Internal solitary waves in the northwestern South China Sea inferred from satellite images

Details Internal solitary waves in the northwestern South China Sea inferred from satellite images Internal solitary waves in the northwestern South China Sea inferred from satellite images

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3513605l&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 13, CiteID L13605

Physics

2

Oceanography: Physical: Internal And Inertial Waves, Oceanography: General: Remote Sensing And Electromagnetic Processes (0689, 2487, 3285, 4455, 6934), Oceanography: Physical: Surface Waves And Tides (1222), Oceanography: Physical: Nearshore Processes

Scientific paper

Internal solitary waves (ISWs) in the northwestern South China Sea are studied from three spaceborne synthetic aperture radar images. ISWs are observed in the same area 18.5-20.5°N, 112-114°E. The common characteristics of the ISWs are: 1) their propagation directions are 270 ~ 300 degrees with respect to north; 2) the wavelength is about 1.2-1.6 km; 3) the distance between two neighboring ISW packets is about 10 km, but it is not a constant; 4) in two images, the easternmost ISWs evolve into multiple rank-ordered soliton on the shelf (ISW fission); and 5) near Shenhu Shoal, a local uplift at 19.5°N, 112.9°E, one ISW packet splits into two ISW packets. Based on their propagation direction and barotropic tidal forcing analysis, we suggest that these ISWs originate from tide-topography interactions in the Luzon Strait. It takes the internal tide about 100 hours to propagate 880 km from the Luzon Strait to the observation site.

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