Holocene Ice-Flow Speedup in the Vicinity of the South Pole

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Standard

Holocene Ice-Flow Speedup in the Vicinity of the South Pole. / Lilien, David A.; Fudge, T. J.; Koutnik, Michelle R.; Conway, Howard; Osterberg, Erich C.; Ferris, David G.; Waddington, Edwin D.; Stevens, C. Max.

I: Geophysical Research Letters, Bind 45, Nr. 13, 16.07.2018, s. 6557-6565.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Lilien, DA, Fudge, TJ, Koutnik, MR, Conway, H, Osterberg, EC, Ferris, DG, Waddington, ED & Stevens, CM 2018, 'Holocene Ice-Flow Speedup in the Vicinity of the South Pole', Geophysical Research Letters, bind 45, nr. 13, s. 6557-6565. https://doi.org/10.1029/2018GL078253

APA

Lilien, D. A., Fudge, T. J., Koutnik, M. R., Conway, H., Osterberg, E. C., Ferris, D. G., Waddington, E. D., & Stevens, C. M. (2018). Holocene Ice-Flow Speedup in the Vicinity of the South Pole. Geophysical Research Letters, 45(13), 6557-6565. https://doi.org/10.1029/2018GL078253

Vancouver

Lilien DA, Fudge TJ, Koutnik MR, Conway H, Osterberg EC, Ferris DG o.a. Holocene Ice-Flow Speedup in the Vicinity of the South Pole. Geophysical Research Letters. 2018 jul. 16;45(13):6557-6565. https://doi.org/10.1029/2018GL078253

Author

Lilien, David A. ; Fudge, T. J. ; Koutnik, Michelle R. ; Conway, Howard ; Osterberg, Erich C. ; Ferris, David G. ; Waddington, Edwin D. ; Stevens, C. Max. / Holocene Ice-Flow Speedup in the Vicinity of the South Pole. I: Geophysical Research Letters. 2018 ; Bind 45, Nr. 13. s. 6557-6565.

Bibtex

@article{dc6e4fc3cf224483ad45363a5405db3d,
title = "Holocene Ice-Flow Speedup in the Vicinity of the South Pole",
abstract = "The South Pole Ice Core (SPICEcore) was drilled at least 180 km from an ice-flow divide. Thus, the annual-equivalent layer thicknesses in the core are affected by spatial variations in accumulation upstream in addition to temporal variations in regional accumulation. We use a new method to compare the SPICEcore accumulation record, derived by correcting measured layer thicknesses for thinning, with an accumulation record derived from new GPS and radar measurements upstream. When ice speeds are modeled as increasing by 15% since 10 ka, the upstream accumulation explains 77% of the variance in the SPICEcore-derived accumulation (versus 22% without speedup). This result demonstrates that the ice-flow direction and spatial pattern of accumulation were stable throughout the Holocene. The 15% speedup in turn suggests a slight (3–4%) steepening or thickening of the ice-sheet interior and provides a new constraint on the evolution of the East Antarctic Ice Sheet following the glacial termination.",
keywords = "EAIS, ice core, ice-penetrating radar, South Pole, SPICEcore",
author = "Lilien, {David A.} and Fudge, {T. J.} and Koutnik, {Michelle R.} and Howard Conway and Osterberg, {Erich C.} and Ferris, {David G.} and Waddington, {Edwin D.} and Stevens, {C. Max}",
year = "2018",
month = jul,
day = "16",
doi = "10.1029/2018GL078253",
language = "English",
volume = "45",
pages = "6557--6565",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "13",

}

RIS

TY - JOUR

T1 - Holocene Ice-Flow Speedup in the Vicinity of the South Pole

AU - Lilien, David A.

AU - Fudge, T. J.

AU - Koutnik, Michelle R.

AU - Conway, Howard

AU - Osterberg, Erich C.

AU - Ferris, David G.

AU - Waddington, Edwin D.

AU - Stevens, C. Max

PY - 2018/7/16

Y1 - 2018/7/16

N2 - The South Pole Ice Core (SPICEcore) was drilled at least 180 km from an ice-flow divide. Thus, the annual-equivalent layer thicknesses in the core are affected by spatial variations in accumulation upstream in addition to temporal variations in regional accumulation. We use a new method to compare the SPICEcore accumulation record, derived by correcting measured layer thicknesses for thinning, with an accumulation record derived from new GPS and radar measurements upstream. When ice speeds are modeled as increasing by 15% since 10 ka, the upstream accumulation explains 77% of the variance in the SPICEcore-derived accumulation (versus 22% without speedup). This result demonstrates that the ice-flow direction and spatial pattern of accumulation were stable throughout the Holocene. The 15% speedup in turn suggests a slight (3–4%) steepening or thickening of the ice-sheet interior and provides a new constraint on the evolution of the East Antarctic Ice Sheet following the glacial termination.

AB - The South Pole Ice Core (SPICEcore) was drilled at least 180 km from an ice-flow divide. Thus, the annual-equivalent layer thicknesses in the core are affected by spatial variations in accumulation upstream in addition to temporal variations in regional accumulation. We use a new method to compare the SPICEcore accumulation record, derived by correcting measured layer thicknesses for thinning, with an accumulation record derived from new GPS and radar measurements upstream. When ice speeds are modeled as increasing by 15% since 10 ka, the upstream accumulation explains 77% of the variance in the SPICEcore-derived accumulation (versus 22% without speedup). This result demonstrates that the ice-flow direction and spatial pattern of accumulation were stable throughout the Holocene. The 15% speedup in turn suggests a slight (3–4%) steepening or thickening of the ice-sheet interior and provides a new constraint on the evolution of the East Antarctic Ice Sheet following the glacial termination.

KW - EAIS

KW - ice core

KW - ice-penetrating radar

KW - South Pole

KW - SPICEcore

UR - http://www.scopus.com/inward/record.url?scp=85050512548&partnerID=8YFLogxK

U2 - 10.1029/2018GL078253

DO - 10.1029/2018GL078253

M3 - Journal article

AN - SCOPUS:85050512548

VL - 45

SP - 6557

EP - 6565

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 13

ER -

ID: 229316017