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Instability of the Northeast Greenland Ice Stream over the last 45,000 years

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Instability of the Northeast Greenland Ice Stream over the last 45,000 years. / Larsen, Nicolaj K.; Levy, Laura B.; Carlson, Anders E.; Buizert, Christo; Olsen, Jesper; Strunk, Astrid; Bjørk, Anders A.; Skov, Daniel S.

In: Nature Communications, Vol. 9, 1872 (2018), 14.05.2018.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Larsen, NK, Levy, LB, Carlson, AE, Buizert, C, Olsen, J, Strunk, A, Bjørk, AA & Skov, DS 2018, 'Instability of the Northeast Greenland Ice Stream over the last 45,000 years', Nature Communications, vol. 9, 1872 (2018). https://doi.org/10.1038/s41467-018-04312-7

APA

Larsen, N. K., Levy, L. B., Carlson, A. E., Buizert, C., Olsen, J., Strunk, A., Bjørk, A. A., & Skov, D. S. (2018). Instability of the Northeast Greenland Ice Stream over the last 45,000 years. Nature Communications, 9, [1872 (2018)]. https://doi.org/10.1038/s41467-018-04312-7

CBE

Larsen NK, Levy LB, Carlson AE, Buizert C, Olsen J, Strunk A, Bjørk AA, Skov DS. 2018. Instability of the Northeast Greenland Ice Stream over the last 45,000 years. Nature Communications. 9:Article 1872 (2018). https://doi.org/10.1038/s41467-018-04312-7

MLA

Vancouver

Larsen NK, Levy LB, Carlson AE, Buizert C, Olsen J, Strunk A et al. Instability of the Northeast Greenland Ice Stream over the last 45,000 years. Nature Communications. 2018 May 14;9. 1872 (2018). https://doi.org/10.1038/s41467-018-04312-7

Author

Larsen, Nicolaj K. ; Levy, Laura B. ; Carlson, Anders E. ; Buizert, Christo ; Olsen, Jesper ; Strunk, Astrid ; Bjørk, Anders A. ; Skov, Daniel S. / Instability of the Northeast Greenland Ice Stream over the last 45,000 years. In: Nature Communications. 2018 ; Vol. 9.

Bibtex

@article{f8ffafb8ef7944619656fdb3d3ca7ab5,
title = "Instability of the Northeast Greenland Ice Stream over the last 45,000 years",
abstract = "The sensitivity of the Northeast Greenland Ice Stream (NEGIS) to prolonged warm periods is largely unknown and geological records documenting such long-Term changes are needed to place current observations in perspective. Here we use cosmogenic surface exposure and radiocarbon ages to determine the magnitude of NEGIS margin fluctuations over the last 45 kyr (thousand years). We find that the NEGIS experienced slow early Holocene ice-margin retreat of 30-40 m a-1, likely as a result of the buttressing effect of sea-ice or shelf-ice. The NEGIS was ~20-70 km behind its present ice-extent ~41-26 ka and ~7.8-1.2 ka; both periods of high orbital precession index and/or summer temperatures within the projected warming for the end of this century. We show that the NEGIS was smaller than present for approximately half of the last ~45 kyr and is susceptible to subtle changes in climate, which has implications for future stability of this ice stream.",
author = "Larsen, {Nicolaj K.} and Levy, {Laura B.} and Carlson, {Anders E.} and Christo Buizert and Jesper Olsen and Astrid Strunk and Bj{\o}rk, {Anders A.} and Skov, {Daniel S.}",
year = "2018",
month = may,
day = "14",
doi = "10.1038/s41467-018-04312-7",
language = "English",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Instability of the Northeast Greenland Ice Stream over the last 45,000 years

AU - Larsen, Nicolaj K.

AU - Levy, Laura B.

AU - Carlson, Anders E.

AU - Buizert, Christo

AU - Olsen, Jesper

AU - Strunk, Astrid

AU - Bjørk, Anders A.

AU - Skov, Daniel S.

PY - 2018/5/14

Y1 - 2018/5/14

N2 - The sensitivity of the Northeast Greenland Ice Stream (NEGIS) to prolonged warm periods is largely unknown and geological records documenting such long-Term changes are needed to place current observations in perspective. Here we use cosmogenic surface exposure and radiocarbon ages to determine the magnitude of NEGIS margin fluctuations over the last 45 kyr (thousand years). We find that the NEGIS experienced slow early Holocene ice-margin retreat of 30-40 m a-1, likely as a result of the buttressing effect of sea-ice or shelf-ice. The NEGIS was ~20-70 km behind its present ice-extent ~41-26 ka and ~7.8-1.2 ka; both periods of high orbital precession index and/or summer temperatures within the projected warming for the end of this century. We show that the NEGIS was smaller than present for approximately half of the last ~45 kyr and is susceptible to subtle changes in climate, which has implications for future stability of this ice stream.

AB - The sensitivity of the Northeast Greenland Ice Stream (NEGIS) to prolonged warm periods is largely unknown and geological records documenting such long-Term changes are needed to place current observations in perspective. Here we use cosmogenic surface exposure and radiocarbon ages to determine the magnitude of NEGIS margin fluctuations over the last 45 kyr (thousand years). We find that the NEGIS experienced slow early Holocene ice-margin retreat of 30-40 m a-1, likely as a result of the buttressing effect of sea-ice or shelf-ice. The NEGIS was ~20-70 km behind its present ice-extent ~41-26 ka and ~7.8-1.2 ka; both periods of high orbital precession index and/or summer temperatures within the projected warming for the end of this century. We show that the NEGIS was smaller than present for approximately half of the last ~45 kyr and is susceptible to subtle changes in climate, which has implications for future stability of this ice stream.

U2 - 10.1038/s41467-018-04312-7

DO - 10.1038/s41467-018-04312-7

M3 - Journal article

C2 - 29760384

AN - SCOPUS:85047013734

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 1872 (2018)

ER -