Energetics and temporal variability of internal tides in Luzon Strait: a nonhydrostatic numerical simulation

Mingjie Li; Yijun Hou; Yuanlong Li; Po Hu

doi:10.1007/s00343-012-1289-2

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Energetics and temporal variability of internal tides in Luzon Strait: a nonhydrostatic numerical simulation

Updated：2023-05-16

- Energetics and temporal variability of internal tides in Luzon Strait: a nonhydrostatic numerical simulation
- Journal of Oceanology and Limnology Vol. 30, Issue 5, Pages: 852-867(2012)
- Affiliations：
  
  1. Key Laboratory of Ocean Circulation and Waves (KLOCAW) Chinese Academy of Sciences
  2. Institute of Oceanology Chinese Academy of Sciences
  3. Graduate University of Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-012-1289-2
  CLC：
- Online First：05 September 2012，
  
  Published：2012
- Accepted：
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Li, M., Hou, Y., Li, Y. et al. Energetics and temporal variability of internal tides in Luzon Strait: a nonhydrostatic numerical simulation., Chin. J. Ocean. Limnol. 30, 852–867 (2012). https://doi.org/10.1007/s00343-012-1289-2
DOI：

Li, M., Hou, Y., Li, Y. et al. Energetics and temporal variability of internal tides in Luzon Strait: a nonhydrostatic numerical simulation., Chin. J. Ocean. Limnol. 30, 852–867 (2012). https://doi.org/10.1007/s00343-012-1289-2 DOI：

摘要

Abstract

A fully nonlinear

three-dimensional nonhydrostatic model driven by four principal tidal constituents (M2

and O1) is used to investigate the spatial-temporal characteristics and energetics of internal tides in Luzon Strait (LS). The model results show that

during spring (neap) tides

about 64 (47) GW (1 GW=109 W) of barotropic tidal energy is consumed in LS

of which 59.0% (50.5%) is converted to baroclinic tides. About 22 (11) GW of the derived baroclinic energy flux subsequently passes from LS

among which 50.9% (54.3%) flows westward into the South China Sea (SCS) and 45.0% (39.7%) eastward into the Pacific Ocean

and the remaining 16 (13) GW is lost locally owing to dissipation and convection. It is revealed that generation areas of internal tides vary with the spring and neap tide

indicating different source areas for internal solitary waves in the northern SCS. The region around the Batan Islands is the most important generation region of internal tides during both spring and neap tides. In addition

the baroclinic tidal energy has pronounced seasonal variability. Both the total energy transferred from barotropic tides to baroclinic tides and the baroclinic energy flux flowing out of LS are the highest in summer and lowest in winter.

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