T
Thomas A. Ager
Researcher at United States Geological Survey
Publications - 45
Citations - 3076
Thomas A. Ager is an academic researcher from United States Geological Survey. The author has contributed to research in topics: Holocene & Glacial period. The author has an hindex of 25, co-authored 45 publications receiving 2875 citations.
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Journal ArticleDOI
Holocene thermal maximum in the western Arctic (0-180°W)
Darrell S. Kaufman,Thomas A. Ager,Nicholas John Anderson,Patricia M. Anderson,John T. Andrews,Patrick J. Bartlein,Linda B. Brubaker,Larry Coats,Les C. Cwynar,M. L. Duvall,Arthur S. Dyke,Mary E. Edwards,Wendy R. Eisner,Konrad Gajewski,Áslaug Geirsdóttir,Feng Sheng Hu,Anne E. Jennings,Michael R. Kaplan,Michael W. Kerwin,Anatoly V. Lozhkin,Glen M. MacDonald,Gifford H. Miller,Cary J. Mock,W. Wyatt Oswald,Bette L. Otto-Bliesner,David F. Porinchu,Kathleen M. Rühland,John P. Smol,Eric J. Steig,Brent B. Wolfe +29 more
TL;DR: In this paper, a spatio-temporal pattern of peak Holocene warmth (Holocene thermal maximum, HTM) is traced over 140 sites across the Western Hemisphere of the Arctic (0−180°W; north of ∼60°N).
Journal ArticleDOI
Airborne electromagnetic imaging of discontinuous permafrost
Burke J. Minsley,Jared D. Abraham,Bruce D. Smith,James C. Cannia,Clifford I. Voss,M. Torre Jorgenson,Michelle Ann Walvoord,Bruce K. Wylie,Lesleigh Anderson,Lyndsay B. Ball,Maryla Deszcz-Pan,Tristan P. Wellman,Thomas A. Ager +12 more
TL;DR: In this paper, the authors present the results of a pioneering ∼1,800 line-kilometer airborne electromagnetic survey that shows sediments deposited over the past ∼4 million years and the configuration of permafrost to depths of ∼100 meters in the Yukon Flats area near Fort Yukon, Alaska.
Journal ArticleDOI
Stratigraphy and palaeoclimatic significance of Late Quaternary loess-palaeosol sequences of the Last Interglacial-Glacial cycle in central Alaska
Daniel R. Muhs,Thomas A. Ager,E. Arthur Bettis Iii,John P. McGeehin,Josh Been,James E. Begét,Milan J. Pavich,Thomas W. Stafford,De Anne S.P. Stevens +8 more
TL;DR: In this article, a geochronological study of central Alaska showed that only moderate loess deposition took place during the last glacial period and that vegetation plays a key role in loess accumulation in Alaska.
Journal ArticleDOI
An 18 million year record of vegetation and climate change in northwestern Canada and Alaska: tectonic and global climatic correlates
James White,Thomas A. Ager,David P. Adam,Estella B. Leopold,Gaisheng Liu,H. Jette,Charles E. Schweger +6 more
TL;DR: In this paper, the authors reconstruct long-term vegetation/paleoclimatic trends, spanning the last 18 million years, in Alaska, Yukon and far western Northwest Territories.
Journal ArticleDOI
Quaternary climates and sea levels of the u.s. Atlantic coastal plain.
TL;DR: The composite sea level chronology for the Atlantic Coastal Plain is inconsistent with independent estimates of eustatic sea level positions during interglacial intervals of the last 200,000 years and Hydroisostatic adjustment from glacial-interglacial sea level fluctuations, lithospheric flexure, and isostatic uplift from sediment unloading due to erosion provide possible mechanisms to account for the discrepancies.