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篇目详细内容 |
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【篇名】 |
Seasonal variability of deep ocean particle fluxes and particle composition in the north open sea of Prydz Bay |
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【刊名】 |
Frontiers of Earth Science in China |
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【刊名缩写】 |
Front. Earth Sci. China |
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【ISSN】 |
1673-7385 |
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【EISSN】 |
1673-7490 |
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【DOI】 |
10.1007/s11707-008-0057-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2008 |
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【卷期】 |
2
卷4期 |
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【页码】 |
458-464
页,共
7
页 |
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【作者】 |
HU Chuanyu;
XUE Bin;
LIU Xiaoya;
PAN Jianming;
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【关键词】 |
particle flux, particle composition, Prydz Bay, Antarctica |
【摘要】 |
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Time-series Mark VII sediment trap was deployed at 72°58.55＇E, 62°28.63＇S (north of the Prydz Bay, Antarctica) during the cruise of CHINARE-15 in cooperation with University of Marine of America. Seasonal variability of deep ocean particle fluxes and biogenic components were investigated in order to reveal the fluxes and biogeochemistry of sinking particles in the deep ocean. The results show that the total mass flux of sinking particles at a water depth of 1000 m ranges from 13.00 to 334.59 mg·d-1·m-2). A marked seasonal variability exists in the fluxes of all particle components reflecting the seasonal changes in upper water productivity. Biogenic material was a significant component and biogenic silica represented more than 80% of the biogenic matter, reflecting a diatom dominated system, but a lithogenic fraction is always present. The fact that the POC dominated over particulate inorganic carbon (as CaCO3) and Cinorg/Corg was always greater than 1, indicate a net removal of CO2 from surface water by biological activity. |
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