The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait
The impact of fortnightly stratification variability induced by tide–topography interaction on the generation of baroclinic tides in the Luzon Strait is numerically investigated using the MIT general circulation model. The simulation shows that advection of buoyancy by baroclinic flows results in da...
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| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/7/703 |
| _version_ | 1797528660140359680 |
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| author | Zheen Zhang Xueen Chen Thomas Pohlmann |
| author_facet | Zheen Zhang Xueen Chen Thomas Pohlmann |
| author_sort | Zheen Zhang |
| collection | DOAJ |
| description | The impact of fortnightly stratification variability induced by tide–topography interaction on the generation of baroclinic tides in the Luzon Strait is numerically investigated using the MIT general circulation model. The simulation shows that advection of buoyancy by baroclinic flows results in daily oscillations and a fortnightly variability in the stratification at the main generation site of internal tides. As the stratification for the whole Luzon Strait is periodically redistributed by these flows, the energy analysis indicates that the fortnightly stratification variability can significantly affect the energy transfer between barotropic and baroclinic tides. Due to this effect on stratification variability by the baroclinic flows, the phases of baroclinic potential energy variability do not match the phase of barotropic forcing in the fortnight time scale. This phenomenon leads to the fact that the maximum baroclinic tides may not be generated during the maximum barotropic forcing. Therefore, a significant impact of stratification variability on the generation of baroclinic tides is demonstrated by our modeling study, which suggests a lead–lag relation between barotropic tidal forcing and maximum baroclinic response in the Luzon Strait within the fortnightly tidal cycle. |
| first_indexed | 2024-03-10T10:01:29Z |
| format | Article |
| id | doaj.art-409d53fac7174008afedc6c3d77c20ab |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T10:01:29Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-409d53fac7174008afedc6c3d77c20ab2023-11-22T01:50:57ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-06-019770310.3390/jmse9070703The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon StraitZheen Zhang0Xueen Chen1Thomas Pohlmann2College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, ChinaCollege of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, ChinaCentre for Earth System Research and Sustainability, Institute of Oceanography, University of Hamburg, 20146 Hamburg, GermanyThe impact of fortnightly stratification variability induced by tide–topography interaction on the generation of baroclinic tides in the Luzon Strait is numerically investigated using the MIT general circulation model. The simulation shows that advection of buoyancy by baroclinic flows results in daily oscillations and a fortnightly variability in the stratification at the main generation site of internal tides. As the stratification for the whole Luzon Strait is periodically redistributed by these flows, the energy analysis indicates that the fortnightly stratification variability can significantly affect the energy transfer between barotropic and baroclinic tides. Due to this effect on stratification variability by the baroclinic flows, the phases of baroclinic potential energy variability do not match the phase of barotropic forcing in the fortnight time scale. This phenomenon leads to the fact that the maximum baroclinic tides may not be generated during the maximum barotropic forcing. Therefore, a significant impact of stratification variability on the generation of baroclinic tides is demonstrated by our modeling study, which suggests a lead–lag relation between barotropic tidal forcing and maximum baroclinic response in the Luzon Strait within the fortnightly tidal cycle.https://www.mdpi.com/2077-1312/9/7/703Luzon Straitbaroclinic tidesstratification variabilityMITgcm |
| spellingShingle | Zheen Zhang Xueen Chen Thomas Pohlmann The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait Journal of Marine Science and Engineering Luzon Strait baroclinic tides stratification variability MITgcm |
| title | The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait |
| title_full | The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait |
| title_fullStr | The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait |
| title_full_unstemmed | The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait |
| title_short | The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait |
| title_sort | impact of fortnightly stratification variability on the generation of baroclinic tides in the luzon strait |
| topic | Luzon Strait baroclinic tides stratification variability MITgcm |
| url | https://www.mdpi.com/2077-1312/9/7/703 |
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