Estimates of M2 internal tide energy fluxes along the margin of Northwestern Pacific using TOPEX/POSEIDON altimeter data

Details Estimates of M2 internal tide energy fluxes along the margin of Northwestern Pacific using TOPEX/POSEIDON altimeter data Estimates of M2 internal tide energy fluxes along the margin of Northwestern Pacific using TOPEX/POSEIDON altimeter data

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30qoce4t&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 17, pp. OCE 4-1, CiteID 1889, DOI 10.1029/2003GL018008

Statistics

Computation

4

Oceanography: General: Continental Shelf Processes, Oceanography: General: Remote Sensing And Electromagnetic Processes (0689), Oceanography: Physical: Internal And Inertial Waves, Oceanography: Physical: Sea Level Variations, Oceanography: Physical: Surface Waves And Tides (1255)

Scientific paper

TOPEX/POSEIDON altimeter data from October 1992 to June 2002 are used to calculate the energy flux of M2 internal tides along the margin of Northwestern Pacific. This arc borderline of the Pacific Basin is characterized by sharp changes in bottom topography, which constitute good boundary conditions for internal tidal energy concentration. We extract baroclinic tides, that yield energy transmission, from temporarily coherent internal tide signals in the altimeter data. We use the field measurements of current velocities in the South China Sea (SCS) to test the method. The results show that satellite-derived M2 tide components agree with the field data very well. Computation results indicate that the maximum energy flux of M2 internal tides, 3 kW m-1, appears in the Ryukyu Trench. The total energy flux of M2 internal tides along the margin of Northwestern Pacific is about 15GW.

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