19 Holocene Climate and Lakes (Posters)
Tuesday, 26 March 2002
8:00 AM - 12:00 PM
ASYNCHRONEITY OF MAJOR HOLOCENE LAKE-LEVEL CHANGES ACROSS MAINE
Paper number: 19-7
Program: THEME
Time: 8:00 AM – 12:00 PM
Authors
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Ann C. Dieffenbacher-KrallUniv of Maine, Orono, ME
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Christopher C. DorionC.C. Dorion Geol Svcs, Orono, ME
Abstract
Numerous studies indicate relative consistency in major Holocene lake-level changes in the Midwest. However, a survey of lake-level studies from sites across New England, the Mid-Atlantic states, and neighboring Canada shows significant variability in both timing and direction of water-balance changes. Using the methods refined by Almquist, et al., in their study of Mansell Pond, Central Maine, we are developing Holocene lake-level curves for three lakes in Maine. These studies, along with the Mansell Pond study, will provide a comprehensive picture of lake-level changes across the northern and eastern portions of the state. Preliminary results indicate that the magnitude and trend of water-balance changes are consistent across the region. However, the timing of these fluctuations is asynchronous.