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

Paul S. Wilcox; Jeffrey A. Dorale; James F. Baichtal; Christoph Spötl; Sarah J. Fowell; R. Lawrence Edwards; Johanna L. Kovarik

doi:10.1038/s41598-019-44231-1

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

Paul S. Wilcox, Jeffrey A. Dorale, James F. Baichtal, Christoph Spötl, Sarah J. Fowell, R. Lawrence Edwards, Johanna L. Kovarik

Tutkimustuotokset: Kirjoitus lehdessä tai erikoisnumeron toimittaminen › Artikkeli › Tieteellinen › vertaisarvioitu

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Abstrakti

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.

Alkuperäiskieli	englanti
Artikkeli	7880
Sivumäärä	8
Julkaisu	Scientific Reports
Vuosikerta	9
DOI - pysyväislinkit	https://doi.org/10.1038/s41598-019-44231-1
Tila	Julkaistu - 27 toukok. 2019
Julkaistu ulkoisesti	Kyllä
OKM-julkaisutyyppi	A1 Vertaisarvioitu alkuperäisartikkeli

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10.1038/s41598-019-44231-1Lisenssi: CC BY

s41598-019-44231-1
© The Author(s) 2019
Lopullinen julkaistu versio, 1,57 MBLisenssi: CC BY

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title = "Millennial-scale glacial climate variability in Southeastern Alaska follows Dansgaard-Oeschger cyclicity",

abstract = "A stalagmite from Prince of Wales Island grew episodically between \textasciitilde{}75,000 and \textasciitilde{}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.",

keywords = "climate changes, palaeoclimatology, speleothems, Alaska, geochemistry, calcite, climatic periods",

author = "Wilcox, \{Paul S.\} and Dorale, \{Jeffrey A.\} and Baichtal, \{James F.\} and Christoph Sp{\"o}tl and Fowell, \{Sarah J.\} and Edwards, \{R. Lawrence\} and Kovarik, \{Johanna L.\}",

year = "2019",

month = may,

day = "27",

doi = "10.1038/s41598-019-44231-1",

language = "English",

volume = "9",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Springer",

}

TY - JOUR

T1 - Millennial-scale glacial climate variability in Southeastern Alaska follows Dansgaard-Oeschger cyclicity

AU - Wilcox, Paul S.

AU - Dorale, Jeffrey A.

AU - Baichtal, James F.

AU - Spötl, Christoph

AU - Fowell, Sarah J.

AU - Edwards, R. Lawrence

AU - Kovarik, Johanna L.

PY - 2019/5/27

Y1 - 2019/5/27

N2 - 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.

AB - 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.

KW - climate changes

KW - palaeoclimatology

KW - speleothems

KW - Alaska

KW - geochemistry

KW - calcite

KW - climatic periods

U2 - 10.1038/s41598-019-44231-1

DO - 10.1038/s41598-019-44231-1

M3 - Article

SN - 2045-2322

VL - 9

JO - Scientific Reports

JF - Scientific Reports

M1 - 7880

ER -

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

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