Wave Propagation in Continuous Sea Ice: An Experimental Perspective
Ocean waves penetrate hundreds of kilometres into the ice-covered ocean. Waves fracture the level ice into small floes, herd floes, introduce warm water and overwash the floes, accelerating ice melt and causing collisions, which concurrently erodes the floes and influences the large-scale deformatio...
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Online Access: | http://hdl.handle.net/11420/8426 |
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fttuhamburg:oai:tore.tuhh.de:11420/8426 2023-08-20T04:02:43+02:00 Wave Propagation in Continuous Sea Ice: An Experimental Perspective Passerotti, Giulio Alberello, Alberto Dolatshah, Azam Bennetts, Luke Puolakka, Otto von Bock und Polach, Rüdiger Ulrich Franz Klein, Marco Hartmann, Moritz Cornelius Nikolaus Monbaliu, Jaak Toffoli, Alessandro 2020-08 http://hdl.handle.net/11420/8426 en eng 39th International Conference on Ocean, Offshore and Arctic Engineering, ASME 2020 978-0-7918-8439-3 International Conference on Ocean, Offshore and Arctic Engineering (ASME 2020) http://hdl.handle.net/11420/8426 2-s2.0-85099380714 000: Allgemeines Wissenschaft Conference Paper Other 2020 fttuhamburg 2023-07-28T09:23:46Z Ocean waves penetrate hundreds of kilometres into the ice-covered ocean. Waves fracture the level ice into small floes, herd floes, introduce warm water and overwash the floes, accelerating ice melt and causing collisions, which concurrently erodes the floes and influences the large-scale deformation. Concomitantly, interactions between waves and the sea ice cause wave energy to reduce with distance travelled into the ice cover, attenuating wave driven effects. Here a pilot experiment in the ice tank at Aalto University (Finland) is presented to discuss how the properties of irregular small amplitude (linear) waves change as they propagate through continuous model sea ice. Irregular waves with a JONSWAP spectral shape were mechanically generated with a very low initial wave steepness to avoid ice break up and maintain a consistent continuous ice cover throughout the experiments. Observations show an exponential attenuation of wave energy with distance. High frequency components attenuated more rapidly than the low frequency counterparts, in agreement with a frequency-cubed power-law. The more effective attenuation in the high frequency range induced a substantial downshift of the spectral peak, stretching the dominant wave component as it propagates in ice. Conference Object Arctic Sea ice TUHH Open Research (TORE - Technische Universität Hamburg) Volume 7: Polar and Arctic Sciences and Technology |
institution |
Open Polar |
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TUHH Open Research (TORE - Technische Universität Hamburg) |
op_collection_id |
fttuhamburg |
language |
English |
topic |
000: Allgemeines Wissenschaft |
spellingShingle |
000: Allgemeines Wissenschaft Passerotti, Giulio Alberello, Alberto Dolatshah, Azam Bennetts, Luke Puolakka, Otto von Bock und Polach, Rüdiger Ulrich Franz Klein, Marco Hartmann, Moritz Cornelius Nikolaus Monbaliu, Jaak Toffoli, Alessandro Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
topic_facet |
000: Allgemeines Wissenschaft |
description |
Ocean waves penetrate hundreds of kilometres into the ice-covered ocean. Waves fracture the level ice into small floes, herd floes, introduce warm water and overwash the floes, accelerating ice melt and causing collisions, which concurrently erodes the floes and influences the large-scale deformation. Concomitantly, interactions between waves and the sea ice cause wave energy to reduce with distance travelled into the ice cover, attenuating wave driven effects. Here a pilot experiment in the ice tank at Aalto University (Finland) is presented to discuss how the properties of irregular small amplitude (linear) waves change as they propagate through continuous model sea ice. Irregular waves with a JONSWAP spectral shape were mechanically generated with a very low initial wave steepness to avoid ice break up and maintain a consistent continuous ice cover throughout the experiments. Observations show an exponential attenuation of wave energy with distance. High frequency components attenuated more rapidly than the low frequency counterparts, in agreement with a frequency-cubed power-law. The more effective attenuation in the high frequency range induced a substantial downshift of the spectral peak, stretching the dominant wave component as it propagates in ice. |
format |
Conference Object |
author |
Passerotti, Giulio Alberello, Alberto Dolatshah, Azam Bennetts, Luke Puolakka, Otto von Bock und Polach, Rüdiger Ulrich Franz Klein, Marco Hartmann, Moritz Cornelius Nikolaus Monbaliu, Jaak Toffoli, Alessandro |
author_facet |
Passerotti, Giulio Alberello, Alberto Dolatshah, Azam Bennetts, Luke Puolakka, Otto von Bock und Polach, Rüdiger Ulrich Franz Klein, Marco Hartmann, Moritz Cornelius Nikolaus Monbaliu, Jaak Toffoli, Alessandro |
author_sort |
Passerotti, Giulio |
title |
Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
title_short |
Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
title_full |
Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
title_fullStr |
Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
title_full_unstemmed |
Wave Propagation in Continuous Sea Ice: An Experimental Perspective |
title_sort |
wave propagation in continuous sea ice: an experimental perspective |
publishDate |
2020 |
url |
http://hdl.handle.net/11420/8426 |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
39th International Conference on Ocean, Offshore and Arctic Engineering, ASME 2020 978-0-7918-8439-3 International Conference on Ocean, Offshore and Arctic Engineering (ASME 2020) http://hdl.handle.net/11420/8426 2-s2.0-85099380714 |
container_title |
Volume 7: Polar and Arctic Sciences and Technology |
_version_ |
1774713317573525504 |