Skip to content

Research at St Andrews

Tidewater glacier surges initiated at the terminus

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Standard

Tidewater glacier surges initiated at the terminus. / Sevestre, Heïdi; Benn, Douglas I.; Luckman, Adrian; Nuth, Christopher; Kohler, Jack; Lindbäck, Katrin; Pettersson, Rickard.

In: Journal of Geophysical Research - Earth Surface, Vol. In press, 26.04.2018.

Research output: Contribution to journalArticle

Harvard

Sevestre, H, Benn, DI, Luckman, A, Nuth, C, Kohler, J, Lindbäck, K & Pettersson, R 2018, 'Tidewater glacier surges initiated at the terminus' Journal of Geophysical Research - Earth Surface, vol. In press. https://doi.org/10.1029/2017JF004358

APA

Sevestre, H., Benn, D. I., Luckman, A., Nuth, C., Kohler, J., Lindbäck, K., & Pettersson, R. (2018). Tidewater glacier surges initiated at the terminus. Journal of Geophysical Research - Earth Surface, In press. https://doi.org/10.1029/2017JF004358

Vancouver

Sevestre H, Benn DI, Luckman A, Nuth C, Kohler J, Lindbäck K et al. Tidewater glacier surges initiated at the terminus. Journal of Geophysical Research - Earth Surface. 2018 Apr 26;In press. https://doi.org/10.1029/2017JF004358

Author

Sevestre, Heïdi ; Benn, Douglas I. ; Luckman, Adrian ; Nuth, Christopher ; Kohler, Jack ; Lindbäck, Katrin ; Pettersson, Rickard. / Tidewater glacier surges initiated at the terminus. In: Journal of Geophysical Research - Earth Surface. 2018 ; Vol. In press.

Bibtex - Download

@article{4eb24f26fac04d77b48af73c25088566,
title = "Tidewater glacier surges initiated at the terminus",
abstract = "There have been numerous reports that surges of tidewater glaciers in Svalbard were initiated at the terminus and propagated up‐glacier, in contrast with downglacier‐propagating surges of land‐terminating glaciers. Most of these surges were poorly documented, and the cause of this behavior was unknown. We present detailed data on the recent surges of two tidewater glaciers, Aavatsmarkbreen and Wahlenbergbreen in Svalbard. High‐resolution time‐series of glacier velocities and evolution of crevasse patterns show that both surges propagated up‐glacier in abrupt steps. Prior to the surges, both glaciers underwent retreat and steepening, and in the case of Aavatsmarkbreen, we demonstrate that this was accompanied by a large increase in driving stress in the terminal zone. The surges developed in response to two distinct processes. 1) During the late quiescent phase, internal thermodynamic processes and/or retreat from a pinning point caused acceleration of the glacier front, leading to the development of terminal crevasse fields. 2) Crevasses allowed surface melt‐ and rain‐water to access the bed, causing flow acceleration and development of new crevasses up‐glacier. Upward migration of the surge coincided with stepwise expansion of the crevasse field. Geometric changes near the terminus of these glaciers appear to have led to greater strain heating, water production and storage at the glacier bed. Water routing via crevasses likely plays an important role in the evolution of surges. The distinction between internally triggered surges and externally triggered speed‐ups may not be straightforward. The behavior of these glaciers can be understood in terms of the enthalpy cycle model.",
keywords = "Glaciers, Surges, Tidewater, Svalbard, Remote sensing, Dynamics",
author = "He{\"i}di Sevestre and Benn, {Douglas I.} and Adrian Luckman and Christopher Nuth and Jack Kohler and Katrin Lindb{\"a}ck and Rickard Pettersson",
note = "TerraSAR-X data were provided by DLR (project OCE1503), and funded by the Conoco Phillips-Lundin Northern Area Program through the CRIOS project (Calving Rates and Impact on Sea level). C.N. acknowledges funding from European Union/ERC (grant 320816) and ESA (project Glaciers CCI, 4000109873/14/I-NB).",
year = "2018",
month = "4",
day = "26",
doi = "10.1029/2017JF004358",
language = "English",
volume = "In press",
journal = "Journal of Geophysical Research - Earth Surface",
issn = "2169-9011",
publisher = "John Wiley & Sons, Ltd.",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Tidewater glacier surges initiated at the terminus

AU - Sevestre, Heïdi

AU - Benn, Douglas I.

AU - Luckman, Adrian

AU - Nuth, Christopher

AU - Kohler, Jack

AU - Lindbäck, Katrin

AU - Pettersson, Rickard

N1 - TerraSAR-X data were provided by DLR (project OCE1503), and funded by the Conoco Phillips-Lundin Northern Area Program through the CRIOS project (Calving Rates and Impact on Sea level). C.N. acknowledges funding from European Union/ERC (grant 320816) and ESA (project Glaciers CCI, 4000109873/14/I-NB).

PY - 2018/4/26

Y1 - 2018/4/26

N2 - There have been numerous reports that surges of tidewater glaciers in Svalbard were initiated at the terminus and propagated up‐glacier, in contrast with downglacier‐propagating surges of land‐terminating glaciers. Most of these surges were poorly documented, and the cause of this behavior was unknown. We present detailed data on the recent surges of two tidewater glaciers, Aavatsmarkbreen and Wahlenbergbreen in Svalbard. High‐resolution time‐series of glacier velocities and evolution of crevasse patterns show that both surges propagated up‐glacier in abrupt steps. Prior to the surges, both glaciers underwent retreat and steepening, and in the case of Aavatsmarkbreen, we demonstrate that this was accompanied by a large increase in driving stress in the terminal zone. The surges developed in response to two distinct processes. 1) During the late quiescent phase, internal thermodynamic processes and/or retreat from a pinning point caused acceleration of the glacier front, leading to the development of terminal crevasse fields. 2) Crevasses allowed surface melt‐ and rain‐water to access the bed, causing flow acceleration and development of new crevasses up‐glacier. Upward migration of the surge coincided with stepwise expansion of the crevasse field. Geometric changes near the terminus of these glaciers appear to have led to greater strain heating, water production and storage at the glacier bed. Water routing via crevasses likely plays an important role in the evolution of surges. The distinction between internally triggered surges and externally triggered speed‐ups may not be straightforward. The behavior of these glaciers can be understood in terms of the enthalpy cycle model.

AB - There have been numerous reports that surges of tidewater glaciers in Svalbard were initiated at the terminus and propagated up‐glacier, in contrast with downglacier‐propagating surges of land‐terminating glaciers. Most of these surges were poorly documented, and the cause of this behavior was unknown. We present detailed data on the recent surges of two tidewater glaciers, Aavatsmarkbreen and Wahlenbergbreen in Svalbard. High‐resolution time‐series of glacier velocities and evolution of crevasse patterns show that both surges propagated up‐glacier in abrupt steps. Prior to the surges, both glaciers underwent retreat and steepening, and in the case of Aavatsmarkbreen, we demonstrate that this was accompanied by a large increase in driving stress in the terminal zone. The surges developed in response to two distinct processes. 1) During the late quiescent phase, internal thermodynamic processes and/or retreat from a pinning point caused acceleration of the glacier front, leading to the development of terminal crevasse fields. 2) Crevasses allowed surface melt‐ and rain‐water to access the bed, causing flow acceleration and development of new crevasses up‐glacier. Upward migration of the surge coincided with stepwise expansion of the crevasse field. Geometric changes near the terminus of these glaciers appear to have led to greater strain heating, water production and storage at the glacier bed. Water routing via crevasses likely plays an important role in the evolution of surges. The distinction between internally triggered surges and externally triggered speed‐ups may not be straightforward. The behavior of these glaciers can be understood in terms of the enthalpy cycle model.

KW - Glaciers

KW - Surges

KW - Tidewater

KW - Svalbard

KW - Remote sensing

KW - Dynamics

U2 - 10.1029/2017JF004358

DO - 10.1029/2017JF004358

M3 - Article

VL - In press

JO - Journal of Geophysical Research - Earth Surface

T2 - Journal of Geophysical Research - Earth Surface

JF - Journal of Geophysical Research - Earth Surface

SN - 2169-9011

ER -

Related by author

  1. Sensitivity of a calving glacier to ice—ocean interactions under climate change: new insights from a 3-D full-Stokes model

    Todd, J., Christoffersen, P., Zwinger, T., Råback, P. & Benn, D. I., 14 Jun 2019, In : Cryosphere. 13, 6, p. 1681-1694 14 p.

    Research output: Contribution to journalArticle

  2. Automatic detection of calving events from time-lapse imagery at Tunabreen, Svalbard

    Vallot, D., Adinugroho, S., Strand, R., How, P., Pettersson, R., Benn, D. & Hulton, N. R. J., 29 Mar 2019, In : Geoscientific Instrumentation Methods and Data Systems. 8, 1, p. 113-127 15 p.

    Research output: Contribution to journalArticle

  3. Calving controlled by melt-under-cutting: detailed calving styles revealed through time-lapse observations

    How, P., Schild, K. M., Benn, D. I., Noormets, R., Kirchner, N., Luckman, A., Vallot, D., Hulton, N. R. J. & Borstad, C., 30 Jan 2019, In : Annals of Glaciology. First View, 12 p.

    Research output: Contribution to journalArticle

  4. Physical conditions of fast glacier flow: 3. Seasonally-evolving ice deformation on Store Glacier, West Greenland

    Young, T. J., Christoffersen, P., Doyle, S. H., Nicholls, K. W., Stewart, C. L., Hubbard, B., Hubbard, A., Lok, L. B., Brennan, P., Benn, D. I., Luckman, A. & Bougamont, M., Jan 2019, In : Journal of Geophysical Research - Earth Surface. 124, 1, p. 245-267 23 p.

    Research output: Contribution to journalArticle

  5. Multiple Late Holocene surges of a High-Arctic tidewater glacier system in Svalbard

    Lovell, H., Benn, D. I., Lukas, S., Ottesen, D., Luckman, A., Hardiman, M., Barr, L. D., Boston, C. M. & Sevestre, H., 1 Dec 2018, In : Quaternary Science Reviews. 201, p. 162-185 24 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Physical conditions of fast glacier flow: 3. Seasonally-evolving ice deformation on Store Glacier, West Greenland

    Young, T. J., Christoffersen, P., Doyle, S. H., Nicholls, K. W., Stewart, C. L., Hubbard, B., Hubbard, A., Lok, L. B., Brennan, P., Benn, D. I., Luckman, A. & Bougamont, M., Jan 2019, In : Journal of Geophysical Research - Earth Surface. 124, 1, p. 245-267 23 p.

    Research output: Contribution to journalArticle

  2. A full-Stokes 3D calving model applied to a large Greenlandic glacier

    Todd, J., Christoffersen, P., Zwinger, T., Råback, P., Chauché, N., Benn, D., Luckman, A., Ryan, J., Toberg, N., Slater, D. & Hubbard, A., 1 Mar 2018, In : Journal of Geophysical Research - Earth Surface. 123, 3, p. 410-432 23 p.

    Research output: Contribution to journalArticle

  3. Glacier calving rates due to subglacial discharge, fjord circulation, and free convection

    Schild, K. M., Renshaw, C. E., Benn, D. I., Luckman, A., Hawley, R. L., How, P., Trusel, L., Cottier, F. R., Pramanik, A. & Hulton, N. R. J., 15 Sep 2018, In : Journal of Geophysical Research - Earth Surface. Early View, 16 p.

    Research output: Contribution to journalArticle

  4. Ice and firn heterogeneity within Larsen C Ice Shelf from borehole optical televiewing

    Ashmore, D. W., Hubbard, B., Luckman, A., Kulessa, B., Bevan, S., Booth, A., Munneke, P. K., O'Leary, M., Sevestre, H. & Holland, P. R., May 2017, In : Journal of Geophysical Research - Earth Surface. 122, 5, p. 1139-1153 15 p.

    Research output: Contribution to journalArticle

ID: 252944993