| 淮河下游地区地表水与地下水同位素特征分析 |
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| 引用本文： | 蒋芳婷,孟玉川,宋泓苇,李璐汐.淮河下游地区地表水与地下水同位素特征分析[J].水文,2022,42(1):90-96. |
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| 作者姓名： | 蒋芳婷 孟玉川 宋泓苇 李璐汐 |
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| 作者单位： | 四川大学水力学与山区河流开发保护国家重点实验室/水利水电学院 |
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| 摘 要： | 为探明淮河下游地区地表水与地下水稳定同位素的组成特征,于2020年11月对该区域进行代表性采样,共采集地表水样13个,地下水样82个.结合全球大气降水同位素监测网(GNIP)公布的南京降水同位素数据,根据最小二乘法得出当地大气降水线(LMWL)方程为:δD=8.49δ18O+17.71,其斜率和截距高于全球大气降水线(...
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| 关 键 词： | 稳定同位素 降水 地表水 地下水 氘盈余 |
Analysis of Isotopic Characteristics of Surface Water and Groundwater in the Lower Reaches of Huaihe River |
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| JIANG Fangting,MENG Yuchuan,SONG Hongwei,LI Luxi.Analysis of Isotopic Characteristics of Surface Water and Groundwater in the Lower Reaches of Huaihe River[J].Hydrology,2022,42(1):90-96. |
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| Authors: | JIANG Fangting MENG Yuchuan SONG Hongwei LI Luxi |
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| Institution: | (State Key Laboratory of Hydraulics and Mountain River Engineering/College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China) |
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| Abstract: | In order to explore the characteristics of stable isotopic composition of surface water and groundwater in the lower reaches of the Huaihe River,this study conducted representative sampling in this area in November 2020.A total of 13 surface water samples and 82 groundwater samples were collected.Combined with the Nanjing precipitation isotope data released by the Global Network of Isotopes in Precipitation(GNIP),the local meteoric water line(LMWL)equation of Nanjing is obtained according to the least square method:δD=8.49δ18O+17.71,and its slope and intercept are higher than the global meteoric water line(GMWL:δD=8δ18O+10).In the same way,the surface water line(SWL)equation:δD=5.07δ18O-15.37 and the groundwater line(GWL)equation:δD=5.68δ18O-6.28.It is found that the intercept and slope of the surface water are smaller than the groundwater,indicating the evaporation of surface water More intense than groundwater.Groundwater receives atmospheric precipitation and river water recharge.The analysis of the deuterium excess(d-excess)of surface water and groundwater shows that the precipitation recharge of the water bodies in this area is controlled by oceanic air masses. |
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| Keywords: | stable isotope precipitation surface water groundwater deuterium excess |
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