Geostrophic Current, Divergence and Convergence in the South China Sea, Area II: Sabah, Sarawak and Brunei Darussalam

Abstract

Current and circulation patterns for the area where water depth exceeded 500 m were calculated from geostrophic balance. Divergence and convergence inferred from horizontal circulation matched quite well with the observed vertical migration of the pycnocline, i.e. an indication of upwelling and downwelling. The spatial circulation pattern for July-August 1996 was quite different from that for May 1997, despite a generally similar prevailing wind. Eddies and meanders were the main features causing the difference. Interpretation of chemical and biological data of the area should take into consideration these local and sporadic physical phenomena.