锦州市小凌河扇地地表水与地下水水化学特征

为研究小凌河扇地的水化学特征与地表水—地下水的转化关系,在野外调查和取样的基础上,通过水化学和同位素方法,分析了小凌河扇地自山前至近海平原地表水与地下水的水化学及同位素特征、补给来源及局部差异.结果 表明,从山前地区至近海平原区,区内地下水低矿化度的HCOs-Ca型淡水逐步转变为Cl-Na型微咸水,地表水由HCO3·S...

Hydrochemical Characteristics of Surface Water and Groundwater in Xiaoling River Fan of Jinzhou City

In order to analyze the interaction between the surface water and groundwater of the Xiaoling River Fan, based on the field survey and sampling, hydrochemical characteristics, recharge sources and local differences of surface water and groundwater from the piedmont to the coastal plain in the Xiaoling River Fan were analyzed. The results show that from the piedmont area to the offshore plain, the groundwater type in the study area has gradually transitioned from low-salinity HCO₃-Ca freshwater to coastal Cl-Na brackish water. The surfer water type has gradually transitioned from HCO₃·SO₄-Ca·Mg, HCO₃·Cl-Na to Cl·SO₄-Na·Ca, Cl-Na type. The hydrogen and oxygen isotopes of groundwater and surface water are lower than the atmospheric precipitation line, indicating that atmospheric precipitation is the main source of replenishment. Surface water is strongly concentrated by evaporation. Affected by factors such as geological and hydrogeological conditions, there are certain spatial differences in the interaction between groundwater and surface water.