Local climatology of fast ice in McMurdo Sound, Antarctica
Abstract Fast ice plays important physical and ecological roles: as a barrier to wind, waves and radiation, as both barrier and safe resting place for air-breathing animals, and as substrate for microbial communities. While sea ice has been monitored for decades using satellite imagery, high-resolut...
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Online Access: | http://dx.doi.org/10.1017/s0954102017000578 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000578 |
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crcambridgeupr:10.1017/s0954102017000578 2024-09-15T17:45:31+00:00 Local climatology of fast ice in McMurdo Sound, Antarctica Kim, Stacy Saenz, Ben Scanniello, Jeff Daly, Kendra Ainley, David 2018 http://dx.doi.org/10.1017/s0954102017000578 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000578 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 30, issue 2, page 125-142 ISSN 0954-1020 1365-2079 journal-article 2018 crcambridgeupr https://doi.org/10.1017/s0954102017000578 2024-08-07T04:03:38Z Abstract Fast ice plays important physical and ecological roles: as a barrier to wind, waves and radiation, as both barrier and safe resting place for air-breathing animals, and as substrate for microbial communities. While sea ice has been monitored for decades using satellite imagery, high-resolution imagery sufficient to distinguish fast ice from mobile pack ice extends only back to c. 2000. Fast ice trends may differ from previously identified changes in regional sea ice distributions. To investigate effects of climate and human activities on fast ice dynamics in McMurdo Sound, Ross Sea, the sea and fast ice seasonal events (1978–2015), ice thicknesses and temperatures (1986–2014), wind velocities (1973–2015) and dates that an icebreaker annually opens a channel to McMurdo Station (1956–2015) are reported. A significant relationship exists between sea ice concentration and fast ice extent in the Sound. While fast/sea ice retreat dates have not changed, fast/sea ice reaches a minimum later and begins to advance earlier, in partial agreement with changes in Ross Sea regional pack ice dynamics. Fast ice minimum extent within McMurdo Sound is significantly correlated with icebreaker arrival date as well as wind velocity. The potential impacts of changes in fast ice climatology on the local marine ecosystem are discussed. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica McMurdo Sound Ross Sea Sea ice Cambridge University Press Antarctic Science 30 2 125 142 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Fast ice plays important physical and ecological roles: as a barrier to wind, waves and radiation, as both barrier and safe resting place for air-breathing animals, and as substrate for microbial communities. While sea ice has been monitored for decades using satellite imagery, high-resolution imagery sufficient to distinguish fast ice from mobile pack ice extends only back to c. 2000. Fast ice trends may differ from previously identified changes in regional sea ice distributions. To investigate effects of climate and human activities on fast ice dynamics in McMurdo Sound, Ross Sea, the sea and fast ice seasonal events (1978–2015), ice thicknesses and temperatures (1986–2014), wind velocities (1973–2015) and dates that an icebreaker annually opens a channel to McMurdo Station (1956–2015) are reported. A significant relationship exists between sea ice concentration and fast ice extent in the Sound. While fast/sea ice retreat dates have not changed, fast/sea ice reaches a minimum later and begins to advance earlier, in partial agreement with changes in Ross Sea regional pack ice dynamics. Fast ice minimum extent within McMurdo Sound is significantly correlated with icebreaker arrival date as well as wind velocity. The potential impacts of changes in fast ice climatology on the local marine ecosystem are discussed. |
format |
Article in Journal/Newspaper |
author |
Kim, Stacy Saenz, Ben Scanniello, Jeff Daly, Kendra Ainley, David |
spellingShingle |
Kim, Stacy Saenz, Ben Scanniello, Jeff Daly, Kendra Ainley, David Local climatology of fast ice in McMurdo Sound, Antarctica |
author_facet |
Kim, Stacy Saenz, Ben Scanniello, Jeff Daly, Kendra Ainley, David |
author_sort |
Kim, Stacy |
title |
Local climatology of fast ice in McMurdo Sound, Antarctica |
title_short |
Local climatology of fast ice in McMurdo Sound, Antarctica |
title_full |
Local climatology of fast ice in McMurdo Sound, Antarctica |
title_fullStr |
Local climatology of fast ice in McMurdo Sound, Antarctica |
title_full_unstemmed |
Local climatology of fast ice in McMurdo Sound, Antarctica |
title_sort |
local climatology of fast ice in mcmurdo sound, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/s0954102017000578 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000578 |
genre |
Antarc* Antarctic Science Antarctica McMurdo Sound Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Science Antarctica McMurdo Sound Ross Sea Sea ice |
op_source |
Antarctic Science volume 30, issue 2, page 125-142 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102017000578 |
container_title |
Antarctic Science |
container_volume |
30 |
container_issue |
2 |
container_start_page |
125 |
op_container_end_page |
142 |
_version_ |
1810493392746971136 |