Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation
Air bubble penetration depths are investigated with a bottom‐mounted echosounder at a seabed observatory in northern Norway. We compare a 1‐year time series of observed bubble depth against modeled and estimated turbulent kinetic energy flux from breaking waves as well as wind speed and sea state. W...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://hdl.handle.net/11250/2678637 https://doi.org/10.1029/2019JC015906 |
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ftnorce:oai:norceresearch.brage.unit.no:11250/2678637 2023-05-15T17:43:27+02:00 Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation Strand, Kjersti Opstad Breivik, Øyvind Pedersen, Geir Vikebø, Frode Bendiksen Sundby, Svein Christensen, Kai Håkon 2020 application/pdf https://hdl.handle.net/11250/2678637 https://doi.org/10.1029/2019JC015906 eng eng SIVA: 237906 Norges forskningsråd: 244262 Journal of Geophysical Research (JGR): Space Physics. 2020, 125 (2), . urn:issn:2169-9380 https://hdl.handle.net/11250/2678637 https://doi.org/10.1029/2019JC015906 cristin:1819881 CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ © 2020, Authors CC-BY Journal of Geophysical Research (JGR): Space Physics 125 2 14 Peer reviewed Journal article 2020 ftnorce https://doi.org/10.1029/2019JC015906 2022-10-13T05:50:32Z Air bubble penetration depths are investigated with a bottom‐mounted echosounder at a seabed observatory in northern Norway. We compare a 1‐year time series of observed bubble depth against modeled and estimated turbulent kinetic energy flux from breaking waves as well as wind speed and sea state. We find that the hourly mean and maximum bubble depths are highly variable, reaching 18 and 38 m, respectively, and strongly correlated with wind and sea state. The bubble depth is shallowest during summer following the seasonal variations in wind speed and wave height. Summertime shallowing of the mixed layer depth is not limiting the penetration depth. A strong relationship between bubble depth and modeled turbulent kinetic energy flux from breaking waves is found, similar in strength to the relationship between bubble depth and wind speed. The wind sea is more strongly correlated with bubble depth than the total significant wave height, and the swell is only weakly correlated, suggesting that the wave model does a reasonable separation of swell and wind sea. publishedVersion Article in Journal/Newspaper Northern Norway NORCE vitenarkiv (Norwegian Research Centre) Norway Journal of Geophysical Research: Oceans 125 2 |
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Open Polar |
collection |
NORCE vitenarkiv (Norwegian Research Centre) |
op_collection_id |
ftnorce |
language |
English |
description |
Air bubble penetration depths are investigated with a bottom‐mounted echosounder at a seabed observatory in northern Norway. We compare a 1‐year time series of observed bubble depth against modeled and estimated turbulent kinetic energy flux from breaking waves as well as wind speed and sea state. We find that the hourly mean and maximum bubble depths are highly variable, reaching 18 and 38 m, respectively, and strongly correlated with wind and sea state. The bubble depth is shallowest during summer following the seasonal variations in wind speed and wave height. Summertime shallowing of the mixed layer depth is not limiting the penetration depth. A strong relationship between bubble depth and modeled turbulent kinetic energy flux from breaking waves is found, similar in strength to the relationship between bubble depth and wind speed. The wind sea is more strongly correlated with bubble depth than the total significant wave height, and the swell is only weakly correlated, suggesting that the wave model does a reasonable separation of swell and wind sea. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Strand, Kjersti Opstad Breivik, Øyvind Pedersen, Geir Vikebø, Frode Bendiksen Sundby, Svein Christensen, Kai Håkon |
spellingShingle |
Strand, Kjersti Opstad Breivik, Øyvind Pedersen, Geir Vikebø, Frode Bendiksen Sundby, Svein Christensen, Kai Håkon Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
author_facet |
Strand, Kjersti Opstad Breivik, Øyvind Pedersen, Geir Vikebø, Frode Bendiksen Sundby, Svein Christensen, Kai Håkon |
author_sort |
Strand, Kjersti Opstad |
title |
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
title_short |
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
title_full |
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
title_fullStr |
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
title_full_unstemmed |
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation |
title_sort |
long-term statistics of observed bubble depth versus modeled wave dissipation |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2678637 https://doi.org/10.1029/2019JC015906 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Journal of Geophysical Research (JGR): Space Physics 125 2 14 |
op_relation |
SIVA: 237906 Norges forskningsråd: 244262 Journal of Geophysical Research (JGR): Space Physics. 2020, 125 (2), . urn:issn:2169-9380 https://hdl.handle.net/11250/2678637 https://doi.org/10.1029/2019JC015906 cristin:1819881 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ © 2020, Authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019JC015906 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
2 |
_version_ |
1766145518213267456 |