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 |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/79319 http://urn.nb.no/URN:NBN:no-82436 https://doi.org/10.1029/2019JC015906 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/79319 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/79319 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 2020-07-20T14:29:10Z http://hdl.handle.net/10852/79319 http://urn.nb.no/URN:NBN:no-82436 https://doi.org/10.1029/2019JC015906 EN eng SIVA/237906 NFR/244262 http://urn.nb.no/URN:NBN:no-82436 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. Journal of Geophysical Research (JGR): Space Physics. 2020, 125(2) http://hdl.handle.net/10852/79319 1819881 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Space Physics&rft.volume=125&rft.spage=&rft.date=2020 Journal of Geophysical Research (JGR): Space Physics 125 2 14 https://doi.org/10.1029/2019JC015906 URN:NBN:no-82436 Fulltext https://www.duo.uio.no/bitstream/handle/10852/79319/2/2019JC015906.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2169-9380 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.1029/2019JC015906 2020-09-16T22:30:08Z 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. Article in Journal/Newspaper Northern Norway Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Journal of Geophysical Research: Oceans 125 2 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
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. |
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 |
http://hdl.handle.net/10852/79319 http://urn.nb.no/URN:NBN:no-82436 https://doi.org/10.1029/2019JC015906 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
2169-9380 |
op_relation |
SIVA/237906 NFR/244262 http://urn.nb.no/URN:NBN:no-82436 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. Journal of Geophysical Research (JGR): Space Physics. 2020, 125(2) http://hdl.handle.net/10852/79319 1819881 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Space Physics&rft.volume=125&rft.spage=&rft.date=2020 Journal of Geophysical Research (JGR): Space Physics 125 2 14 https://doi.org/10.1029/2019JC015906 URN:NBN:no-82436 Fulltext https://www.duo.uio.no/bitstream/handle/10852/79319/2/2019JC015906.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
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_ |
1766145534833197056 |