Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard
We describe the annual pattern of frontal ablation driven by submarine melting mechanisms at the Hansbreen terminus: these are reflected in the intensity and spatial distribution of calving events. Analysis of time-lapse images of the Hansbreen front in conjunction with oceanographic and meteorologi...
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ftdoajarticles:oai:doaj.org/article:04c8020af800433da79705bc3e880909 2023-10-29T02:34:28+01:00 Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard Michał Ciepły Dariusz Ignatiuk Mateusz Moskalik Jacek Jania Bartłomiej Luks Oskar Głowacki Kacper Wojtysiak https://doi.org/10.1017/jog.2023.69 https://doaj.org/article/04c8020af800433da79705bc3e880909 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143023000692/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2023.69 0022-1430 1727-5652 https://doaj.org/article/04c8020af800433da79705bc3e880909 Journal of Glaciology, Pp 1-14 Arctic glaciology atmosphere/ice/ocean interactions calving Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article ftdoajarticles https://doi.org/10.1017/jog.2023.69 2023-10-01T00:40:46Z We describe the annual pattern of frontal ablation driven by submarine melting mechanisms at the Hansbreen terminus: these are reflected in the intensity and spatial distribution of calving events. Analysis of time-lapse images of the Hansbreen front in conjunction with oceanographic and meteorological data shows that calving intensity is driven primarily by seawater temperature. Regression analysis also highlights the importance of air temperature, which we take to be a proxy for surface ablation and subglacial discharge. This, combined with seasonal changes in ice cliff tortuosity and the increasing significance of wave motion outside the ablation season, enabled us to determine seasonal changes in the mechanisms of ice cliff undercutting by submarine melting. While submarine melting controlled by estuarine circulation primarily drives frontal ablation in summer, wave-driven melting at the waterline is more important outside the ablation season. During winter, ice cliff undercutting by melting is suspended by low seawater temperature, negligible subglacial water discharge and sea-ice cover. The most intense frontal ablation, recorded in summer, was related to higher sea temperature and vigorous estuarine circulation. Article in Journal/Newspaper Arctic Journal of Glaciology Sea ice Svalbard Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 1 14 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic glaciology atmosphere/ice/ocean interactions calving Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic glaciology atmosphere/ice/ocean interactions calving Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Michał Ciepły Dariusz Ignatiuk Mateusz Moskalik Jacek Jania Bartłomiej Luks Oskar Głowacki Kacper Wojtysiak Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
topic_facet |
Arctic glaciology atmosphere/ice/ocean interactions calving Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
We describe the annual pattern of frontal ablation driven by submarine melting mechanisms at the Hansbreen terminus: these are reflected in the intensity and spatial distribution of calving events. Analysis of time-lapse images of the Hansbreen front in conjunction with oceanographic and meteorological data shows that calving intensity is driven primarily by seawater temperature. Regression analysis also highlights the importance of air temperature, which we take to be a proxy for surface ablation and subglacial discharge. This, combined with seasonal changes in ice cliff tortuosity and the increasing significance of wave motion outside the ablation season, enabled us to determine seasonal changes in the mechanisms of ice cliff undercutting by submarine melting. While submarine melting controlled by estuarine circulation primarily drives frontal ablation in summer, wave-driven melting at the waterline is more important outside the ablation season. During winter, ice cliff undercutting by melting is suspended by low seawater temperature, negligible subglacial water discharge and sea-ice cover. The most intense frontal ablation, recorded in summer, was related to higher sea temperature and vigorous estuarine circulation. |
format |
Article in Journal/Newspaper |
author |
Michał Ciepły Dariusz Ignatiuk Mateusz Moskalik Jacek Jania Bartłomiej Luks Oskar Głowacki Kacper Wojtysiak |
author_facet |
Michał Ciepły Dariusz Ignatiuk Mateusz Moskalik Jacek Jania Bartłomiej Luks Oskar Głowacki Kacper Wojtysiak |
author_sort |
Michał Ciepły |
title |
Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
title_short |
Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
title_full |
Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
title_fullStr |
Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
title_full_unstemmed |
Seasonal changes in submarine melting mechanisms controlling frontal ablation of Hansbreen, Svalbard |
title_sort |
seasonal changes in submarine melting mechanisms controlling frontal ablation of hansbreen, svalbard |
publisher |
Cambridge University Press |
url |
https://doi.org/10.1017/jog.2023.69 https://doaj.org/article/04c8020af800433da79705bc3e880909 |
genre |
Arctic Journal of Glaciology Sea ice Svalbard |
genre_facet |
Arctic Journal of Glaciology Sea ice Svalbard |
op_source |
Journal of Glaciology, Pp 1-14 |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143023000692/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2023.69 0022-1430 1727-5652 https://doaj.org/article/04c8020af800433da79705bc3e880909 |
op_doi |
https://doi.org/10.1017/jog.2023.69 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
14 |
_version_ |
1781057091195109376 |