Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget

Joshua K. Cuzzone, Peter U. Clark, Anders E. Carlson, David J. Ullman, Vincent R. Rinterknecht, Glenn A. Milne, Juha Pekka Lunkka, Barbara Wohlfarth, Shaun A. Marcott, Marc Caffee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The last deglaciation of the Scandinavian Ice Sheet (SIS) from ~21, 000 to 13,000 yr ago is well-constrained by several hundred 10Be and 14C ages. The subsequent retreat history, however, is established primarily from minimum-limiting 14C ages and incomplete Baltic-Sea varve records, leaving a substantial fraction of final SIS retreat history poorly constrained. Here we develop a high-resolution chronology for the final deglaciation of the SIS based on 79 10Be cosmogenic exposure dates sampled along three transects spanning southern to northern Sweden and Finland. Combining this new chronology with existing 10Be ages on deglaciation since the Last Glacial Maximum shows that rates of SIS margin retreat were strongly influenced by deglacial millennial-scale climate variability and its effect on surface mass balance, with regional modulation of retreat associated with dynamical controls. Ice-volume estimates constrained by our new chronology suggest that the SIS contributed ~8 m sea-level equivalent to global sea-level rise between ~14.5 ka and 10 ka. Final deglaciation was largely complete by ~10.5 ka, with highest rates of sea-level rise occurring during the Bølling-Allerød, a 50% decrease during the Younger Dryas, and a rapid increase during the early Holocene. Combining our SIS volume estimates with estimated contributions from other remaining Northern Hemisphere ice sheets suggests that the Antarctic Ice Sheet (AIS) contributed 14.4±5.9 m to global sea-level rise since ~13 ka. This new constraint supports those studies that indicate that an ice volume of 15 m or more of equivalent sea-level rise was lost from the AIS during the last deglaciation.

Original languageEnglish
Pages (from-to)34-41
Number of pages8
JournalEarth and Planetary Science Letters
Volume448
Early online date24 May 2016
DOIs
Publication statusPublished - 15 Aug 2016

Fingerprint

Scandinavian Ice Sheet
Sea level
Ice
deglaciation
sea level
budgets
ice
Holocene
ice sheet
chronology
last deglaciation
varve
Younger Dryas
history
Last Glacial Maximum
budget
mass balance
Northern Hemisphere
histories
transect

Keywords

  • Holocene
  • Ice sheets
  • Sea level

Cite this

Cuzzone, Joshua K. ; Clark, Peter U. ; Carlson, Anders E. ; Ullman, David J. ; Rinterknecht, Vincent R. ; Milne, Glenn A. ; Lunkka, Juha Pekka ; Wohlfarth, Barbara ; Marcott, Shaun A. ; Caffee, Marc. / Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget. In: Earth and Planetary Science Letters. 2016 ; Vol. 448. pp. 34-41.
@article{c12f0eb04fed479cb30c10364b3f668a,
title = "Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget",
abstract = "The last deglaciation of the Scandinavian Ice Sheet (SIS) from ~21, 000 to 13,000 yr ago is well-constrained by several hundred 10Be and 14C ages. The subsequent retreat history, however, is established primarily from minimum-limiting 14C ages and incomplete Baltic-Sea varve records, leaving a substantial fraction of final SIS retreat history poorly constrained. Here we develop a high-resolution chronology for the final deglaciation of the SIS based on 79 10Be cosmogenic exposure dates sampled along three transects spanning southern to northern Sweden and Finland. Combining this new chronology with existing 10Be ages on deglaciation since the Last Glacial Maximum shows that rates of SIS margin retreat were strongly influenced by deglacial millennial-scale climate variability and its effect on surface mass balance, with regional modulation of retreat associated with dynamical controls. Ice-volume estimates constrained by our new chronology suggest that the SIS contributed ~8 m sea-level equivalent to global sea-level rise between ~14.5 ka and 10 ka. Final deglaciation was largely complete by ~10.5 ka, with highest rates of sea-level rise occurring during the B{\o}lling-Aller{\o}d, a 50{\%} decrease during the Younger Dryas, and a rapid increase during the early Holocene. Combining our SIS volume estimates with estimated contributions from other remaining Northern Hemisphere ice sheets suggests that the Antarctic Ice Sheet (AIS) contributed 14.4±5.9 m to global sea-level rise since ~13 ka. This new constraint supports those studies that indicate that an ice volume of 15 m or more of equivalent sea-level rise was lost from the AIS during the last deglaciation.",
keywords = "Holocene, Ice sheets, Sea level",
author = "Cuzzone, {Joshua K.} and Clark, {Peter U.} and Carlson, {Anders E.} and Ullman, {David J.} and Rinterknecht, {Vincent R.} and Milne, {Glenn A.} and Lunkka, {Juha Pekka} and Barbara Wohlfarth and Marcott, {Shaun A.} and Marc Caffee",
year = "2016",
month = "8",
day = "15",
doi = "10.1016/j.epsl.2016.05.019",
language = "English",
volume = "448",
pages = "34--41",
journal = "Earth and Planetary Science Letters",
issn = "0012-821X",
publisher = "Elsevier",

}

Cuzzone, JK, Clark, PU, Carlson, AE, Ullman, DJ, Rinterknecht, VR, Milne, GA, Lunkka, JP, Wohlfarth, B, Marcott, SA & Caffee, M 2016, 'Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget', Earth and Planetary Science Letters, vol. 448, pp. 34-41. https://doi.org/10.1016/j.epsl.2016.05.019

Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget. / Cuzzone, Joshua K.; Clark, Peter U.; Carlson, Anders E.; Ullman, David J.; Rinterknecht, Vincent R.; Milne, Glenn A.; Lunkka, Juha Pekka; Wohlfarth, Barbara; Marcott, Shaun A.; Caffee, Marc.

In: Earth and Planetary Science Letters, Vol. 448, 15.08.2016, p. 34-41.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Final deglaciation of the Scandinavian Ice Sheet and implications for the Holocene global sea-level budget

AU - Cuzzone, Joshua K.

AU - Clark, Peter U.

AU - Carlson, Anders E.

AU - Ullman, David J.

AU - Rinterknecht, Vincent R.

AU - Milne, Glenn A.

AU - Lunkka, Juha Pekka

AU - Wohlfarth, Barbara

AU - Marcott, Shaun A.

AU - Caffee, Marc

PY - 2016/8/15

Y1 - 2016/8/15

N2 - The last deglaciation of the Scandinavian Ice Sheet (SIS) from ~21, 000 to 13,000 yr ago is well-constrained by several hundred 10Be and 14C ages. The subsequent retreat history, however, is established primarily from minimum-limiting 14C ages and incomplete Baltic-Sea varve records, leaving a substantial fraction of final SIS retreat history poorly constrained. Here we develop a high-resolution chronology for the final deglaciation of the SIS based on 79 10Be cosmogenic exposure dates sampled along three transects spanning southern to northern Sweden and Finland. Combining this new chronology with existing 10Be ages on deglaciation since the Last Glacial Maximum shows that rates of SIS margin retreat were strongly influenced by deglacial millennial-scale climate variability and its effect on surface mass balance, with regional modulation of retreat associated with dynamical controls. Ice-volume estimates constrained by our new chronology suggest that the SIS contributed ~8 m sea-level equivalent to global sea-level rise between ~14.5 ka and 10 ka. Final deglaciation was largely complete by ~10.5 ka, with highest rates of sea-level rise occurring during the Bølling-Allerød, a 50% decrease during the Younger Dryas, and a rapid increase during the early Holocene. Combining our SIS volume estimates with estimated contributions from other remaining Northern Hemisphere ice sheets suggests that the Antarctic Ice Sheet (AIS) contributed 14.4±5.9 m to global sea-level rise since ~13 ka. This new constraint supports those studies that indicate that an ice volume of 15 m or more of equivalent sea-level rise was lost from the AIS during the last deglaciation.

AB - The last deglaciation of the Scandinavian Ice Sheet (SIS) from ~21, 000 to 13,000 yr ago is well-constrained by several hundred 10Be and 14C ages. The subsequent retreat history, however, is established primarily from minimum-limiting 14C ages and incomplete Baltic-Sea varve records, leaving a substantial fraction of final SIS retreat history poorly constrained. Here we develop a high-resolution chronology for the final deglaciation of the SIS based on 79 10Be cosmogenic exposure dates sampled along three transects spanning southern to northern Sweden and Finland. Combining this new chronology with existing 10Be ages on deglaciation since the Last Glacial Maximum shows that rates of SIS margin retreat were strongly influenced by deglacial millennial-scale climate variability and its effect on surface mass balance, with regional modulation of retreat associated with dynamical controls. Ice-volume estimates constrained by our new chronology suggest that the SIS contributed ~8 m sea-level equivalent to global sea-level rise between ~14.5 ka and 10 ka. Final deglaciation was largely complete by ~10.5 ka, with highest rates of sea-level rise occurring during the Bølling-Allerød, a 50% decrease during the Younger Dryas, and a rapid increase during the early Holocene. Combining our SIS volume estimates with estimated contributions from other remaining Northern Hemisphere ice sheets suggests that the Antarctic Ice Sheet (AIS) contributed 14.4±5.9 m to global sea-level rise since ~13 ka. This new constraint supports those studies that indicate that an ice volume of 15 m or more of equivalent sea-level rise was lost from the AIS during the last deglaciation.

KW - Holocene

KW - Ice sheets

KW - Sea level

UR - http://www.scopus.com/inward/record.url?scp=84969850427&partnerID=8YFLogxK

U2 - 10.1016/j.epsl.2016.05.019

DO - 10.1016/j.epsl.2016.05.019

M3 - Article

AN - SCOPUS:84969850427

VL - 448

SP - 34

EP - 41

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

SN - 0012-821X

ER -