DISTRIBUTIONS OF PHYTOPLANKTON BLOOMS IN THE SOUTHERN-OCEAN

被引:294
作者
SULLIVAN, CW
ARRIGO, KR
MCCLAIN, CR
COMISO, JC
FIRESTONE, J
机构
[1] UNIV SO CALIF,HANCOCK INST MARINE STUDIES,GRAD PROGRAM OCEAN SCI,LOS ANGELES,CA 90089
[2] GEN SCI CORP,LAUREL,MD 20707
[3] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771
关键词
D O I
10.1126/science.262.5141.1832
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
A regional pigment retrieval algorithm for the Nimbus-7 Coastal Zone Color Scanner (CZCS) has been tested for the Southern Ocean. The pigment concentrations estimated with this algorithm agree to within 5 percent with in situ values and are more than twice as high as those previously reported. The CZCS data also revealed an asymmetric distribution of enhanced pigments in the waters surrounding Antarctica; in contrast, most surface geophysical properties are symmetrically distributed. The asymmetry is coherent with circumpolar current patterns and the availability of silicic acid in surface waters. Intense blooms (> 1 milligram of pigment per cubic meter) that occur downcurrent from continental masses result from dissolved trace elements such as iron derived from shelf sediments and glacial melt.
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页码:1832 / 1837
页数:6
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