期刊
QUATERNARY RESEARCH
卷 71, 期 1, 页码 22-26出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1016/j.yqres.2008.09.005
关键词
Tebenkof Glacier; Alaska; First Millennium AD; Little Ice Age; Holocene climate; Tree rings; Dendrochronology; Glacier fluctuation
资金
- National Science Foundation [9912124, 9910805, 9905493]
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [9910805, 9912124] Funding Source: National Science Foundation
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [9905493] Funding Source: National Science Foundation
Tree-ring crossdates from glacially killed logs show that Tebenkof Glacier advanced into a forefield forest in the AD 710s and 720s. Recession from this First Millennium AD (FMA) advance occurred before the 950s, after which the ice margin readvanced in the 1280s to 1320s at the start of the Little Ice Age (LIA). A more extensive LIA advance was underway from the 1640s to 1670s, and the terminus stayed at or near its LIA maximum until the 1890s. These are the first absolute tree-ring crossdates for a FMA glacier advance in North America and support growing evidence from northwestern North America and Europe for a significant cool interval in the centuries around AD 500. (C) 2008 University of Washington. All rights reserved.
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