| 深圳大沙河河水与海水关系的水文化学识别 |
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| 引用本文： | 杨巧凤,李文鹏,王瑞久.深圳大沙河河水与海水关系的水文化学识别[J].水文地质工程地质,2010,37(2):32-35. |
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| 作者姓名： | 杨巧凤 李文鹏 王瑞久 |
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| 作者单位： | 中国地质大学(北京);中国地质环境监测院; |
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| 摘 要： | 为了解深圳沿岸河口处海水与河水的混合关系,在大沙河下游靠近河口段密集取17件河水样,依据其水化学数据,分析了主要离子Ca、Mg、Na、K、SO4、HCO3与Cl的关系,Br与Cl的关系以及piper三线图解,在研究区河段从上游至入海口,对河水样品有如下认识:(1)上游4个样品(Cl<100mg/L)接受降水和地下水的补给;(2)4个样品(150mg/L
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| 关 键 词： | 大沙河河水 海水 水文化学 海水入侵 |
Hydrochemistry recognization of the relationship between seawater and Dasha river water of Shenzhen |
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| YANG Qiao-feng,LI Wen-peng,WANG Rui-jiu.Hydrochemistry recognization of the relationship between seawater and Dasha river water of Shenzhen[J].Hydrogeology and Engineering Geology,2010,37(2):32-35. |
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| Authors: | YANG Qiao-feng LI Wen-peng WANG Rui-jiu |
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| Affiliation: | 1.China University of Geosciences (Beijing),Beijing 100083,China; 2.China Institute for Geo-Environmental Monitoring,Beijing 100081,China |
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| Abstract: | In order to study the mixing relationship between seawater and surface water on the coast of Shenzhen, 17 river water samples were collected near the estuary in the downstream of the Dasha river which disembogue into the sea. According to the hydrochemistry data, the relationships of major ions (Ca ~(2+) 、Mg~(2+) , Na~+ 、K~+ 、SO_4~(2-)、HCO_3~ -) vs. Cl~- , Br~- vs. Cl~- and the piper diagram were analyzed. The river water data in comparison with seawater dilution lines in the scatter diagrams are divided into four groups: (1) 6 samples with salinities around 5 000 ~ 10 000 mg/L Cl~- , explained by the mixing of seawater with fresh water in downstream of rubber-dam; (2) 4 samples with salinities lower than 100 mg/L Cl~-, recharged by precipitation and groundwater in the upstream; (3)4 samples with salinities around 150 ~ 1500mg/L Cl~ -, resulted from anthropogenic contamination along the river; (4) 3 samples with salinities around 1 500 ~4 000mg/L Cl~- , characterized by the transition zone between polluted river water and seawater. |
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| Keywords: | Dasha river water seawater hydrochemistry seawater intrusion |
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