Abstract: A mooring system was placed at a depth of about 3300 m west of the Luzon Strait. Upper ocean current, temperature and salinity were measured at a high frequency for more than nine months. Using harmonic analysis and power spectral analysis, we discover that at the measuring site, O₁ tides had a greater amplitude in spring, and K₁ tides had a greater amplitude in winter. In summer, the internal tides were relatively weak, but there were always irregular diurnal tides at our observation site. We observed near-inertial oscillations at a depth of 200~270 m after Typhoon Nanmadol passed by; they rotated clockwise and the energy was transported downward. There were 105 internal solitary waves (solitons) passed by during our observation period, while there were no less internal solitary waves in winter than in spring and summer. The arrival times of two adjacent internal solitary waves differed by about 24.6~24.7 h, which cannot be divided into type-a waves or type-b waves.