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

A stalagmite from Prince of Wales Island grew episodically between ~75,000 and ~11,100 yr BP; interrupted by seven hiatuses. Hiatuses most likely correspond to permafrost development and a temperature drop of up to 5 °C from modern conditions. Intervals of calcite deposition place tight constraints...

Full description

Bibliographic Details
Published in:Scientific Reports
Main Authors: Wilcox, P.S., Dorale, J.A., Baichtal, J., Spötl, C., Fowell, S.J., Edwards, R.L., Kovarik, J.L.
Format: Article in Journal/Newspaper
Language:English
Published: Nature Publishing Group 2019
Subjects:
Greenland
Prince of Wales Island
permafrost
Alaska
Online Access:https://doi.org/10.1038/s41598-019-44231-1
https://diglib.uibk.ac.at/doi/10.1038/s41598-019-44231-1
https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-5793
Description
Summary:A stalagmite from Prince of Wales Island grew episodically between ~75,000 and ~11,100 yr BP; interrupted by seven hiatuses. Hiatuses most likely correspond to permafrost development and a temperature drop of up to 5 °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. Version of record

Similar Items