The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait
| Autor: | Thomas Pohlmann, Zheen Zhang, Xueen Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Buoyancy
010504 meteorology & atmospheric sciences MIT General Circulation Model Baroclinity Naval architecture. Shipbuilding. Marine engineering Stratification (water) VM1-989 Ocean Engineering Forcing (mathematics) MITgcm GC1-1581 engineering.material Atmospheric sciences Oceanography 01 natural sciences Barotropic fluid 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering 010505 oceanography Advection baroclinic tides Energy analysis stratification variability Luzon Strait engineering Geology |
| Zdroj: | Journal of Marine Science and Engineering, Vol 9, Iss 703, p 703 (2021) Journal of Marine Science and Engineering Volume 9 Issue 7 |
| ISSN: | 2077-1312 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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