To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice?
Understanding the causes of recent trends in Antarctic ice shelves and sea ice is crucial for improving our modelling capabilities to predict the future state of the Antarctic Ice Sheet and its future contribution to sea level rise. An overlooked component of this is the direct interaction between i...
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University of Canterbury
2019
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ftunivcanter:oai:ir.canterbury.ac.nz:10092/18560 2023-05-15T13:55:49+02:00 To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? Freer, Bryony 2019 application/msword http://hdl.handle.net/10092/18560 English en eng University of Canterbury http://hdl.handle.net/10092/18560 All Rights Reserved Other 2019 ftunivcanter 2022-09-08T13:29:17Z Understanding the causes of recent trends in Antarctic ice shelves and sea ice is crucial for improving our modelling capabilities to predict the future state of the Antarctic Ice Sheet and its future contribution to sea level rise. An overlooked component of this is the direct interaction between ice shelves and sea ice; two systems which have traditionally been studied rather separately. This report closely examines the literature surrounding this, and suggests that current evidence points to the existence of a tight mechanical coupling, in which the behaviour of both sea-ice and ice-shelves is able to influence the stability of the other. Examples are used to illustrate this interaction, including the recent Larsen A, B and Wilkins Ice Shelf collapses, major calvings from the Erebus Glacier Tongue and Sulzberger Ice Shelf, and sea ice trends in the MIZ at the Ninnis-Mertz glacier system. In particular, sea-ice is shown to be able to dampen certain (but not all) types of ocean waves, reducing their destructive force on ice shelves. Grounded icebergs from ice shelves have also been observed to form centres of extended sea-ice formation. However, current models contain insufficient parameterisation of this coupling, limiting their accuracy, and so further research to understand and quantify its nature and extent for model input is highly recommended. Other/Unknown Material Antarc* Antarctic Erebus Glacier Ice Sheet Ice Shelf Ice Shelves Iceberg* Mertz Glacier Sea ice Sulzberger Ice Shelf Wilkins Ice Shelf University of Canterbury, Christchurch: UC Research Repository Antarctic Erebus Glacier ENVELOPE(167.000,167.000,-77.683,-77.683) Erebus Glacier Tongue ENVELOPE(166.667,166.667,-77.700,-77.700) Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Sulzberger Ice Shelf ENVELOPE(-148.000,-148.000,-77.000,-77.000) The Antarctic Wilkins ENVELOPE(59.326,59.326,-67.248,-67.248) Wilkins Ice Shelf ENVELOPE(-72.500,-72.500,-70.416,-70.416) |
institution |
Open Polar |
collection |
University of Canterbury, Christchurch: UC Research Repository |
op_collection_id |
ftunivcanter |
language |
English |
description |
Understanding the causes of recent trends in Antarctic ice shelves and sea ice is crucial for improving our modelling capabilities to predict the future state of the Antarctic Ice Sheet and its future contribution to sea level rise. An overlooked component of this is the direct interaction between ice shelves and sea ice; two systems which have traditionally been studied rather separately. This report closely examines the literature surrounding this, and suggests that current evidence points to the existence of a tight mechanical coupling, in which the behaviour of both sea-ice and ice-shelves is able to influence the stability of the other. Examples are used to illustrate this interaction, including the recent Larsen A, B and Wilkins Ice Shelf collapses, major calvings from the Erebus Glacier Tongue and Sulzberger Ice Shelf, and sea ice trends in the MIZ at the Ninnis-Mertz glacier system. In particular, sea-ice is shown to be able to dampen certain (but not all) types of ocean waves, reducing their destructive force on ice shelves. Grounded icebergs from ice shelves have also been observed to form centres of extended sea-ice formation. However, current models contain insufficient parameterisation of this coupling, limiting their accuracy, and so further research to understand and quantify its nature and extent for model input is highly recommended. |
format |
Other/Unknown Material |
author |
Freer, Bryony |
spellingShingle |
Freer, Bryony To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
author_facet |
Freer, Bryony |
author_sort |
Freer, Bryony |
title |
To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
title_short |
To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
title_full |
To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
title_fullStr |
To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
title_full_unstemmed |
To what extent is there a mechanical coupling between Antarctic ice-shelves and sea-ice? |
title_sort |
to what extent is there a mechanical coupling between antarctic ice-shelves and sea-ice? |
publisher |
University of Canterbury |
publishDate |
2019 |
url |
http://hdl.handle.net/10092/18560 |
long_lat |
ENVELOPE(167.000,167.000,-77.683,-77.683) ENVELOPE(166.667,166.667,-77.700,-77.700) ENVELOPE(144.500,144.500,-67.667,-67.667) ENVELOPE(-148.000,-148.000,-77.000,-77.000) ENVELOPE(59.326,59.326,-67.248,-67.248) ENVELOPE(-72.500,-72.500,-70.416,-70.416) |
geographic |
Antarctic Erebus Glacier Erebus Glacier Tongue Mertz Glacier Sulzberger Ice Shelf The Antarctic Wilkins Wilkins Ice Shelf |
geographic_facet |
Antarctic Erebus Glacier Erebus Glacier Tongue Mertz Glacier Sulzberger Ice Shelf The Antarctic Wilkins Wilkins Ice Shelf |
genre |
Antarc* Antarctic Erebus Glacier Ice Sheet Ice Shelf Ice Shelves Iceberg* Mertz Glacier Sea ice Sulzberger Ice Shelf Wilkins Ice Shelf |
genre_facet |
Antarc* Antarctic Erebus Glacier Ice Sheet Ice Shelf Ice Shelves Iceberg* Mertz Glacier Sea ice Sulzberger Ice Shelf Wilkins Ice Shelf |
op_relation |
http://hdl.handle.net/10092/18560 |
op_rights |
All Rights Reserved |
_version_ |
1766262676149764096 |