Study of Coastal Upwelling in North of Papua Waters (West Pacific)) During El Nino Years Events Using Multi Sensors Satellite
H. J. D. Waas, V. Siregar

Source: SEAMEO BIOTROP's Research Grant | 2012


Coastal upwelling in the northern of Papua waters occur during El Nino events are caused by the influence of the westerly wind and anomalies (WWBs) during the months of November to March and intensive upwelling in December-March. Ekman transport moves surface water masses away from the coastal waters to the equatorial Warm Pool. This phenomenon is consistent with the current anomaly of New Guinea Coastal Current (NGCC) and New Guinea Under Current (NGUC) turned into the equator and Rossby wave advection that reach waters of the north coast of Papua during January - March. The area around Jayapura (Indonesia) to Papua New Guinea is an area of potential occurrence of coastal upwelling. Water cooler in this region during esterly wind (June to September) not as a result of the coastal upwelling event but the cold water produced during upwelling in the waters around Salomon Islands infiltrate through Vitiaz Street and St.George 's Channel as result advection of NGCC boosted by eddys activity in the waters. Increased fertility of oligotropic Warm Pool during El Nino episode through the mechanism of coastal upwelling events, front chlorophyll-a, local siclonic Eddies and alleged donation nutrientrich upwelling water and chlorophyll-a from eastern Indonesia surrounding waters which is transported through North Equatorial Counter Current (NECC), which was apparent in the image of the distribution of the component zonal (U) geostrophic current. Exploration of multi-sensor satellite image data useful in studying the phenomenon of upwelling and contributing factors that can not be observed by conventional equipment (Rossby wave and Kelvin wave).

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