worked at the Institut National de la Recherche Scientifique in Québec City and, since 2013, at the School of Earth Science and Environmental Sustainability of Northern Arizona University, as postdoc and more recently as a Research Associate. David is currently involved in projects in northeastern Canada and Alaska that are related to lake sediments and physical limnology.


Britta Jensen
University of Alberta

Britta is an Assistant Professor in the Department of Earth and Atmospheric Sciences at the University of Alberta in Edmonton. Her research focus has been in Quaternary geology, with a particular interest in the loess deposits and tephrochronology of Alaska and the Yukon. More recent research directions include using lake and marine records to improve late Pleistocene and Holocene eruption records in Alaska to aid distal tephra correlations and test ideas about potential links between climatic events and eruption frequency.  


Ed Berg
US Fish and Wildlife Service

Ed Berg, PhD, is a retired USFWS Ecologist whose research has focused on large-scale disturbance agents, such as fire and spruce bark beetles, and on the ecological effects of climate change on the Kenai Peninsula. He teaches geology at the Kenai Peninsula College in Homer, where he lives with his wife Sara and is presently writing a book on the landscape history of the western Kenai Peninsula.


Nicholas McKay
Northern Arizona University

Nick uses process models to improve paleoclimate reconstructions and uncertainty quantification. He has studied sedimentation processes and paleoclimate records from several Alaskan lakes. He will assist with establishing the geochronology for lake sediment cores for the South Alaska Lakes project.