Closed-form analytical solutions for assessing the consequences of climate change on fresh groundwater oceanic island lenses have been developed by hydrogeologists during the last decade. Based on existing equations, this study focuses on the case of strip oceanic islands when three combined effects of climate change are observed to affect the freshwater lens volume and its groundwater resource renewal: sea-level rise, erosion, and change in groundwater recharge rates. New equations, integrating these combined effects of climate change on fresh groundwater resources are provided. These equations are solved by a novel methodology based on a Dupuit-Forchheimer groundwater flow model that allows for determination of the hydrogeological parameters included in the equations. The approach is illustrated with the strip island of Savary, which is located along the Pacific Coast of Canada in the province of British Columbia. This example illustrates, on the one hand, the volume depletion of the island freshwater lens and, on the other hand, the decrease of the renewal rate of groundwater. The proposed approach can be applied to any strip islands worldwide to assess the cumulative effects of sea-level rise and shore erosion on groundwater resources, depending on the predicted climate change scenarios. The results can then help decision-makers to anticipate the effects of climate change on the groundwater availability in strip oceanic islands and plan future groundwater use accordingly.

在过去的十年中，水文地质学家已经开发出用于评估气候变化对淡水海洋岛屿透镜影响的封闭式分析解决方案。基于现有方程，本研究着重于带状海洋岛的情况，当观察到气候变化的三种综合影响影响淡水透镜体体积及其地下水资源更新：海平面上升，侵蚀和地下水补给率变化。提供了新的方程式，将气候变化对新鲜地下水资源的这些综合影响整合在一起。这些方程是通过基于Dupuit-Forchheimer地下水流模型的新颖方法求解的，该方法可以确定方程中包含的水文地质参数。萨瓦里（Savary）的带状岛说明了这种方法 位于加拿大不列颠哥伦比亚省的加拿大太平洋沿岸。这个例子一方面说明了岛屿淡水晶状体的体积枯竭，另一方面说明了地下水更新速率的降低。所提议的方法可以应用于全球任何带状岛屿，以根据预测的气候变化情景评估海平面上升和海岸侵蚀对地下水资源的累积影响。然后，这些结果可以帮助决策者预测气候变化对海洋带状岛屿地下水可供量的影响，并据此计划未来的地下水使用量。地下水更新率下降。所提议的方法可以应用于全球任何带状岛屿，以根据预测的气候变化情景评估海平面上升和海岸侵蚀对地下水资源的累积影响。然后，这些结果可以帮助决策者预测气候变化对海洋带状岛屿地下水可供量的影响，并据此计划未来的地下水使用量。地下水更新率下降。所提议的方法可以应用于全球任何带状岛屿，以根据预测的气候变化情景评估海平面上升和海岸侵蚀对地下水资源的累积影响。然后，这些结果可以帮助决策者预测气候变化对海洋带状岛屿地下水可供量的影响，并据此计划未来的地下水使用量。