Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth

Carys P. Cook, Tina Van De Flierdt, Trevor Williams, Sidney R. Hemming, Masao Iwai, Munemasa Kobayashi, Francisco J. Jimenez-Espejo, Carlota Escutia, Jhon Jairo González, Boo Keun Khim, Robert M. McKay, Sandra Passchier, Steven M. Bohaty, Christina R. Riesselman, Lisa Tauxe, Saiko Sugisaki, Alberto Lopez Galindo, Molly O. Patterson, Francesca Sangiorgi, Elizabeth L. PierceHenk Brinkhuis, Adam Klaus, Annick Fehr, James A.P. Bendle, Peter K. Bijl, Stephanie A. Carr, Robert B. Dunbar, José Abel Flores, Travis G. Hayden, Kota Katsuki, Gee Soo Kong, Mutsumi Nakai, Matthew P. Olney, Stephen F. Pekar, Jörg Pross, Ursula Röhl, Toyosaburo Sakai, Prakash K. Shrivastava, Catherine E. Stickley, Shouting Tuo, Kevin Welsh, Masako Yamane

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

Warm intervals within the Pliocene epoch (5.33-2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO 2 concentrations similar to today. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Adélie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited during these warm intervals suggests active erosion of continental bedrock from within the Wilkes Subglacial Basin, an area today buried beneath the East Antarctic ice sheet. We interpret this erosion to be associated with retreat of the ice sheet margin several hundreds of kilometres inland and conclude that the East Antarctic ice sheet was sensitive to climatic warmth during the Pliocene.

Original languageEnglish
Pages (from-to)765-769
Number of pages5
JournalNature Geoscience
Volume6
Issue number9
DOIs
StatePublished - Sep 2013

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ice sheet
Pliocene
erosion
highstand
sedimentary sequence
basin
marine sediment
provenance
sea surface
bedrock
temperature
sea level
surface water
ice
productivity

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Cook, C. P., Van De Flierdt, T., Williams, T., Hemming, S. R., Iwai, M., Kobayashi, M., ... Yamane, M. (2013). Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth. Nature Geoscience, 6(9), 765-769. https://doi.org/10.1038/ngeo1889
Cook, Carys P. ; Van De Flierdt, Tina ; Williams, Trevor ; Hemming, Sidney R. ; Iwai, Masao ; Kobayashi, Munemasa ; Jimenez-Espejo, Francisco J. ; Escutia, Carlota ; González, Jhon Jairo ; Khim, Boo Keun ; McKay, Robert M. ; Passchier, Sandra ; Bohaty, Steven M. ; Riesselman, Christina R. ; Tauxe, Lisa ; Sugisaki, Saiko ; Galindo, Alberto Lopez ; Patterson, Molly O. ; Sangiorgi, Francesca ; Pierce, Elizabeth L. ; Brinkhuis, Henk ; Klaus, Adam ; Fehr, Annick ; Bendle, James A.P. ; Bijl, Peter K. ; Carr, Stephanie A. ; Dunbar, Robert B. ; Flores, José Abel ; Hayden, Travis G. ; Katsuki, Kota ; Kong, Gee Soo ; Nakai, Mutsumi ; Olney, Matthew P. ; Pekar, Stephen F. ; Pross, Jörg ; Röhl, Ursula ; Sakai, Toyosaburo ; Shrivastava, Prakash K. ; Stickley, Catherine E. ; Tuo, Shouting ; Welsh, Kevin ; Yamane, Masako. / Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth. In: Nature Geoscience. 2013 ; Vol. 6, No. 9. pp. 765-769.
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abstract = "Warm intervals within the Pliocene epoch (5.33-2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO 2 concentrations similar to today. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Ad{\'e}lie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited during these warm intervals suggests active erosion of continental bedrock from within the Wilkes Subglacial Basin, an area today buried beneath the East Antarctic ice sheet. We interpret this erosion to be associated with retreat of the ice sheet margin several hundreds of kilometres inland and conclude that the East Antarctic ice sheet was sensitive to climatic warmth during the Pliocene.",
author = "Cook, {Carys P.} and {Van De Flierdt}, Tina and Trevor Williams and Hemming, {Sidney R.} and Masao Iwai and Munemasa Kobayashi and Jimenez-Espejo, {Francisco J.} and Carlota Escutia and Gonz{\'a}lez, {Jhon Jairo} and Khim, {Boo Keun} and McKay, {Robert M.} and Sandra Passchier and Bohaty, {Steven M.} and Riesselman, {Christina R.} and Lisa Tauxe and Saiko Sugisaki and Galindo, {Alberto Lopez} and Patterson, {Molly O.} and Francesca Sangiorgi and Pierce, {Elizabeth L.} and Henk Brinkhuis and Adam Klaus and Annick Fehr and Bendle, {James A.P.} and Bijl, {Peter K.} and Carr, {Stephanie A.} and Dunbar, {Robert B.} and Flores, {Jos{\'e} Abel} and Hayden, {Travis G.} and Kota Katsuki and Kong, {Gee Soo} and Mutsumi Nakai and Olney, {Matthew P.} and Pekar, {Stephen F.} and J{\"o}rg Pross and Ursula R{\"o}hl and Toyosaburo Sakai and Shrivastava, {Prakash K.} and Stickley, {Catherine E.} and Shouting Tuo and Kevin Welsh and Masako Yamane",
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Cook, CP, Van De Flierdt, T, Williams, T, Hemming, SR, Iwai, M, Kobayashi, M, Jimenez-Espejo, FJ, Escutia, C, González, JJ, Khim, BK, McKay, RM, Passchier, S, Bohaty, SM, Riesselman, CR, Tauxe, L, Sugisaki, S, Galindo, AL, Patterson, MO, Sangiorgi, F, Pierce, EL, Brinkhuis, H, Klaus, A, Fehr, A, Bendle, JAP, Bijl, PK, Carr, SA, Dunbar, RB, Flores, JA, Hayden, TG, Katsuki, K, Kong, GS, Nakai, M, Olney, MP, Pekar, SF, Pross, J, Röhl, U, Sakai, T, Shrivastava, PK, Stickley, CE, Tuo, S, Welsh, K & Yamane, M 2013, 'Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth', Nature Geoscience, vol. 6, no. 9, pp. 765-769. https://doi.org/10.1038/ngeo1889

Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth. / Cook, Carys P.; Van De Flierdt, Tina; Williams, Trevor; Hemming, Sidney R.; Iwai, Masao; Kobayashi, Munemasa; Jimenez-Espejo, Francisco J.; Escutia, Carlota; González, Jhon Jairo; Khim, Boo Keun; McKay, Robert M.; Passchier, Sandra; Bohaty, Steven M.; Riesselman, Christina R.; Tauxe, Lisa; Sugisaki, Saiko; Galindo, Alberto Lopez; Patterson, Molly O.; Sangiorgi, Francesca; Pierce, Elizabeth L.; Brinkhuis, Henk; Klaus, Adam; Fehr, Annick; Bendle, James A.P.; Bijl, Peter K.; Carr, Stephanie A.; Dunbar, Robert B.; Flores, José Abel; Hayden, Travis G.; Katsuki, Kota; Kong, Gee Soo; Nakai, Mutsumi; Olney, Matthew P.; Pekar, Stephen F.; Pross, Jörg; Röhl, Ursula; Sakai, Toyosaburo; Shrivastava, Prakash K.; Stickley, Catherine E.; Tuo, Shouting; Welsh, Kevin; Yamane, Masako.

In: Nature Geoscience, Vol. 6, No. 9, 09.2013, p. 765-769.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth

AU - Cook, Carys P.

AU - Van De Flierdt, Tina

AU - Williams, Trevor

AU - Hemming, Sidney R.

AU - Iwai, Masao

AU - Kobayashi, Munemasa

AU - Jimenez-Espejo, Francisco J.

AU - Escutia, Carlota

AU - González, Jhon Jairo

AU - Khim, Boo Keun

AU - McKay, Robert M.

AU - Passchier, Sandra

AU - Bohaty, Steven M.

AU - Riesselman, Christina R.

AU - Tauxe, Lisa

AU - Sugisaki, Saiko

AU - Galindo, Alberto Lopez

AU - Patterson, Molly O.

AU - Sangiorgi, Francesca

AU - Pierce, Elizabeth L.

AU - Brinkhuis, Henk

AU - Klaus, Adam

AU - Fehr, Annick

AU - Bendle, James A.P.

AU - Bijl, Peter K.

AU - Carr, Stephanie A.

AU - Dunbar, Robert B.

AU - Flores, José Abel

AU - Hayden, Travis G.

AU - Katsuki, Kota

AU - Kong, Gee Soo

AU - Nakai, Mutsumi

AU - Olney, Matthew P.

AU - Pekar, Stephen F.

AU - Pross, Jörg

AU - Röhl, Ursula

AU - Sakai, Toyosaburo

AU - Shrivastava, Prakash K.

AU - Stickley, Catherine E.

AU - Tuo, Shouting

AU - Welsh, Kevin

AU - Yamane, Masako

PY - 2013/9

Y1 - 2013/9

N2 - Warm intervals within the Pliocene epoch (5.33-2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO 2 concentrations similar to today. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Adélie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited during these warm intervals suggests active erosion of continental bedrock from within the Wilkes Subglacial Basin, an area today buried beneath the East Antarctic ice sheet. We interpret this erosion to be associated with retreat of the ice sheet margin several hundreds of kilometres inland and conclude that the East Antarctic ice sheet was sensitive to climatic warmth during the Pliocene.

AB - Warm intervals within the Pliocene epoch (5.33-2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO 2 concentrations similar to today. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Adélie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited during these warm intervals suggests active erosion of continental bedrock from within the Wilkes Subglacial Basin, an area today buried beneath the East Antarctic ice sheet. We interpret this erosion to be associated with retreat of the ice sheet margin several hundreds of kilometres inland and conclude that the East Antarctic ice sheet was sensitive to climatic warmth during the Pliocene.

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U2 - 10.1038/ngeo1889

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Cook CP, Van De Flierdt T, Williams T, Hemming SR, Iwai M, Kobayashi M et al. Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth. Nature Geoscience. 2013 Sep;6(9):765-769. https://doi.org/10.1038/ngeo1889