Late Holocene glacial advance and ice shelf growth in Barilari Bay, Graham Land, West Antarctic Peninsula

The LARISSA Group

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Three marine sediment cores were collected along the length of the fjord axis of Barilari Bay, Graham Land, west Antarctic Peninsula (65°55′S, 64°43′W). Multi-proxy analytical results constrained by high-resolution geochronological methods (210Pb, radiocarbon, 137Cs) in concert with historical observations capture a record of Holocene paleoenvironmental variability. Our results suggest early and middle Holocene (>7022-2815 cal. [calibrated] yr B.P.) retreated glacial positions and seasonally open marine conditions with increased primary productivity. Climatic cooling increased sea ice coverage and decreased primary productivity during the Neoglacial (2815 to cal. 730 cal. yr B.P.). This climatic cooling culminated with glacial advance to maximum Holocene positions and expansion of a fjord-wide ice shelf during the Little Ice Age (LIA) (ca. 730-82 cal. yr B.P.). Seasonally open marine conditions were achieved and remnant ice shelves decayed within the context of recent rapid regional warming (82 cal. yr B.P. to present). Our findings agree with previously observed late Holocene cooling and glacial advance across the Antarctic Peninsula, suggesting that the LIA was a regionally significant event with few disparities in timing and magnitude. Comparison of the LIA Antarctic Peninsula record to the rest of the Southern Hemisphere demonstrates close synchronicity in the southeast Pacific and southern most Atlantic region but less coherence for the southwest Pacifc and Indian Oceans. Comparisons with the Northern Hemisphere demonstrate that the LIA Antarctic Peninsula record was contemporaneous with pre-LIA cooling and sea ice expansion in the North Atlantic-Arctic, suggesting a global reach for these events.

Original languageEnglish
Pages (from-to)297-315
Number of pages19
JournalBulletin of the Geological Society of America
Volume127
Issue number1-2
DOIs
StatePublished - 1 Jan 2015

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ice shelf
Little Ice Age
Holocene
cooling
fjord
sea ice
Neoglacial
productivity
marine sediment
sediment core
Southern Hemisphere
Northern Hemisphere
warming
land
comparison

Cite this

@article{93968f4ef1da41ac8e5ef6a532099c40,
title = "Late Holocene glacial advance and ice shelf growth in Barilari Bay, Graham Land, West Antarctic Peninsula",
abstract = "Three marine sediment cores were collected along the length of the fjord axis of Barilari Bay, Graham Land, west Antarctic Peninsula (65°55′S, 64°43′W). Multi-proxy analytical results constrained by high-resolution geochronological methods (210Pb, radiocarbon, 137Cs) in concert with historical observations capture a record of Holocene paleoenvironmental variability. Our results suggest early and middle Holocene (>7022-2815 cal. [calibrated] yr B.P.) retreated glacial positions and seasonally open marine conditions with increased primary productivity. Climatic cooling increased sea ice coverage and decreased primary productivity during the Neoglacial (2815 to cal. 730 cal. yr B.P.). This climatic cooling culminated with glacial advance to maximum Holocene positions and expansion of a fjord-wide ice shelf during the Little Ice Age (LIA) (ca. 730-82 cal. yr B.P.). Seasonally open marine conditions were achieved and remnant ice shelves decayed within the context of recent rapid regional warming (82 cal. yr B.P. to present). Our findings agree with previously observed late Holocene cooling and glacial advance across the Antarctic Peninsula, suggesting that the LIA was a regionally significant event with few disparities in timing and magnitude. Comparison of the LIA Antarctic Peninsula record to the rest of the Southern Hemisphere demonstrates close synchronicity in the southeast Pacific and southern most Atlantic region but less coherence for the southwest Pacifc and Indian Oceans. Comparisons with the Northern Hemisphere demonstrate that the LIA Antarctic Peninsula record was contemporaneous with pre-LIA cooling and sea ice expansion in the North Atlantic-Arctic, suggesting a global reach for these events.",
author = "{The LARISSA Group} and Christ, {Andrew J.} and Manique Talaia-Murray and Natalie Elking and Domack, {Eugene W.} and Amy Leventer and Caroline Lavoie and Stefanie Brachfeld and Stefanie Brachfeld and Robert Gilbert and Jeong, {Sun Mi} and Stephen Petrushak and Julia Wellner and G. Balco and S. Brachfeld and {de Batist}, M. and E. Domack and A. Gordon and A. Haran and Henriet, {J. P.} and B. Huber and S. Ishman and S. Jeong and M. King and C. Lavoie and A. Leventer and M. McCormick and E. Mosley-Thompson and E. Pettit and T. Scambos and C. Smith and L. Thompson and M. Truffer and {van Dover}, C. and M. Vernet and J. Wellner and K. Yu and V. Zagorodnov",
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Late Holocene glacial advance and ice shelf growth in Barilari Bay, Graham Land, West Antarctic Peninsula. / The LARISSA Group.

In: Bulletin of the Geological Society of America, Vol. 127, No. 1-2, 01.01.2015, p. 297-315.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Late Holocene glacial advance and ice shelf growth in Barilari Bay, Graham Land, West Antarctic Peninsula

AU - The LARISSA Group

AU - Christ, Andrew J.

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AU - Elking, Natalie

AU - Domack, Eugene W.

AU - Leventer, Amy

AU - Lavoie, Caroline

AU - Brachfeld, Stefanie

AU - Brachfeld, Stefanie

AU - Gilbert, Robert

AU - Jeong, Sun Mi

AU - Petrushak, Stephen

AU - Wellner, Julia

AU - Balco, G.

AU - Brachfeld, S.

AU - de Batist, M.

AU - Domack, E.

AU - Gordon, A.

AU - Haran, A.

AU - Henriet, J. P.

AU - Huber, B.

AU - Ishman, S.

AU - Jeong, S.

AU - King, M.

AU - Lavoie, C.

AU - Leventer, A.

AU - McCormick, M.

AU - Mosley-Thompson, E.

AU - Pettit, E.

AU - Scambos, T.

AU - Smith, C.

AU - Thompson, L.

AU - Truffer, M.

AU - van Dover, C.

AU - Vernet, M.

AU - Wellner, J.

AU - Yu, K.

AU - Zagorodnov, V.

PY - 2015/1/1

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N2 - Three marine sediment cores were collected along the length of the fjord axis of Barilari Bay, Graham Land, west Antarctic Peninsula (65°55′S, 64°43′W). Multi-proxy analytical results constrained by high-resolution geochronological methods (210Pb, radiocarbon, 137Cs) in concert with historical observations capture a record of Holocene paleoenvironmental variability. Our results suggest early and middle Holocene (>7022-2815 cal. [calibrated] yr B.P.) retreated glacial positions and seasonally open marine conditions with increased primary productivity. Climatic cooling increased sea ice coverage and decreased primary productivity during the Neoglacial (2815 to cal. 730 cal. yr B.P.). This climatic cooling culminated with glacial advance to maximum Holocene positions and expansion of a fjord-wide ice shelf during the Little Ice Age (LIA) (ca. 730-82 cal. yr B.P.). Seasonally open marine conditions were achieved and remnant ice shelves decayed within the context of recent rapid regional warming (82 cal. yr B.P. to present). Our findings agree with previously observed late Holocene cooling and glacial advance across the Antarctic Peninsula, suggesting that the LIA was a regionally significant event with few disparities in timing and magnitude. Comparison of the LIA Antarctic Peninsula record to the rest of the Southern Hemisphere demonstrates close synchronicity in the southeast Pacific and southern most Atlantic region but less coherence for the southwest Pacifc and Indian Oceans. Comparisons with the Northern Hemisphere demonstrate that the LIA Antarctic Peninsula record was contemporaneous with pre-LIA cooling and sea ice expansion in the North Atlantic-Arctic, suggesting a global reach for these events.

AB - Three marine sediment cores were collected along the length of the fjord axis of Barilari Bay, Graham Land, west Antarctic Peninsula (65°55′S, 64°43′W). Multi-proxy analytical results constrained by high-resolution geochronological methods (210Pb, radiocarbon, 137Cs) in concert with historical observations capture a record of Holocene paleoenvironmental variability. Our results suggest early and middle Holocene (>7022-2815 cal. [calibrated] yr B.P.) retreated glacial positions and seasonally open marine conditions with increased primary productivity. Climatic cooling increased sea ice coverage and decreased primary productivity during the Neoglacial (2815 to cal. 730 cal. yr B.P.). This climatic cooling culminated with glacial advance to maximum Holocene positions and expansion of a fjord-wide ice shelf during the Little Ice Age (LIA) (ca. 730-82 cal. yr B.P.). Seasonally open marine conditions were achieved and remnant ice shelves decayed within the context of recent rapid regional warming (82 cal. yr B.P. to present). Our findings agree with previously observed late Holocene cooling and glacial advance across the Antarctic Peninsula, suggesting that the LIA was a regionally significant event with few disparities in timing and magnitude. Comparison of the LIA Antarctic Peninsula record to the rest of the Southern Hemisphere demonstrates close synchronicity in the southeast Pacific and southern most Atlantic region but less coherence for the southwest Pacifc and Indian Oceans. Comparisons with the Northern Hemisphere demonstrate that the LIA Antarctic Peninsula record was contemporaneous with pre-LIA cooling and sea ice expansion in the North Atlantic-Arctic, suggesting a global reach for these events.

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