Sea-level rise (SLR) is influencing coastal groundwater by both elevating the water table and shifting salinity profiles landward, making the subsurface increasingly corrosive. Low-lying coastal municipalities worldwide (potentially 1,546, according to preliminary analysis) are vulnerable to an array of impacts spurred by these phenomena, which can occur decades before SLR-induced surface inundation. Damage is accumulating across a variety of infrastructure networks that extend partially and fully beneath the ground surface. Because the resulting damage is largely concealed and imperceptible, it is largely overlooked as part of infrastructure management and planning. Here, we provide an overview of SLR-influenced coastal groundwater and related processes that have the potential to damage societally critical infrastructure and mobilize urban contamination. In an effort to promote research efforts that can inform effective adaptation and management, we discuss various impacts to critical infrastructure and propose actions based on literature focused specifically on SLR-influenced coastal groundwater.

中文翻译：

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隐藏的威胁：海平面上升对沿海地下水的影响以及对市政基础设施影响的趋同


海平面上升 （SLR） 通过抬高地下水位和向陆地移动盐度剖面来影响沿海地下水，使地下的腐蚀性越来越强。全球低洼沿海城市（根据初步分析，可能为 1,546 个）容易受到这些现象引发的一系列影响，这些影响可能发生在 SLR 引起的地表洪水之前几十年。损坏正在部分和全部延伸到地表以下的各种基础设施网络中积累。由于由此造成的损害在很大程度上是隐蔽且难以察觉的，因此作为基础设施管理和规划的一部分，它在很大程度上被忽视了。在这里，我们概述了受 SLR 影响的沿海地下水和相关过程，这些过程有可能破坏社会关键基础设施并动员城市污染。为了促进可以为有效适应和管理提供信息的研究工作，我们讨论了对关键基础设施的各种影响，并根据专门针对受 SLR 影响的沿海地下水的文献提出了行动。