Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (5): 1490-1500.doi: 10.13278/j.cnki.jjuese.201605205

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Estimating Submarine Groundwater Discharge into the Jiaozhou Bay Using 226Ra

Yuan Xiaojie1, Guo Zhanrong2, Huang Lei1, Zhang Bin2, Ma Zhiyong2, Liu Jie2   

  1. 1. Guangzhou Marine Geological Survey/Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510075, China;
    2. College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, Fujian, China
  • Received:2016-01-23 Online:2016-09-26 Published:2016-09-26
  • Supported by:

    Supported by National Natural Sciences Foundation of China(41072174)


Submarine groundwater discharge (SGD) is a part of global water cycle, which delivers a large amount of solutes to the biogeochemical cycle and affects the coastal ecological environment. The 226Ra mass balance model was established to estimate the submarine groundwater discharge to the Jiaozhou Bay. The 226Ra sources include river transport, sediment diffusion and SGD, these sources should be in balance with the mixing loss of the bay water and open seawater when the seawater system is in the stable state. Except for the SGD was unknown item, other sources and sinks were quantified one by one. Calculated results showed that the SGD fluxes during September to October in 2011 was 7.85×106 m3·d-1, April to May in 2012 was 4.72×106 m3·d-1. Based on the SGD fluxes, the SGD derived nutrient fluxes were estimated.

Key words: submarine groundwater discharge, mass balance for 226Ra, nutrients, Jiaozhou Bay

CLC Number: 

  • P641.3

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