Physical structure and vertical distribution of chlorophyll a in winter sea-ice from Weddlle Sea, Antarctica

DAI Fang-fang; WANG Zi-pan; LI Zhi-jun; E. ALLHUSEN; G. DIECKMANN

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DAI Fang-fang, WANG Zi-pan, LI Zhi-jun, E. ALLHUSEN, G. DIECKMANN. Physical structure and vertical distribution of chlorophyll a in winter sea-ice from Weddlle Sea, Antarctica[J]. Haiyang Xuebao, 2008, 30(4): 104-113.

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Physical structure and vertical distribution of chlorophyll a in winter sea-ice from Weddlle Sea, Antarctica

1.
Zhejiang Wanli University, Ningbo 315100, China
2.
Zhejiang Wanli University, Ningbo 315100, China;Second Institute of Oceanography, Hangzhou 310012, China
3.
Dalian University of Technology, Dalian 116024, China
4.
Alfred Wegener Institute for Marine and Polar Research, Bremerhaven 27570, Germany

Received Date: 2007-06-05
Rev Recd Date: 2008-03-25

Abstract

Abstract

The investigation on sea-ice research in combination with physics,chemistry and ecology was carried out in North-Western of Weddell Sea,Antarctica,during the cruise of ANT/XXⅢ-7 on board POLARSTERN in the austral winter (Aug-Oct) 2006.Textural analyses of seaice cores were carried out and the results related to the distribution of chlorophyll a in ice cores.The mean concentrations of chlorophyll a in the sea ice varied considerably with ice texture.The concentration of chlorophyll per core a ranged from 2.10~84.40 μg/dm³ with a mean of 16.56 μg/dm³.The value of R (chlorophyll a/gorse of chlorophyll) ranged from 0.179~0.183.These high winter chlorophyll values indicate that primary produc-tion was considerable and confirm that there is significant primary production in Antarctic sea ice during winter and thus probably constitutes a major proportion of Southern Ocean primary production and carbon flux before the sea ice rereats.
- winter sea-ice,
- physical structure,
- chloro phylla,
- Antarctica

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References(26)

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