Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation

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Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation. / Allaart, Lis; Schomacker, Anders; Larsen, Nicolaj K.; Nørmark, Egon; Rydningen, Tom Arne; Farnsworth, Wesley R.; Retelle, Michael; Brynjólfsson, Skafti; Forwick, Matthias; Kjellman, Sofia E.

In: Quaternary Science Reviews, Vol. 251, 106717, 2021.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Allaart, L, Schomacker, A, Larsen, NK, Nørmark, E, Rydningen, TA, Farnsworth, WR, Retelle, M, Brynjólfsson, S, Forwick, M & Kjellman, SE 2021, 'Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation', Quaternary Science Reviews, vol. 251, 106717. https://doi.org/10.1016/j.quascirev.2020.106717

APA

Allaart, L., Schomacker, A., Larsen, N. K., Nørmark, E., Rydningen, T. A., Farnsworth, W. R., ... Kjellman, S. E. (2021). Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation. Quaternary Science Reviews, 251, [106717]. https://doi.org/10.1016/j.quascirev.2020.106717

Vancouver

Allaart L, Schomacker A, Larsen NK, Nørmark E, Rydningen TA, Farnsworth WR et al. Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation. Quaternary Science Reviews. 2021;251. 106717. https://doi.org/10.1016/j.quascirev.2020.106717

Author

Allaart, Lis ; Schomacker, Anders ; Larsen, Nicolaj K. ; Nørmark, Egon ; Rydningen, Tom Arne ; Farnsworth, Wesley R. ; Retelle, Michael ; Brynjólfsson, Skafti ; Forwick, Matthias ; Kjellman, Sofia E. / Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation. In: Quaternary Science Reviews. 2021 ; Vol. 251.

Bibtex

@article{80793b404eee4989926f100b49420835,
title = "Glacial history of the {\AA}sgardfonna Ice Cap, NE Spitsbergen, since the last glaciation",
abstract = "The response of glaciers and ice caps to past climate change provides important insight into how they will react to ongoing and future global warming. In Svalbard, the Holocene glacial history has been studied for many cirque and valley glaciers. However, little is known about how the larger ice caps in Svalbard responded to Late Glacial and Holocene climate changes. Here we use lake sediment cores and geophysical data from Femmilsj{\o}en, one of Svalbard's largest lakes, to reconstruct the glacial history of the {\AA}sgardfonna Ice Cap since the last deglaciation. We find that Femmilsj{\o}en potentially deglaciated prior to 16.1 ± 0.3 cal ka BP and became isolated from the marine environment between 11.7 ± 0.3 to 11.3 ± 0.2 cal ka BP. Glacial meltwater runoff was absent between 10.1 ± 0.4 and 3.2 ± 0.2 cal ka BP, indicating that {\AA}sgardfonna was greatly reduced or disappeared in the Early and Middle Holocene. Deposition of glacial-meltwater sediments re-commenced in Femmilsj{\o}en at c. 3.2 ± 0.2 cal ka BP, indicating glacier re-growth in the Femmilsj{\o}en catchment and the onset of the Neoglacial. The glacier(s) in the Femmilsj{\o}en catchment area reached sizes no smaller than their modern extents already at c. 2.1 ± 0.7 cal ka BP. Our results suggest that larger Svalbard ice caps such as {\AA}sgardfonna are very sensitive to climate changes and probably melted completely during the Holocene Thermal Maximum. Such information can be used as important constraints in future ice-cap simulations.",
keywords = "Deglaciation, Glacier, Holocene history, Holocene thermal maximum, Neoglacial, Sediments, Sub-bottom data, Svalbard",
author = "Lis Allaart and Anders Schomacker and Larsen, {Nicolaj K.} and Egon N{\o}rmark and Rydningen, {Tom Arne} and Farnsworth, {Wesley R.} and Michael Retelle and Skafti Brynj{\'o}lfsson and Matthias Forwick and Kjellman, {Sofia E.}",
year = "2021",
doi = "10.1016/j.quascirev.2020.106717",
language = "English",
volume = "251",
journal = "Quaternary Science Reviews",
issn = "0277-3791",
publisher = "Pergamon Press",

}

RIS

TY - JOUR

T1 - Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation

AU - Allaart, Lis

AU - Schomacker, Anders

AU - Larsen, Nicolaj K.

AU - Nørmark, Egon

AU - Rydningen, Tom Arne

AU - Farnsworth, Wesley R.

AU - Retelle, Michael

AU - Brynjólfsson, Skafti

AU - Forwick, Matthias

AU - Kjellman, Sofia E.

PY - 2021

Y1 - 2021

N2 - The response of glaciers and ice caps to past climate change provides important insight into how they will react to ongoing and future global warming. In Svalbard, the Holocene glacial history has been studied for many cirque and valley glaciers. However, little is known about how the larger ice caps in Svalbard responded to Late Glacial and Holocene climate changes. Here we use lake sediment cores and geophysical data from Femmilsjøen, one of Svalbard's largest lakes, to reconstruct the glacial history of the Åsgardfonna Ice Cap since the last deglaciation. We find that Femmilsjøen potentially deglaciated prior to 16.1 ± 0.3 cal ka BP and became isolated from the marine environment between 11.7 ± 0.3 to 11.3 ± 0.2 cal ka BP. Glacial meltwater runoff was absent between 10.1 ± 0.4 and 3.2 ± 0.2 cal ka BP, indicating that Åsgardfonna was greatly reduced or disappeared in the Early and Middle Holocene. Deposition of glacial-meltwater sediments re-commenced in Femmilsjøen at c. 3.2 ± 0.2 cal ka BP, indicating glacier re-growth in the Femmilsjøen catchment and the onset of the Neoglacial. The glacier(s) in the Femmilsjøen catchment area reached sizes no smaller than their modern extents already at c. 2.1 ± 0.7 cal ka BP. Our results suggest that larger Svalbard ice caps such as Åsgardfonna are very sensitive to climate changes and probably melted completely during the Holocene Thermal Maximum. Such information can be used as important constraints in future ice-cap simulations.

AB - The response of glaciers and ice caps to past climate change provides important insight into how they will react to ongoing and future global warming. In Svalbard, the Holocene glacial history has been studied for many cirque and valley glaciers. However, little is known about how the larger ice caps in Svalbard responded to Late Glacial and Holocene climate changes. Here we use lake sediment cores and geophysical data from Femmilsjøen, one of Svalbard's largest lakes, to reconstruct the glacial history of the Åsgardfonna Ice Cap since the last deglaciation. We find that Femmilsjøen potentially deglaciated prior to 16.1 ± 0.3 cal ka BP and became isolated from the marine environment between 11.7 ± 0.3 to 11.3 ± 0.2 cal ka BP. Glacial meltwater runoff was absent between 10.1 ± 0.4 and 3.2 ± 0.2 cal ka BP, indicating that Åsgardfonna was greatly reduced or disappeared in the Early and Middle Holocene. Deposition of glacial-meltwater sediments re-commenced in Femmilsjøen at c. 3.2 ± 0.2 cal ka BP, indicating glacier re-growth in the Femmilsjøen catchment and the onset of the Neoglacial. The glacier(s) in the Femmilsjøen catchment area reached sizes no smaller than their modern extents already at c. 2.1 ± 0.7 cal ka BP. Our results suggest that larger Svalbard ice caps such as Åsgardfonna are very sensitive to climate changes and probably melted completely during the Holocene Thermal Maximum. Such information can be used as important constraints in future ice-cap simulations.

KW - Deglaciation

KW - Glacier

KW - Holocene history

KW - Holocene thermal maximum

KW - Neoglacial

KW - Sediments

KW - Sub-bottom data

KW - Svalbard

U2 - 10.1016/j.quascirev.2020.106717

DO - 10.1016/j.quascirev.2020.106717

M3 - Journal article

AN - SCOPUS:85097097908

VL - 251

JO - Quaternary Science Reviews

JF - Quaternary Science Reviews

SN - 0277-3791

M1 - 106717

ER -

ID: 253074444