Experimental study of internal solitary wave evolution beneath an ice keel model
Internal solitary waves (ISWs) propagating in polar seas are affected by the sea ice at upper boundary of seas and thus exhibit complex evolution characteristics. Herein, spatiotemporal changes in the wave element, flow field, and energy of ISWs beneath an ice keel model were investigated to examine...
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2024
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Online Access: | http://dx.doi.org/10.3389/fmars.2024.1401646 https://www.frontiersin.org/articles/10.3389/fmars.2024.1401646/full |
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crfrontiers:10.3389/fmars.2024.1401646 2024-06-23T07:56:42+00:00 Experimental study of internal solitary wave evolution beneath an ice keel model Wang, Guanjing Du, Hui Fei, Jianfang Wang, Shaodong Xuan, Pu Guo, Hailong Xu, Junnan Gu, Zhiyuan 2024 http://dx.doi.org/10.3389/fmars.2024.1401646 https://www.frontiersin.org/articles/10.3389/fmars.2024.1401646/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 11 ISSN 2296-7745 journal-article 2024 crfrontiers https://doi.org/10.3389/fmars.2024.1401646 2024-06-11T04:09:40Z Internal solitary waves (ISWs) propagating in polar seas are affected by the sea ice at upper boundary of seas and thus exhibit complex evolution characteristics. Herein, spatiotemporal changes in the wave element, flow field, and energy of ISWs beneath an ice keel model were investigated to examine the evolution of ISWs. For this purpose, laboratory experiments were conducted using dye-tracing labeling, conductivity probes, Schlieren technology, and particle image velocimetry. The results show that ice keel causes an increase in the thickness of the pycnocline and even the occurrence of breaking and internal surging of ISW. Additionally, the waveform becomes narrower or wider at different positions, and wave amplitude and speed decrease, with a maximum reduction 30%–40%. Furthermore, the ice keel strengthens the shear of the ISW-induced flow field, generating vortices and mixing. The energy of ISWs undergoes internal conversion majorly at the front slope of the ice keel, while energy dissipation occurs largely at the back slope, with dissipation rates as high as 60%. Article in Journal/Newspaper Sea ice Frontiers (Publisher) Frontiers in Marine Science 11 |
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Frontiers (Publisher) |
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description |
Internal solitary waves (ISWs) propagating in polar seas are affected by the sea ice at upper boundary of seas and thus exhibit complex evolution characteristics. Herein, spatiotemporal changes in the wave element, flow field, and energy of ISWs beneath an ice keel model were investigated to examine the evolution of ISWs. For this purpose, laboratory experiments were conducted using dye-tracing labeling, conductivity probes, Schlieren technology, and particle image velocimetry. The results show that ice keel causes an increase in the thickness of the pycnocline and even the occurrence of breaking and internal surging of ISW. Additionally, the waveform becomes narrower or wider at different positions, and wave amplitude and speed decrease, with a maximum reduction 30%–40%. Furthermore, the ice keel strengthens the shear of the ISW-induced flow field, generating vortices and mixing. The energy of ISWs undergoes internal conversion majorly at the front slope of the ice keel, while energy dissipation occurs largely at the back slope, with dissipation rates as high as 60%. |
format |
Article in Journal/Newspaper |
author |
Wang, Guanjing Du, Hui Fei, Jianfang Wang, Shaodong Xuan, Pu Guo, Hailong Xu, Junnan Gu, Zhiyuan |
spellingShingle |
Wang, Guanjing Du, Hui Fei, Jianfang Wang, Shaodong Xuan, Pu Guo, Hailong Xu, Junnan Gu, Zhiyuan Experimental study of internal solitary wave evolution beneath an ice keel model |
author_facet |
Wang, Guanjing Du, Hui Fei, Jianfang Wang, Shaodong Xuan, Pu Guo, Hailong Xu, Junnan Gu, Zhiyuan |
author_sort |
Wang, Guanjing |
title |
Experimental study of internal solitary wave evolution beneath an ice keel model |
title_short |
Experimental study of internal solitary wave evolution beneath an ice keel model |
title_full |
Experimental study of internal solitary wave evolution beneath an ice keel model |
title_fullStr |
Experimental study of internal solitary wave evolution beneath an ice keel model |
title_full_unstemmed |
Experimental study of internal solitary wave evolution beneath an ice keel model |
title_sort |
experimental study of internal solitary wave evolution beneath an ice keel model |
publisher |
Frontiers Media SA |
publishDate |
2024 |
url |
http://dx.doi.org/10.3389/fmars.2024.1401646 https://www.frontiersin.org/articles/10.3389/fmars.2024.1401646/full |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Frontiers in Marine Science volume 11 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2024.1401646 |
container_title |
Frontiers in Marine Science |
container_volume |
11 |
_version_ |
1802650001475633152 |