莱州湾南岸海底地下水交换量研究

相对于定性研究海水入侵的程度及规律, 定量研究能更直观的给出海水入侵地区的 SGD( Submarine groundwater discharge) 以及流入量。选择潍坊昌邑市北部潮间带地区, 布设 3 km 长监测剖面, 通过监测地下水水位、水 温、以及电导率数据, 运用数学方法定量估算海底地下水交换量。同时, 运用计算所得结果, 对研究区海水入侵情况进行评估, 为将来该地区地下水监测提供科学依据。计算结果表明, 潮间带流入量明显大于流出量, 海水呈现朝陆推进趋势。 Compared with the qualitative study of seawater intrusion, the quantitative study can give a more direct description of the submarine groundwater discharge and inflow in the seawater intrusion area. We set up a 3-km-long monitoring section in an intertidal zone located in the north of Changyi City of Weifang. According to the data of groundwater level, water temperature, and conductivity, we conducted a quantitative estimation of the submarine groundwater exchange capacity by mathematical methods. The results of the calculation were used to evaluate the trend of seawater intrusion in the study area, and to provide a scientific basis for future groundwater monitoring in the area. The results showed that the inflow in the intertidal zone was obviously larger than the outflow , so the seawater is showing a trend of landward intrusion. 中国地质调查项目( 1212011303800)