Experiments and new observation techniques related to wave-ice interactions
The polar oceans consist of open water, continuous ice covers and zones of broken ice floes of various sizes in the transition between water and ice. As the waves from the open ocean travel into the zone of ice floes, the wave height is efficiently damped. In this work, I have investigated mechanism...
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Language: | English |
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ftoslouniv:oai:www.duo.uio.no:10852/89067 2023-05-15T14:27:56+02:00 Experiments and new observation techniques related to wave-ice interactions Løken, Trygve Kvåle 2021 http://hdl.handle.net/10852/89067 http://urn.nb.no/URN:NBN:no-91680 en eng Paper I: Løken, T.K., Rabault, J., Jensen, A., Sutherland, G., Christensen, K.H., and Müller, M., 2021 “Wave measurements from ship mounted sensors in the Arctic marginal ice zone”. In: Cold Regions Science and Technology. Vol. 182, DOI:10.1016/j.coldregions.2020.103207. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.coldregions.2020.103207 Paper II: Løken, T.K., Rabault, J., Thomas, E.E., Müller, M., Christensen, K.H., Sutherland, G., and Jensen, A., 2020 “A comparison of wave observations in the Arctic marginal ice zone with spectral models”. In: Proceedings of the 25th IAHR International Symposium on Ice. pp. 499–508. The article is included in the thesis. Paper III: Løken, T.K., Ellevold, T.J., Ramirez de la Torre, R.G., Rabault, J., and Jensen, A., 2021 “Bringing optical fluid motion analysis to the field: a methodology using an open source ROV as camera system and rising bubbles as tracers”. In: Measurement Science and Technology. Vol. 32, Number 9, DOI:10.1088/1361-6501/abf09d. The article is included in the thesis. Also available at: https://doi.org/10.1088/1361-6501/abf09d Paper IV: Løken, T.K., Marchenko, A., Gundersen, O., Rabault, J., and Jensen, A., 2021 “Iceberg stability during towing in a wave field”. In: Proceedings of the 26th International Conference on Port and Ocean Engineering under Arctic Conditions. The article is included in the thesis. Paper V: Løken, T.K., Jensen, A., and Rabault, J., 2021 “Grid turbulence measurements with an acoustic Doppler current profiler”. Unpublished manuscript. To be published. The paper is not available in DUO awaiting publishing. Paper VI: Løken, T.K., Marchenko, A., Ellevold, T.J., Rabault, J., and Jensen, A., 2021 “Turbulent kinetic energy dissipation from colliding ice floes”. To be submitted to: Journal of Fluid Mechanics. To be published. The paper is not available in DUO awaiting publishing. https://doi.org/10.1016/j.coldregions.2020.103207 https://doi.org/10.1088/1361-6501/abf09d http://urn.nb.no/URN:NBN:no-91680 http://hdl.handle.net/10852/89067 URN:NBN:no-91680 Fulltext https://www.duo.uio.no/bitstream/handle/10852/89067/1/PhD-Loeken-2021.pdf Doctoral thesis Doktoravhandling 2021 ftoslouniv https://doi.org/10.1016/j.coldregions.2020.103207 https://doi.org/10.1088/1361-6501/abf09d 2021-11-03T23:32:52Z The polar oceans consist of open water, continuous ice covers and zones of broken ice floes of various sizes in the transition between water and ice. As the waves from the open ocean travel into the zone of ice floes, the wave height is efficiently damped. In this work, I have investigated mechanisms of energy dissipation that occur when waves are propagating through sea ice. It is important to gain knowledge about these processes because we may use this information to better predict the short term sea state and wave height and the long term climate in the polar regions. Reliable wave forecast models in the vicinity of sea ice are necessary to ensure safe human activities in the polar oceans. It is challenging to perform fieldwork on the sea ice due to the harsh conditions and the remoteness of the polar areas. Consequently, relatively few field studies on waves in ice are available. Therefore, my research group have developed new measurement techniques for direct observations of wave attenuation through sea ice. We have used these methods to show that a large portion of the wave energy is transformed into ocean turbulence in the interaction with sea ice. Doctoral or Postdoctoral Thesis Arctic Sea ice Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Cold Regions Science and Technology 182 103207 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
The polar oceans consist of open water, continuous ice covers and zones of broken ice floes of various sizes in the transition between water and ice. As the waves from the open ocean travel into the zone of ice floes, the wave height is efficiently damped. In this work, I have investigated mechanisms of energy dissipation that occur when waves are propagating through sea ice. It is important to gain knowledge about these processes because we may use this information to better predict the short term sea state and wave height and the long term climate in the polar regions. Reliable wave forecast models in the vicinity of sea ice are necessary to ensure safe human activities in the polar oceans. It is challenging to perform fieldwork on the sea ice due to the harsh conditions and the remoteness of the polar areas. Consequently, relatively few field studies on waves in ice are available. Therefore, my research group have developed new measurement techniques for direct observations of wave attenuation through sea ice. We have used these methods to show that a large portion of the wave energy is transformed into ocean turbulence in the interaction with sea ice. |
format |
Doctoral or Postdoctoral Thesis |
author |
Løken, Trygve Kvåle |
spellingShingle |
Løken, Trygve Kvåle Experiments and new observation techniques related to wave-ice interactions |
author_facet |
Løken, Trygve Kvåle |
author_sort |
Løken, Trygve Kvåle |
title |
Experiments and new observation techniques related to wave-ice interactions |
title_short |
Experiments and new observation techniques related to wave-ice interactions |
title_full |
Experiments and new observation techniques related to wave-ice interactions |
title_fullStr |
Experiments and new observation techniques related to wave-ice interactions |
title_full_unstemmed |
Experiments and new observation techniques related to wave-ice interactions |
title_sort |
experiments and new observation techniques related to wave-ice interactions |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/89067 http://urn.nb.no/URN:NBN:no-91680 |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
Paper I: Løken, T.K., Rabault, J., Jensen, A., Sutherland, G., Christensen, K.H., and Müller, M., 2021 “Wave measurements from ship mounted sensors in the Arctic marginal ice zone”. In: Cold Regions Science and Technology. Vol. 182, DOI:10.1016/j.coldregions.2020.103207. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.coldregions.2020.103207 Paper II: Løken, T.K., Rabault, J., Thomas, E.E., Müller, M., Christensen, K.H., Sutherland, G., and Jensen, A., 2020 “A comparison of wave observations in the Arctic marginal ice zone with spectral models”. In: Proceedings of the 25th IAHR International Symposium on Ice. pp. 499–508. The article is included in the thesis. Paper III: Løken, T.K., Ellevold, T.J., Ramirez de la Torre, R.G., Rabault, J., and Jensen, A., 2021 “Bringing optical fluid motion analysis to the field: a methodology using an open source ROV as camera system and rising bubbles as tracers”. In: Measurement Science and Technology. Vol. 32, Number 9, DOI:10.1088/1361-6501/abf09d. The article is included in the thesis. Also available at: https://doi.org/10.1088/1361-6501/abf09d Paper IV: Løken, T.K., Marchenko, A., Gundersen, O., Rabault, J., and Jensen, A., 2021 “Iceberg stability during towing in a wave field”. In: Proceedings of the 26th International Conference on Port and Ocean Engineering under Arctic Conditions. The article is included in the thesis. Paper V: Løken, T.K., Jensen, A., and Rabault, J., 2021 “Grid turbulence measurements with an acoustic Doppler current profiler”. Unpublished manuscript. To be published. The paper is not available in DUO awaiting publishing. Paper VI: Løken, T.K., Marchenko, A., Ellevold, T.J., Rabault, J., and Jensen, A., 2021 “Turbulent kinetic energy dissipation from colliding ice floes”. To be submitted to: Journal of Fluid Mechanics. To be published. The paper is not available in DUO awaiting publishing. https://doi.org/10.1016/j.coldregions.2020.103207 https://doi.org/10.1088/1361-6501/abf09d http://urn.nb.no/URN:NBN:no-91680 http://hdl.handle.net/10852/89067 URN:NBN:no-91680 Fulltext https://www.duo.uio.no/bitstream/handle/10852/89067/1/PhD-Loeken-2021.pdf |
op_doi |
https://doi.org/10.1016/j.coldregions.2020.103207 https://doi.org/10.1088/1361-6501/abf09d |
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Cold Regions Science and Technology |
container_volume |
182 |
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103207 |
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