Figure 1

Sampling locations of sediment trap with CTD sensors in the northern South China Sea (The map was created using Surfer software v.12 Surfer, Golden Software). Stations K1 and K2 are denoted by stars. Stations H1, H2, and H3 are denoted by triangles. Black pin shows the position of Dongsha Atoll. Red lines are reported internal waves which were captured by SAR images7.