Evidence of freshened groundwater below a tropical fringing reef
Evidence of freshened groundwater below a tropical fringing reef
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DOI：
10.1007/s10040-020-02191-1
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发表时间：
2020-06-27
影响因子：
2.8
通讯作者：
Silbiger, Nyssa J.
中科院分区：
文献类型：
--
作者：
Hagedorn, Benjamin;Becker, Matthew W.;Silbiger, Nyssa J.
海底地下水排放（SGD）被广泛认为是热带岛屿珊瑚礁环境变化的关键驱动因素。之前的工作已经解决了孤立海底泉水的 SGD 和地下水-珊瑚礁相互作用；然而，关于地下水向珊瑚礁排放的机制和分布仍然存在许多悬而未决的问题。为了了解地下水如何迁移到珊瑚礁，在法属波利尼西亚莫雷阿热带火山岛进行了一系列近海 (222)Rn（氡）和海底电阻率 (ER) 调查。这些调查表明，岸礁下面有较淡水的水，显然受到了
Submarine groundwater discharge (SGD) is widely acknowledged as a key driver of environmental change in tropical island coral reefs. Previous work has addressed SGD and groundwater-reef interactions at isolated submarine springs; however, there are still many outstanding questions about the mechanisms and distribution of groundwater discharge to reefs. To understand how groundwater migrates to reefs, a series of offshore(222)Rn (radon) and submarine electrical resistivity (ER) surveys were performed on the tropical volcanic island of Mo'orea, French Polynesia. These surveys suggest that fresher water underlies the fringing reef, apparently confined by a