Millennial-scale glacial climate variability in Southeastern Alaska follows Dansgaard-Oeschger cyclicity

被引：14
|
作者：
Wilcox, Paul S. [1 ,2 ]
Dorale, Jeffrey A. [3 ]
Baichtal, James F. [4 ]
Spotl, Christoph [2 ]
Fowell, Sarah J. [1 ]
Edwards, R. Lawrence [5 ]
Kovarik, Johanna L. [6 ]
机构：
[1] Univ Alaska Fairbanks, Geosci Dept, Fairbanks, AK 99775 USA
[2] Univ Innsbruck, Inst Geol, A-6020 Innsbruck, Austria
[3] Univ Iowa, Dept Earth & Environm Sci, Iowa City, IA 52252 USA
[4] US Forest Serv, Tongass Natl Forest, Thorne Bay, AK 99919 USA
[5] Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
[6] US Forest Serv, Mineral & Geol Management, Denver, CO 80401 USA
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
关键词：
SUMMER MONSOON; LAST; SPELEOTHEM; CAVE; RECORDS; INSTABILITY; AUSTRALIA; PRECISION; ELEVATION; COLUMBIA;
D O I：
10.1038/s41598-019-44231-1
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A stalagmite from Prince of Wales Island grew episodically between similar to 75,000 and similar to 11,100 yr BP; interrupted by seven hiatuses. Hiatuses most likely correspond to permafrost development and a temperature drop of up to 5 degrees C from modern conditions. Intervals of calcite deposition place tight constraints on the timing of mild climatic episodes in Alaska during the last glacial period, when permafrost was absent, allowing water infiltration into the karst system. These periods of calcite deposition are synchronous, within dating uncertainties, with Greenland Interstadials 1, 10, 11, 12c, 14b-14e, 16.1a, 17.2, and 20c.
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页数：8
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