Sinking of particulates 234Thxs, 7Be and 210Pbxs in the Changjiang estuary, China

Dekun Huang; Jinzhou Du; Yunfeng Wu; Daoji Li; Jing Zhang

doi:10.1007/s00343-010-9036-z

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Sinking of particulates 234Thxs, 7Be and 210Pbxs in the Changjiang estuary, China

Updated：2023-05-16

- Sinking of particulates 234Thxs, 7Be and 210Pbxs in the Changjiang estuary, China
- Journal of Oceanology and Limnology Vol. 28, Issue 6, Pages: 1152-1159(2010)
- Affiliations：
  
  State Key Laboratory of Estuarine and Coastal Research East China Normal University
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9036-z
  CLC：
- Online First：10 November 2010，
  
  Published：2010
- Accepted：
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Huang, D., Du, J., Wu, Y. et al. Sinking of particulates 234Thxs, 7Be and 210Pbxs in the Changjiang estuary, China., Chin. J. Ocean. Limnol. 28, 1152–1159 (2010). https://doi.org/10.1007/s00343-010-9036-z
DOI：

Huang, D., Du, J., Wu, Y. et al. Sinking of particulates 234Thxs, 7Be and 210Pbxs in the Changjiang estuary, China., Chin. J. Ocean. Limnol. 28, 1152–1159 (2010). https://doi.org/10.1007/s00343-010-9036-z DOI：

摘要

Abstract

The time scale of transport and reaction processes in the ocean can be evaluated using natural radionuclides of different half-lives. In the present study

we evaluated the residence times of particulate reactive radionuclides 7Be

210Pbxs and 234Th in the Changjiang (Yangtze River) estuary

which is a high turbidity estuary

in June

2006. The residence times of particulate 7Be

234Thxs and 210Pbxs in the Changjiang estuary were calculated to be 0.7–20.4

0.18–4.1 and 0.6–89.8 d

respectively. The obtained residence times of those nuclides are comparable with those of other estuaries and bays. For 234Thxs and 7Be

the residence times decreased with increasing concentrations of suspended particulate matter (SPM); however

those of 210Pbxs increased. Moreover

scavenging residence times of 234Th and 7Be increased from coast to offshore

while those of 210Pbxs decreased.

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references

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