Seasonal export fluxes of size-fractionated particulate derived from polonium-210: A case study in Xiamen Bay

Weifeng Yang; Yipu Huang; Min Chen; Yusheng Qiu

doi:10.1007/s00343-010-9039-9

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Seasonal export fluxes of size-fractionated particulate derived from polonium-210: A case study in Xiamen Bay

Updated：2023-05-16

- Seasonal export fluxes of size-fractionated particulate derived from polonium-210: A case study in Xiamen Bay
- Journal of Oceanology and Limnology Vol. 28, Issue 2, Pages: 379-386(2010)
- Affiliations：
  
  Department of Oceanography Xiamen University
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9039-9
  CLC：
- Online First：20 March 2010，
  
  Published：2010
- Accepted：
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Yang, W., Huang, Y., Chen, M. et al. Seasonal export fluxes of size-fractionated particulate derived from polonium-210: A case study in Xiamen Bay., Chin. J. Ocean. Limnol. 28, 379–386 (2010). https://doi.org/10.1007/s00343-010-9039-9
DOI：

Yang, W., Huang, Y., Chen, M. et al. Seasonal export fluxes of size-fractionated particulate derived from polonium-210: A case study in Xiamen Bay., Chin. J. Ocean. Limnol. 28, 379–386 (2010). https://doi.org/10.1007/s00343-010-9039-9 DOI：

摘要

Abstract

Size-fractionated 210Po and 210Pb

in the size fractions >0.4 μm

>2 μm and >10 μm

were examined to determine the seasonal variability of particulate fluxes in Xiamen Bay. Good correlations between 210Po and particulate organic carbon (POC) or non-Particulate Organic Matter (nPOM) suggested that 210Po can be used to trace the export fluxes of POC and nPOM. Both steady-state (SS) model and nSS model were used to evaluate fluxes of size-fractionated 210Po

results showed that nSS model was better than the SS model in coastal areas. Based on the nSS model

size-fractionated POC fluxes decreased with increasing particle size. For the particle size studied

maximum POC fluxes occurred in autumn

followed by spring

winter

and summer. Fluxes of nPOM were an order of magnitude higher than the corresponding size-fractionated POC fluxes. Differences between size-fractionated nPOM fluxes indicated that hydrodynamic conditions were the main factor regulating transportation of particulate out of the inner Bay. In winter most particulates

including >10 μm particles

were transported under the strongest hydrodynamic conditions. In contrast

only a fraction of the <2 μm particulates were transported from the inner Bay in spring. This study suggested that 210Po is a powerful tracer of seasonal particulate export in coastal seas.

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references

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