[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

[AOS13-P01] Kuroshio and Hypoxia in the East and South China Seas

*Chen-Tung Arthur Chen^1,2, Hon-Kit Lui¹ (1.National Sun Yat Sen University, 2.State Key Laboratory of Satellite Ocean Environment Dynamics)

Keywords:Kuroshio, hypoxia, anoxia, East China Sea, South China Sea

Anoxia and hypoxia have been widely observed in estuarine and coastal regions worldwide over the past few decades. Oxygen depletion events are fueled by decomposition of newly produced marine and river-borne biogenic substances sinking to the bottoms waters. It has been reported that the dissolved oxygen (DO) increased but productivity decreased with increasing amount of WPS seawater intrusion in the South China Sea and the Pearl River estuary. This is because the intrusion of West Philippine Sea seawater helps to replace the relatively high nutrients but low DO water in the coast of the northern South China Sea, thus diminishing the coastal eutrophication and hypoxia. Hypoxia in the East China Sea may also be affected by the Kuroshio intrusion.