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Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions

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Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions. / Colleoni, Florence; De Santis, Laura; Montoli, Enea; Olivo, Elisabetta; Sorlien, Christopher C.; Bart, Philip J.; Gasson, Edward G.W.; Bergamasco, Andrea; Sauli, Chiara; Wardell, Nigel; Prato, Stefano.

In: Scientific Reports, Vol. 8, 11323, 27.07.2018.

Research output: Contribution to journalArticle

Harvard

Colleoni, F, De Santis, L, Montoli, E, Olivo, E, Sorlien, CC, Bart, PJ, Gasson, EGW, Bergamasco, A, Sauli, C, Wardell, N & Prato, S 2018, 'Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions', Scientific Reports, vol. 8, 11323. https://doi.org/10.1038/s41598-018-29718-7

APA

Colleoni, F., De Santis, L., Montoli, E., Olivo, E., Sorlien, C. C., Bart, P. J., ... Prato, S. (2018). Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions. Scientific Reports, 8, [11323]. https://doi.org/10.1038/s41598-018-29718-7

Vancouver

Colleoni F, De Santis L, Montoli E, Olivo E, Sorlien CC, Bart PJ et al. Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions. Scientific Reports. 2018 Jul 27;8. 11323. https://doi.org/10.1038/s41598-018-29718-7

Author

Colleoni, Florence ; De Santis, Laura ; Montoli, Enea ; Olivo, Elisabetta ; Sorlien, Christopher C. ; Bart, Philip J. ; Gasson, Edward G.W. ; Bergamasco, Andrea ; Sauli, Chiara ; Wardell, Nigel ; Prato, Stefano. / Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions. In: Scientific Reports. 2018 ; Vol. 8.

Bibtex

@article{560f970c90a241f0a3c8f7a080bc7ea1,
title = "Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions",
abstract = "Over the past 34 Million years, the Antarctic continental shelf has gradually deepened due to ice sheet loading, thermal subsidence, and erosion from repeated glaciations. The deepening that is recorded in the sedimentary deposits around the Antarctic margin indicates that after the mid-Miocene Climate Optimum (≈15 Ma), Antarctic Ice Sheet (AIS) dynamical response to climate conditions changed. We explore end-members for maximum AIS extent, based on ice-sheet simulations of a late-Pleistocene and a mid-Miocene glaciation. Fundamental dynamical differences emerge as a consequence of atmospheric forcing, eustatic sea level and continental shelf evolution. We show that the AIS contributed to the amplification of its own sensitivity to ocean forcing by gradually expanding and eroding the continental shelf, that probably changed its tipping points through time. The lack of past topographic and bathymetric reconstructions implies that so far, we still have an incomplete understanding of AIS fast response to past warm climate conditions, which is crucial to constrain its future evolution.",
author = "Florence Colleoni and {De Santis}, Laura and Enea Montoli and Elisabetta Olivo and Sorlien, {Christopher C.} and Bart, {Philip J.} and Gasson, {Edward G.W.} and Andrea Bergamasco and Chiara Sauli and Nigel Wardell and Stefano Prato",
year = "2018",
month = "7",
day = "27",
doi = "10.1038/s41598-018-29718-7",
language = "English",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Springer Nature",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions

AU - Colleoni, Florence

AU - De Santis, Laura

AU - Montoli, Enea

AU - Olivo, Elisabetta

AU - Sorlien, Christopher C.

AU - Bart, Philip J.

AU - Gasson, Edward G.W.

AU - Bergamasco, Andrea

AU - Sauli, Chiara

AU - Wardell, Nigel

AU - Prato, Stefano

PY - 2018/7/27

Y1 - 2018/7/27

N2 - Over the past 34 Million years, the Antarctic continental shelf has gradually deepened due to ice sheet loading, thermal subsidence, and erosion from repeated glaciations. The deepening that is recorded in the sedimentary deposits around the Antarctic margin indicates that after the mid-Miocene Climate Optimum (≈15 Ma), Antarctic Ice Sheet (AIS) dynamical response to climate conditions changed. We explore end-members for maximum AIS extent, based on ice-sheet simulations of a late-Pleistocene and a mid-Miocene glaciation. Fundamental dynamical differences emerge as a consequence of atmospheric forcing, eustatic sea level and continental shelf evolution. We show that the AIS contributed to the amplification of its own sensitivity to ocean forcing by gradually expanding and eroding the continental shelf, that probably changed its tipping points through time. The lack of past topographic and bathymetric reconstructions implies that so far, we still have an incomplete understanding of AIS fast response to past warm climate conditions, which is crucial to constrain its future evolution.

AB - Over the past 34 Million years, the Antarctic continental shelf has gradually deepened due to ice sheet loading, thermal subsidence, and erosion from repeated glaciations. The deepening that is recorded in the sedimentary deposits around the Antarctic margin indicates that after the mid-Miocene Climate Optimum (≈15 Ma), Antarctic Ice Sheet (AIS) dynamical response to climate conditions changed. We explore end-members for maximum AIS extent, based on ice-sheet simulations of a late-Pleistocene and a mid-Miocene glaciation. Fundamental dynamical differences emerge as a consequence of atmospheric forcing, eustatic sea level and continental shelf evolution. We show that the AIS contributed to the amplification of its own sensitivity to ocean forcing by gradually expanding and eroding the continental shelf, that probably changed its tipping points through time. The lack of past topographic and bathymetric reconstructions implies that so far, we still have an incomplete understanding of AIS fast response to past warm climate conditions, which is crucial to constrain its future evolution.

UR - http://www.scopus.com/inward/record.url?scp=85050729723&partnerID=8YFLogxK

U2 - 10.1038/s41598-018-29718-7

DO - 10.1038/s41598-018-29718-7

M3 - Article

C2 - 30054536

AN - SCOPUS:85050729723

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 11323

ER -