海洋地质前沿2017，Vol.33Issue(8)：32-40,9.DOI:10.16028/j.1009-2722.2017.08005
海南岛南部沿岸地下水水化学要素变化及海水入侵特征
VARIATION IN CHEMICAL ELEMENTS OF GROUNDWATER ALONG THE SOUTH COAST OF HAINAN ISLAND AND SIGNIFICANCE TO SEAWATER INTRUSION
摘要
Abstract
The data of 2014 from monitoring wells in South Coast of Hainan Island was studied during the times of neap tide and spring tide.Variation in chemical elements of the groundwater is adopted for revealing its relation with seawater intrusion.Our results show that chemical element concentration varies with tidal cycles,location of wells and surrounding environment.In the wells of QZ2 and QZ5,the contents of K+,Na+,Ca2+ are quite close,but Mg2+ is obviously different.In the well QZ2,it is 18.82％ higher than that in well QZ5,suggesting that the well QZ2 is more severely affected by seawater.Na+ and C1-are the dominant ions in both the wells of QZ2 and QZ5.The average ratio of Na+ is 83％～85％,C1-is 87％～88％,showing effects of seawater.In the well QZ3,HCO3-is the dominant,the content is 62％～63％,and Ca2+ also occupies a large proportion,showing the predominance of fresh water.The SAR of QZ2 and QZ5 wells are 57.95～ 63.24 and 57.20～ 63.13 respectively.However,it is 2.17～4.42 in well QZ3,obviously lower than those in QZ2 and QZ5.As the conclusion,wells QZ2 and QZ5 have higher risk of salinization.关键词
海南岛南部/地下水/化学要素/海水入侵Key words
South Hainan Island/groundwater/chemical element/seawater intrusion分类
海洋科学引用本文复制引用
袁晓婕,黄向青,甘华阳,黄磊..海南岛南部沿岸地下水水化学要素变化及海水入侵特征[J].海洋地质前沿,2017,33(8):32-40,9.基金项目
国土资源部海底矿产资源重点实验室开放基金课题(KLMMR-2014-A-07). （KLMMR-2014-A-07）
