William C. Burnett, Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, USA.
Thailand Institute of Nuclear Technology, 9/9 Moo 7, Sai Mun, Ongkharak, Nakhon Nayok, 26120, Thailand.
Mar Pollut Bull. 2019 Nov;148:75-84. doi: 10.1016/j.marpolbul.2019.07.071. Epub 2019 Aug 6.
We explored the possibility that an underground pathway, "submarine groundwater discharge" (SGD), may contribute to the observed coastal contamination from a large industrial complex on the Gulf of Thailand. Three surveys were performed to map the area for the natural groundwater tracers radon, thoron and salinity. The results from all three surveys were internally consistent showing a point source adjacent to a large pier that serves the complex. It may be that a piling, driven into the ground to support the pier, intercepted a shallow aquifer and this resulted in an underground pathway between land and sea. Some low-density sediments are enriched in radium, we suspect from fly ash from a nearby power plant. Water quality parameters showed that total petroleum hydrocarbons (TPHs) correlated strongly to nitrite, dissolved inorganic phosphate and silica, indicating a common source. Data analysis shows that diffuse seepage accounts for more discharge than the point source.
我们探讨了一种可能性，即地下通道“海底地下水排放”（SGD）可能导致从泰国湾一个大型工业综合体观察到的沿海污染。进行了三次调查，以绘制用于天然地下水示踪剂氡、钍和盐度的地图。所有三次调查的结果都具有一致性，显示出一个紧邻大型码头的点源，该码头为该综合体服务。可能是打入地面以支撑码头的桩拦截了浅层含水层，从而在陆地和海洋之间形成了地下通道。一些低密度沉积物富含镭，我们怀疑这是附近发电厂的飞灰造成的。水质参数表明，总石油烃（TPHs）与亚硝酸盐、溶解无机磷酸盐和硅酸钠强烈相关，表明存在共同来源。数据分析表明，扩散渗漏的排放量大于点源。
