REGAN, Sean, Geophysical Institute, University of Alaska Fairbanks, 900 Yukon Dr, Fairbanks, AK 99775-9702, BENOWITZ, Jeffrey, Unaffilated, PO Box 753851, Fairbanks, AK 99775, WALDIEN, Trevor, Earth and Planetary Sciences, University California- Davis, 2119 Earth and Physical Sciences, One Shields Avenue, Davis, AK 95616, MARBLE, Sean, Dept of Geosciences, University of Alaska Fairbanks, 900 Yukon Dr, Fairbanks, AK 99775-9702, HOLLAND, Mark E., Department of Life, Earth, and Environmental Sciences, West Texas A&M University, 2403 Russell Long Blvd., Canyon, AK 79015 and ROESKE, Sarah M., Earth and Planetary Sciences, University California- Davis, One Shields Avenue, Davis, CA 95616