[ACG46-P28] Satellite observation of internal waves converting polarity in the South China Sea
Keywords:oceanic internal solitary waves, polarity conversion, depression ISWs
Moreover, it is found that the elevation ISWs do not show seasonal-locking characteristic. ISWs are found nearly in every season. The bottom topography, hydrological conditions and local thermocline structure which are generally regarded as the conditions for the generation of the elevation ISWs are further explored. Taking the two-layer KdV theory, it is found that ISWs in SCS exhibit a time gap of about 12.4 hours. This time gap is well consistent with the period of local semi-diurnal tide. Our findings thus strongly suggest that the elevation ISWs in SCS can be evolved from the depression ISWs in SCS, which are generally originated from Luzon strait.