noaa-cave-26770 El Capitan Cave, SE Alaska 75,000 Year Speleothem Stable Isotope Data Wilcox, P.S.; Dorale, J.A.; Baichtal, J.F.; Spötl, C.; Fowell, S.J.; Edwards, R.L.; Kovarik, J.L. El Capitan Cave, SE Alaska 75,000 Year Speleothem Stable Isotope Data 2019-05-27 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/26770 Investigator P.S. Wilcox Investigator J.A. Dorale Investigator J.F. Baichtal Investigator C. Spötl Investigator S.J. Fowell Investigator R.L. Edwards Investigator J.L. Kovarik earth science paleoclimate speleothems carbon isotopes earth science paleoclimate speleothems oxygen isotopes geoscientificInformation 75125 cal yr BP 11100 cal yr BP Complete 56.162 56.162 -133.319 -133.319 80 80 Continent North America United States Of America Alaska El Capitan Cave>LATITUDE 56.162>LONGITUDE -133.319 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Paul S. Wilcox, Jeffrey A. Dorale, James F. Baichtal, Christoph Spotl, Sarah J. Fowell, R. Lawrence Edwards, Johanna L. Kovarik 2019 Scientific Reports 7880 9 10.1038/s41598-019-44231-1 https://www.nature.com/articles/s41598-019-44231-1

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 5C 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. STUDY NOTES: Speleothem stable isotope (d18O, d13C) data from El Capitan Cave, southeast Alaska, for the past 75,000 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/alaska/el-capitan2019iso.txt NOAA Template File; El Capitan Cave Stable Isotope Data USA/NOAA DIF Version 9.8.4 2019-05-30 2019-05-30