Massive subsurface ice formed by refreezing of ice-shelf melt ponds

Bryn Hubbard; Adrian Luckman; David W. Ashmore; Suzanne Bevan; Bernd Kulessa; Peter Kuipers Munneke; Morgane Philippe; Daniela Jansen; Adam Booth; Heidi Sevestre; Jean-Louis Tison; Martin O’Leary; Ian Rutt

doi:10.1038/ncomms11897

Massive subsurface ice formed by refreezing of ice-shelf melt ponds

Bryn Hubbard, Adrian Luckman, David W. Ashmore, Suzanne Bevan, Bernd Kulessa, Peter Kuipers Munneke, Morgane Philippe, Daniela Jansen, Adam Booth, Heidi Sevestre, Jean-Louis Tison, Martin O’Leary, Ian Rutt

Adran Daearyddiaeth a Gwyddorau Daear

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

70 Dyfyniadau (Scopus)

144 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicated in ice-shelf break up, the consequences of such ponding for ice formation and ice-shelf structure have not been evaluated. Here we report the discovery of a massive subsurface ice layer, at least 16 km across, several kilometres long and tens of metres deep, located in an area of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. We combine borehole optical televiewer logging and radar measurements with remote sensing and firn modelling to investigate the layer, found to be ~10 °C warmer and ~170 kg m−3 denser than anticipated in the absence of ponding and hitherto used in models of ice-shelf fracture and flow. Surface ponding and ice layers such as the one we report are likely to form on a wider range of Antarctic ice shelves in response to climatic warming in forthcoming decades.

Iaith wreiddiol	Saesneg
Rhif yr erthygl	11897
Nifer y tudalennau	6
Cyfnodolyn	Nature Communications
Cyfrol	7
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.1038/ncomms11897
Statws	Cyhoeddwyd - 10 Meh 2016

Mynediad at Ddogfen

10.1038/ncomms11897Trwydded: CC BY

ArticleFersiwn derfynol wedi’i chyhoeddi, 1.65 MBTrwydded: CC BY

Cysylltiad parhaol

Dolen barhaus

Ffeiliau eraill a chysylltiadau

Bryn Hubbard
- byhaber.acuk
- Adran Daearyddiaeth a Gwyddorau Daear - Professor
Unigolyn: Dysgu ac Ymchwil

Supporting Information for "Massive subsurface ice formed by refreezing of ice-shelf melt ponds"
Hubbard, B., Luckman, A. J., Ashmore, D., Bevan, S., Kulessa, B., Kuipers Munneke, P., Philippe, M., Jansen, D., Booth, A. P., Sevestre, H., Tison, J.-L., O'Leary, M. & Rutt, I., Prifysgol Aberystwyth | Aberystwyth University, 10 Mai 2016
Dangosydd eitem ddigidol (DOI): 10.20391/f8b0ec24-5cce-4389-aa3f-6b8529b8543e, http://www.projectmidas.org/data/hubbard2016/
Set ddata

Ffeil

1 Wedi Gorffen

MIDAS: Impact of surafec melt and ponding on ice shelf dynamics and stability
Hubbard, B. (Prif Ymchwilydd), Luckman, A. J. (Prif Ymchwilydd) & Kulessa, B. (Cyd-ymchwilydd)
Natural Environment Research Council
07 Ebr 2014 → 06 Ebr 2017
Prosiect: Ymchwil a ariannwyd yn allanol

Dyfynnu hyn

@article{86558666bb284514870136adf0713e74,

title = "Massive subsurface ice formed by refreezing of ice-shelf melt ponds",

abstract = "Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicated in ice-shelf break up, the consequences of such ponding for ice formation and ice-shelf structure have not been evaluated. Here we report the discovery of a massive subsurface ice layer, at least 16 km across, several kilometres long and tens of metres deep, located in an area of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. We combine borehole optical televiewer logging and radar measurements with remote sensing and firn modelling to investigate the layer, found to be ~10 °C warmer and ~170 kg m−3 denser than anticipated in the absence of ponding and hitherto used in models of ice-shelf fracture and flow. Surface ponding and ice layers such as the one we report are likely to form on a wider range of Antarctic ice shelves in response to climatic warming in forthcoming decades.",

author = "Bryn Hubbard and Adrian Luckman and Ashmore, {David W.} and Suzanne Bevan and Bernd Kulessa and {Kuipers Munneke}, Peter and Morgane Philippe and Daniela Jansen and Adam Booth and Heidi Sevestre and Jean-Louis Tison and Martin O{\textquoteright}Leary and Ian Rutt",

note = "Funding Information: This research was funded by the Natural Environment Research Council, grants NE/L005409/1 and NE/L006707/1, and Aberystwyth University's Capital Equipment fund. The Leica VIVA GS10 GNSS system and Sensors and Software Pulse Ekko Pro radar transmitter were loaned by the Natural Environment Research Council Geophysical Equipment Facility, loan number 1028. We thank the British Antarctic Survey for logistical support, and in particular the project's field assistants Ashly Fusiarski and Nicholas Gillett.",

year = "2016",

month = jun,

day = "10",

doi = "10.1038/ncomms11897",

language = "English",

volume = "7",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Springer Nature",

}

TY - JOUR

T1 - Massive subsurface ice formed by refreezing of ice-shelf melt ponds

AU - Hubbard, Bryn

AU - Luckman, Adrian

AU - Ashmore, David W.

AU - Bevan, Suzanne

AU - Kulessa, Bernd

AU - Kuipers Munneke, Peter

AU - Philippe, Morgane

AU - Jansen, Daniela

AU - Booth, Adam

AU - Sevestre, Heidi

AU - Tison, Jean-Louis

AU - O’Leary, Martin

AU - Rutt, Ian

N1 - Funding Information: This research was funded by the Natural Environment Research Council, grants NE/L005409/1 and NE/L006707/1, and Aberystwyth University's Capital Equipment fund. The Leica VIVA GS10 GNSS system and Sensors and Software Pulse Ekko Pro radar transmitter were loaned by the Natural Environment Research Council Geophysical Equipment Facility, loan number 1028. We thank the British Antarctic Survey for logistical support, and in particular the project's field assistants Ashly Fusiarski and Nicholas Gillett.

PY - 2016/6/10

Y1 - 2016/6/10

N2 - Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicated in ice-shelf break up, the consequences of such ponding for ice formation and ice-shelf structure have not been evaluated. Here we report the discovery of a massive subsurface ice layer, at least 16 km across, several kilometres long and tens of metres deep, located in an area of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. We combine borehole optical televiewer logging and radar measurements with remote sensing and firn modelling to investigate the layer, found to be ~10 °C warmer and ~170 kg m−3 denser than anticipated in the absence of ponding and hitherto used in models of ice-shelf fracture and flow. Surface ponding and ice layers such as the one we report are likely to form on a wider range of Antarctic ice shelves in response to climatic warming in forthcoming decades.

AB - Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicated in ice-shelf break up, the consequences of such ponding for ice formation and ice-shelf structure have not been evaluated. Here we report the discovery of a massive subsurface ice layer, at least 16 km across, several kilometres long and tens of metres deep, located in an area of intense melting and intermittent ponding on Larsen C Ice Shelf, Antarctica. We combine borehole optical televiewer logging and radar measurements with remote sensing and firn modelling to investigate the layer, found to be ~10 °C warmer and ~170 kg m−3 denser than anticipated in the absence of ponding and hitherto used in models of ice-shelf fracture and flow. Surface ponding and ice layers such as the one we report are likely to form on a wider range of Antarctic ice shelves in response to climatic warming in forthcoming decades.

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U2 - 10.1038/ncomms11897

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SN - 2041-1723

VL - 7

JO - Nature Communications

JF - Nature Communications

M1 - 11897

ER -

Massive subsurface ice formed by refreezing of ice-shelf melt ponds

Crynodeb

Mynediad at Ddogfen

Cysylltiad parhaol

Ffeiliau eraill a chysylltiadau

Ôl bys

Proffiliau

Bryn Hubbard

Setiau Data

Supporting Information for "Massive subsurface ice formed by refreezing of ice-shelf melt ponds"

Prosiectau

MIDAS: Impact of surafec melt and ponding on ice shelf dynamics and stability

Dyfynnu hyn