18O and 226Ra in the Minjiang River estuary, China and their hydrological implications
18O and 226Ra in the Minjiang River estuary, China and their hydrological implications
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中国闽江口的 18O 和 226Ra 及其水文意义
DOI：
10.1016/j.ecss.2015.12.023
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发表时间：
2016-05
期刊：
影响因子：
--
通讯作者：
Bin Zhang
中科院分区：
文献类型：
--
作者：
Huatai Liu;Zhanrong Guo;Aiguo Gao;Xiaojie Yuan;Bin Zhang
本文对闽江口地下水和地表水中的2 H、18 O和226 Ra值进行了干湿季的测定。由于水循环过程中蒸发的存在，地下水和地表水的δ 18 O值在旱季总是高于丰水期。在枯水期，岷江南岸地下水δ 18 O值远高于北方，这是因为南岸农田的蒸发作用比北方城市化地区强。河口水中δ 18 O值与盐度呈良好的正相关关系，两个季节的相关系数均为0.96（p = 0.05）。河口水体中226 Ra的活度随盐度的增加而增加，这是由于河流悬浮颗粒的解吸作用。~（226）Ra活度在盐度为20.5时达到峰值。根据三端元模型，计算出河口水的平均比例为：地下水0.02，河水0.39，海水0.59。根据这一混合比，估计丰水期流入河口的地下水为9.31 × 106 m3 d − 1。
In this work, the2H,18O and226Ra values in groundwater and surface water in the Minjiang River estuary were investigated in the dry and wet seasons. The δ18O values in the dry season were always higher than those in the wet season in both groundwater and surface water because of the presence of evaporation in the water cycle process. During the dry season, the δ18O values in groundwater on the southern bank of the Minjiang River are much higher than those on the northern bank because evaporation is more intense in the farmland of the southern bank than in the urbanized northern bank. The δ18O values in the estuarine water exhibit a good positive correlation with salinity, with a coefficient of 0.96 (p = 0.05) in both seasons. The226Ra activities in the estuarine water increase with increasing salinity because of desorption from riverine suspended particles. The226Ra activity reaches a peak value at a salinity of 20.5. Based on a three-endmember model, the average proportions of the estuarine water are calculated to be 0.02 for groundwater, 0.39 for river water and 0.59 for seawater. From this mixing ratio, the groundwater discharge into the estuary is estimated to be 9.31 × 106m3d−1in the wet season.
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影响因子：
5.3
作者：
W. Moore
通讯作者：
W. Moore
DOI：
10.1016/j.scitotenv.2011.06.017
发表时间：
2011-09
期刊：
The Science of the total environment
影响因子：
--
作者：
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通讯作者：
Ni Su;Jinzhou Du;W. Moore;Sumei Liu;Jing Zhang
影响因子：
3.2
作者：
Gibson, JJ;Edwards, TWD;Peters, DL
通讯作者：
Peters, DL
影响因子：
3.4
作者：
F. Einsiedl
通讯作者：
F. Einsiedl
影响因子：
1.4
作者：
Yang Jun-hong
通讯作者：
Yang Jun-hong