Seasonal variability of deep ocean particle fluxes
and particle composition in the north open sea of Prydz Bay

doi:10.1007/s11707-008-0057-2

Front. Earth Sci.

0, Vol.

Issue () : 458-464 https://doi.org/10.1007/s11707-008-0057-2

Seasonal variability of deep ocean particle fluxes and particle composition in the north open sea of Prydz Bay

HU Chuanyu¹, XUE Bin², LIU Xiaoya², PAN Jianming²

1.Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration；China University of Geosciences; 2.Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration;

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Abstract 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 C_inorg/C_org was always greater than 1, indicate a net removal of CO₂ from surface water by biological activity.

Issue Date: 05 December 2008

Cite this article:

HU Chuanyu,XUE Bin,LIU Xiaoya, et al. Seasonal variability of deep ocean particle fluxes and particle composition in the north open sea of Prydz Bay[J]. Front. Earth Sci., 0, (): 458-464.

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https://academic.hep.com.cn/fesci/EN/10.1007/s11707-008-0057-2
https://academic.hep.com.cn/fesci/EN/Y0/V/I/458

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