ESTIMATION OF VERTICAL DISTRIBUTION OF CHLOROPHYLL a OFF EAST HOKKAIDO BY GAUSSIAN CURVE FITTING (15th Symposium on Polar Biology)
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概要
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Sea truth data on the concentration of chlorophyll pigments were used to determine the empirical relationship between surface chlorophyll a concentration and parameters derived from a Gaussian curve for a possible development of a local algorithm of primary production in the western subarctic North Pacific Ocean. Data were obtained from the line between 39°N, 146°45'E and 42°50'N, 144°50'E from April 1990 to July 1991. One optical depth (1/k) can be estimated from the concentration of chlorophyll a (B_c) at the surface depth. Surface Bc can be estimated from B_c+B_p (concentration of pheopigments) in one optical depth. The background concentration of chlorophyll a (B_o), the depth of the subsurface chlorophyll maximum (z_m), and the total biomass above the background (h) which control the Gaussian curve can be determined from the surface Bc. Therefore, once surface Bc is obtained, the vertical profile of Bc is determined. However relative variability in the estimated values from the surface Bc can be high when the standing stock of chlorophyll a is lower than 300 mg Chl. a m^<-2>. This may suggest that the present model can be applied only to a relatively productive area. The standing crop of chlorophyll pigments in one optical depth, which can be estimated from the ocean color obtained from the satellite, would be useful to determine the standing crop of chlorophyll pigments in the euphotic layer.
- 国立極地研究所の論文
著者
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Saito H
Hokkaido National Fisheries Research Institute
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SAITO HIROAKI
Tohoku National Fisheries Research Institute
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KASAI Hiromi
Hokkaido National Fisheries Research Institute
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TAGUCHI Satoru
Hokkaido National Fisheries Research Institute
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SAITO Hiroaki
Hokkaido National Fisheries Research Institute
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Saito H
Marine Biochemistry Division National Research Institute Of Fisheries Science
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SAITO Hiroaki
Tokai Regional Fisheries Research Laboratory, Fisheries Agency
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Taguchi S
Hokkaido National Fisheries Research Institute
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Taguchi S
Soka University
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Taguchi Satoru
Faculty Of Engineering Soka University
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Taguchi S
Faculty Of Engineering Soka University
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Saito H
National Research Institute Of Fisheries Science Fisheries Research Agency
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Saito Hiroaki
Laboratory Of Lipid Chemistry National Research Institute Of Fisheries Science Ministry Of Agricultu
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Saito Hiroaki
Fisheries Oceanography Tohoku National Fisheries Research Institute
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Saito Hiroaki
Hokkaido National Fisheries Rasearch Institute
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Saito Hiroaki
Laboratory Of Lipid Chemistry National Research Institute Of Fisheries Science Ministry Of Agricultu
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