Sixty years of ice form and flow at Camp Century, Greenland

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Sixty years of ice form and flow at Camp Century, Greenland. / Colgan, William; Jakobsen, Jakob; Solgaard, Anne; Lokkegaard, Anja; Abermann, Jakob; Khan, Shfaqat A.; Csatho, Beata; MacGregor, Joseph A.; Fausto, Robert S.; Karlsson, Nanna; Pedersen, Allan o.; Andersen, Signe B.; Sonntag, John; Hvidberg, Christine S.; Ahlstrom, Andreas P.

In: Journal of Glaciology, Vol. 69, No. 276, 02.08.2023, p. 919-929.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Colgan, W, Jakobsen, J, Solgaard, A, Lokkegaard, A, Abermann, J, Khan, SA, Csatho, B, MacGregor, JA, Fausto, RS, Karlsson, N, Pedersen, AO, Andersen, SB, Sonntag, J, Hvidberg, CS & Ahlstrom, AP 2023, 'Sixty years of ice form and flow at Camp Century, Greenland', Journal of Glaciology, vol. 69, no. 276, pp. 919-929. https://doi.org/10.1017/jog.2022.112

APA

Colgan, W., Jakobsen, J., Solgaard, A., Lokkegaard, A., Abermann, J., Khan, S. A., Csatho, B., MacGregor, J. A., Fausto, R. S., Karlsson, N., Pedersen, A. O., Andersen, S. B., Sonntag, J., Hvidberg, C. S., & Ahlstrom, A. P. (2023). Sixty years of ice form and flow at Camp Century, Greenland. Journal of Glaciology, 69(276), 919-929. https://doi.org/10.1017/jog.2022.112

Vancouver

Colgan W, Jakobsen J, Solgaard A, Lokkegaard A, Abermann J, Khan SA et al. Sixty years of ice form and flow at Camp Century, Greenland. Journal of Glaciology. 2023 Aug 2;69(276):919-929. https://doi.org/10.1017/jog.2022.112

Author

Colgan, William ; Jakobsen, Jakob ; Solgaard, Anne ; Lokkegaard, Anja ; Abermann, Jakob ; Khan, Shfaqat A. ; Csatho, Beata ; MacGregor, Joseph A. ; Fausto, Robert S. ; Karlsson, Nanna ; Pedersen, Allan o. ; Andersen, Signe B. ; Sonntag, John ; Hvidberg, Christine S. ; Ahlstrom, Andreas P. / Sixty years of ice form and flow at Camp Century, Greenland. In: Journal of Glaciology. 2023 ; Vol. 69, No. 276. pp. 919-929.

Bibtex

@article{4ad62db6ff654d01876196e5037e97fb,
title = "Sixty years of ice form and flow at Camp Century, Greenland",
abstract = "The magnitude and azimuth of horizontal ice flow at Camp Century, Greenland have been measured several times since 1963. Here, we provide a further two independent measurements over the 2017-21 period. Our consensus estimate of horizontal ice flow from four independent satellite-positioning solutions is 3.65 +/- 0.13 m a(-1) at an azimuth of 236 +/- 2 degrees. A portion of the small, but significant, differences in ice velocity and azimuth reported between studies likely results from spatial gradients in ice flow. This highlights the importance of restricting inter-study comparisons of ice flow estimates to measurements surveyed within a horizontal distance of one ice thickness from each other. We suggest that ice flow at Camp Century is stable on seasonal to multi-decadal timescales. The airborne and satellite laser altimetry record indicates an ice thickening trend of 1.1 +/- 0.3 cm a(-1) since 1994. This thickening trend is qualitatively consistent with previously inferred ongoing millennial-scale ice thickening at Camp Century. The ice flow divide immediately north of Camp Century may now be migrating southward, although the reasons for this divide migration are poorly understood. The Camp Century flowlines presently terminate in the vicinity of Innaqqissorsuup Oqquani Sermeq (Gade Gletsjer) on the Melville Bay coast.",
keywords = "Ice dynamics, ice velocity, laser altimetry, MASS-BALANCE, SHEET, ACCUMULATION, ELEVATION, PROGRAM, TEMPERATURE, VELOCITY",
author = "William Colgan and Jakob Jakobsen and Anne Solgaard and Anja Lokkegaard and Jakob Abermann and Khan, {Shfaqat A.} and Beata Csatho and MacGregor, {Joseph A.} and Fausto, {Robert S.} and Nanna Karlsson and Pedersen, {Allan o.} and Andersen, {Signe B.} and John Sonntag and Hvidberg, {Christine S.} and Ahlstrom, {Andreas P.}",
year = "2023",
month = aug,
day = "2",
doi = "10.1017/jog.2022.112",
language = "English",
volume = "69",
pages = "919--929",
journal = "Journal of Glaciology",
issn = "0022-1430",
publisher = "International Glaciological Society",
number = "276",

}

RIS

TY - JOUR

T1 - Sixty years of ice form and flow at Camp Century, Greenland

AU - Colgan, William

AU - Jakobsen, Jakob

AU - Solgaard, Anne

AU - Lokkegaard, Anja

AU - Abermann, Jakob

AU - Khan, Shfaqat A.

AU - Csatho, Beata

AU - MacGregor, Joseph A.

AU - Fausto, Robert S.

AU - Karlsson, Nanna

AU - Pedersen, Allan o.

AU - Andersen, Signe B.

AU - Sonntag, John

AU - Hvidberg, Christine S.

AU - Ahlstrom, Andreas P.

PY - 2023/8/2

Y1 - 2023/8/2

N2 - The magnitude and azimuth of horizontal ice flow at Camp Century, Greenland have been measured several times since 1963. Here, we provide a further two independent measurements over the 2017-21 period. Our consensus estimate of horizontal ice flow from four independent satellite-positioning solutions is 3.65 +/- 0.13 m a(-1) at an azimuth of 236 +/- 2 degrees. A portion of the small, but significant, differences in ice velocity and azimuth reported between studies likely results from spatial gradients in ice flow. This highlights the importance of restricting inter-study comparisons of ice flow estimates to measurements surveyed within a horizontal distance of one ice thickness from each other. We suggest that ice flow at Camp Century is stable on seasonal to multi-decadal timescales. The airborne and satellite laser altimetry record indicates an ice thickening trend of 1.1 +/- 0.3 cm a(-1) since 1994. This thickening trend is qualitatively consistent with previously inferred ongoing millennial-scale ice thickening at Camp Century. The ice flow divide immediately north of Camp Century may now be migrating southward, although the reasons for this divide migration are poorly understood. The Camp Century flowlines presently terminate in the vicinity of Innaqqissorsuup Oqquani Sermeq (Gade Gletsjer) on the Melville Bay coast.

AB - The magnitude and azimuth of horizontal ice flow at Camp Century, Greenland have been measured several times since 1963. Here, we provide a further two independent measurements over the 2017-21 period. Our consensus estimate of horizontal ice flow from four independent satellite-positioning solutions is 3.65 +/- 0.13 m a(-1) at an azimuth of 236 +/- 2 degrees. A portion of the small, but significant, differences in ice velocity and azimuth reported between studies likely results from spatial gradients in ice flow. This highlights the importance of restricting inter-study comparisons of ice flow estimates to measurements surveyed within a horizontal distance of one ice thickness from each other. We suggest that ice flow at Camp Century is stable on seasonal to multi-decadal timescales. The airborne and satellite laser altimetry record indicates an ice thickening trend of 1.1 +/- 0.3 cm a(-1) since 1994. This thickening trend is qualitatively consistent with previously inferred ongoing millennial-scale ice thickening at Camp Century. The ice flow divide immediately north of Camp Century may now be migrating southward, although the reasons for this divide migration are poorly understood. The Camp Century flowlines presently terminate in the vicinity of Innaqqissorsuup Oqquani Sermeq (Gade Gletsjer) on the Melville Bay coast.

KW - Ice dynamics

KW - ice velocity

KW - laser altimetry

KW - MASS-BALANCE

KW - SHEET

KW - ACCUMULATION

KW - ELEVATION

KW - PROGRAM

KW - TEMPERATURE

KW - VELOCITY

U2 - 10.1017/jog.2022.112

DO - 10.1017/jog.2022.112

M3 - Journal article

VL - 69

SP - 919

EP - 929

JO - Journal of Glaciology

JF - Journal of Glaciology

SN - 0022-1430

IS - 276

ER -

ID: 330777428