Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation

Alastair G C Graham, Gerhard Kuhn, Ove Meisel, Claus Dieter Hillenbrand, Dominic A. Hodgson, Werner Ehrmann, Lukas Wacker, Paul Wintersteller, Christian Ferreira, Miriam Romer, Duanne WHITE, Gerhard Bohrmann

Research output: Contribution to journalArticle

7 Citations (Scopus)
5 Downloads (Pure)

Abstract

The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies.
Original languageEnglish
Article number14798
Pages (from-to)1-15
Number of pages15
JournalNature Communications
Volume8
DOIs
Publication statusPublished - 2017

Fingerprint

Ice Cover
Glaciers
glaciers
Climate
Oceans and Seas
climate
Landforms
Geologic Sediments
landforms
Estuaries
Sediments
Southern Hemisphere
coolers
shelves
Islands
beds
oceans
sediments
sectors
History

Cite this

Graham, A. G. C., Kuhn, G., Meisel, O., Hillenbrand, C. D., Hodgson, D. A., Ehrmann, W., ... Bohrmann, G. (2017). Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation. Nature Communications, 8, 1-15. [14798]. https://doi.org/10.1038/ncomms14798
Graham, Alastair G C ; Kuhn, Gerhard ; Meisel, Ove ; Hillenbrand, Claus Dieter ; Hodgson, Dominic A. ; Ehrmann, Werner ; Wacker, Lukas ; Wintersteller, Paul ; Ferreira, Christian ; Romer, Miriam ; WHITE, Duanne ; Bohrmann, Gerhard. / Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation. In: Nature Communications. 2017 ; Vol. 8. pp. 1-15.
@article{d4e0f539b2a043c4af8cd8483ffdf560,
title = "Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation",
abstract = "The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies.",
author = "Graham, {Alastair G C} and Gerhard Kuhn and Ove Meisel and Hillenbrand, {Claus Dieter} and Hodgson, {Dominic A.} and Werner Ehrmann and Lukas Wacker and Paul Wintersteller and Christian Ferreira and Miriam Romer and Duanne WHITE and Gerhard Bohrmann",
year = "2017",
doi = "10.1038/ncomms14798",
language = "English",
volume = "8",
pages = "1--15",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

Graham, AGC, Kuhn, G, Meisel, O, Hillenbrand, CD, Hodgson, DA, Ehrmann, W, Wacker, L, Wintersteller, P, Ferreira, C, Romer, M, WHITE, D & Bohrmann, G 2017, 'Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation', Nature Communications, vol. 8, 14798, pp. 1-15. https://doi.org/10.1038/ncomms14798

Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation. / Graham, Alastair G C; Kuhn, Gerhard; Meisel, Ove; Hillenbrand, Claus Dieter; Hodgson, Dominic A.; Ehrmann, Werner; Wacker, Lukas; Wintersteller, Paul; Ferreira, Christian; Romer, Miriam; WHITE, Duanne; Bohrmann, Gerhard.

In: Nature Communications, Vol. 8, 14798, 2017, p. 1-15.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Major advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation

AU - Graham, Alastair G C

AU - Kuhn, Gerhard

AU - Meisel, Ove

AU - Hillenbrand, Claus Dieter

AU - Hodgson, Dominic A.

AU - Ehrmann, Werner

AU - Wacker, Lukas

AU - Wintersteller, Paul

AU - Ferreira, Christian

AU - Romer, Miriam

AU - WHITE, Duanne

AU - Bohrmann, Gerhard

PY - 2017

Y1 - 2017

N2 - The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies.

AB - The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing of the last glacial advance and termination on sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data and marine sediment cores, we resolve the record of glaciation offshore of South Georgia through the transition from the Last Glacial Maximum to Holocene. We show a sea-bed landform imprint of a shelf-wide last glacial advance and progressive deglaciation. Renewed glacier resurgence in the fjords between c. 15,170 and 13,340 yr ago coincided with a period of cooler, wetter climate known as the Antarctic Cold Reversal, revealing a cryospheric response to an Antarctic climate pattern extending into the Atlantic sector of the Southern Ocean. We conclude that the last glaciation of South Georgia was extensive, and the sensitivity of its glaciers to climate variability during the last termination more significant than implied by previous studies.

UR - http://www.scopus.com/inward/record.url?scp=85015666371&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/major-advance-south-georgia-glaciers-during-antarctic-cold-reversal-following-extensive-subantarctic

U2 - 10.1038/ncomms14798

DO - 10.1038/ncomms14798

M3 - Article

VL - 8

SP - 1

EP - 15

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 14798

ER -