%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Dandonneau, Yves
%T Abnormal bloom of phytoplankton around 10°N in the western Pacific during the 1982-83 ENSO
%S Western Pacific international meeting and workshop on Toga Coare : proceedings
%C Nouméa
%D 1989
%E Picaut, Joël
%E Lukas, R.
%E Delcroix, Thierry
%L fdi:30264
%G ENG
%I ORSTOM
%K PHYTOPLANCTON ; ANOMALIE
%K CONCENTRATION ; ENSO ; 1982 1983
%K PACIFIQUE TROPICAL OUEST
%P 791-801
%U https://www.documentation.ird.fr/hor/fdi:30264
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/doc34-08/30264.pdf
%W Horizon (IRD)
%X The chlorophyll concentration at the surface of the tropical Pacific has been monitored through the 1982-83 ENSO, owing to the SURTROPAC ships of opportunity network. The event was characterized by a decrease in chlorophyll concentrations at the equator, where a belt of relatively rich water however persisted. The most striking anomaly was observed in the western Pacific between 5°N and 15°N. In this region, chlorophyll at the surface is generally less than O.O7 mg m-3, caused by a mixed layer exhausted in nutrients and by strong density gradient in the thermocline. From october 1982 to march 1983, higher concentrations up to 0.70 mg m-3 have been recorded by the network. This is consistent with the shallowing of the thermocline which characterizes all ENSO events and was especially well marked in 1982-83. This bloom can be explained by nutrients supplied to the surface mixed layer through the thermocline.
%B Western Pacific International Meeting and Workshop on Toga Coare
%8 1989/05/24-30
%$ 036MILMAR02 ; 032CLIMET