Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley
The continental shelf of the eastern Weddell Sea is known as “iceberg alley”. Icebergs that calve at the coast of East Antarctica drift with the coastal current along the Fimbul Ice Shelf towards the Weddell Sea (Gladstone et al., 2001). In the beginning of 2006, three large icebergs passed the Ekst...
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ftawi:oai:epic.awi.de:34767 2024-09-15T17:41:08+00:00 Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley Wesche, Christine Rackow, Thomas Dierking, Wolfgang 2014 application/pdf https://epic.awi.de/id/eprint/34767/ https://epic.awi.de/id/eprint/34767/1/hobart_cwesche_final.pdf https://hdl.handle.net/10013/epic.42940 https://hdl.handle.net/10013/epic.42940.d001 unknown https://epic.awi.de/id/eprint/34767/1/hobart_cwesche_final.pdf https://hdl.handle.net/10013/epic.42940.d001 Wesche, C. orcid:0000-0002-9786-4010 , Rackow, T. orcid:0000-0002-5468-575X and Dierking, W. orcid:0000-0002-5031-648X (2014) Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley , International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, 10 March 2014 - 14 March 2014 . hdl:10013/epic.42940 EPIC3International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, 2014-03-10-2014-03-14 Conference notRev 2014 ftawi 2024-06-24T04:08:32Z The continental shelf of the eastern Weddell Sea is known as “iceberg alley”. Icebergs that calve at the coast of East Antarctica drift with the coastal current along the Fimbul Ice Shelf towards the Weddell Sea (Gladstone et al., 2001). In the beginning of 2006, three large icebergs passed the Ekström Ice Shelf close to the sea ice edge. Using a series of ENVISAT Wide Swath images, they were monitored for nearly one year to investigate the influence of wind, ocean currents, sea ice and the iceberg draft on their drift patterns and to validate corresponding model simulations. The iceberg drift model is driven by the Finite-Elements Sea-ice Ocean Model (FESOM, Timmermann et al., 2009). It was run with a temporal resolution of 6 hours and a spatial resolution of 10 km close to the coast and 30 km further offshore. Besides comparison between iceberg drift observations and computer simulations for improving the model, the observation of icebergs in this region is of great importance for the logistic department at Alfred Wegener Institute because of the supply of the German overwintering station Neumayer III. The drift of the three icebergs is modeled with different input configurations and parameters. Events with large differences between the modeled and the observed positions are investigated in detail. The goal of this study is to improve the accuracy of the iceberg drift model in the region of the Weddell Sea “drift alley” and thus to be able to forecast iceberg positions as support for marine traffic in this region. References: Gladstone, R. M.; Bigg, G. R. & Nicholls, K. W. (2001), Iceberg trajectory modeling and melt water injection in the Southern Ocean, Journal of Geophysical Research, 106(C9), 19903-19915 Timmermann, R.; Danilov, S.; Schröter, J.; Böning, C.; Sidorenko, D. & Rollenhagen, K. (2009), Ocean circulation and sea ice distribution in a finite element global sea ice-ocean model, Ocean Modelling, 27(3-4), 114-129 Conference Object Antarc* Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Sea ice Southern Ocean Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The continental shelf of the eastern Weddell Sea is known as “iceberg alley”. Icebergs that calve at the coast of East Antarctica drift with the coastal current along the Fimbul Ice Shelf towards the Weddell Sea (Gladstone et al., 2001). In the beginning of 2006, three large icebergs passed the Ekström Ice Shelf close to the sea ice edge. Using a series of ENVISAT Wide Swath images, they were monitored for nearly one year to investigate the influence of wind, ocean currents, sea ice and the iceberg draft on their drift patterns and to validate corresponding model simulations. The iceberg drift model is driven by the Finite-Elements Sea-ice Ocean Model (FESOM, Timmermann et al., 2009). It was run with a temporal resolution of 6 hours and a spatial resolution of 10 km close to the coast and 30 km further offshore. Besides comparison between iceberg drift observations and computer simulations for improving the model, the observation of icebergs in this region is of great importance for the logistic department at Alfred Wegener Institute because of the supply of the German overwintering station Neumayer III. The drift of the three icebergs is modeled with different input configurations and parameters. Events with large differences between the modeled and the observed positions are investigated in detail. The goal of this study is to improve the accuracy of the iceberg drift model in the region of the Weddell Sea “drift alley” and thus to be able to forecast iceberg positions as support for marine traffic in this region. References: Gladstone, R. M.; Bigg, G. R. & Nicholls, K. W. (2001), Iceberg trajectory modeling and melt water injection in the Southern Ocean, Journal of Geophysical Research, 106(C9), 19903-19915 Timmermann, R.; Danilov, S.; Schröter, J.; Böning, C.; Sidorenko, D. & Rollenhagen, K. (2009), Ocean circulation and sea ice distribution in a finite element global sea ice-ocean model, Ocean Modelling, 27(3-4), 114-129 |
format |
Conference Object |
author |
Wesche, Christine Rackow, Thomas Dierking, Wolfgang |
spellingShingle |
Wesche, Christine Rackow, Thomas Dierking, Wolfgang Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
author_facet |
Wesche, Christine Rackow, Thomas Dierking, Wolfgang |
author_sort |
Wesche, Christine |
title |
Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
title_short |
Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
title_full |
Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
title_fullStr |
Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
title_full_unstemmed |
Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley |
title_sort |
observation and modeling the iceberg drift in the eastern weddell sea iceberg alley |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/34767/ https://epic.awi.de/id/eprint/34767/1/hobart_cwesche_final.pdf https://hdl.handle.net/10013/epic.42940 https://hdl.handle.net/10013/epic.42940.d001 |
genre |
Antarc* Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctica East Antarctica Fimbul Ice Shelf Ice Shelf Sea ice Southern Ocean Weddell Sea |
op_source |
EPIC3International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, 2014-03-10-2014-03-14 |
op_relation |
https://epic.awi.de/id/eprint/34767/1/hobart_cwesche_final.pdf https://hdl.handle.net/10013/epic.42940.d001 Wesche, C. orcid:0000-0002-9786-4010 , Rackow, T. orcid:0000-0002-5468-575X and Dierking, W. orcid:0000-0002-5031-648X (2014) Observation and modeling the iceberg drift in the eastern Weddell Sea iceberg alley , International Symposium on Sea Ice in a Changing Environment, Hobart, Australia, 10 March 2014 - 14 March 2014 . hdl:10013/epic.42940 |
_version_ |
1810487243705417728 |