Susuz karst aquifer is a mountainous and highly karstified aquifer located at the Central Taurus karst belt, Seydişehir, Türkiye. Pınarbaşı karst spring is a major water resource of the Susuz karst aquifer which drains approximately 15 million m of water annually, mostly between January and July. As the Pınarbaşı spring dries up for the rest of the year, local water needs frequently emerge during the dry periods, especially for animal livestock and domestic usage. However, one major problem in the karst region is the decreasing trend in the spring discharge rate and increasing length of the dry period due to the impact of climate change. For this reason, to reduce the climate impact on the karst aquifer it is essential to explore alternative engineering solutions where they are applicable. This study proposes the construction of a cave dam in the Susuz karst system to retain and store groundwater during the dry period. Based on the accumulated hydrogeological knowledge and experiences in the karst region, we first conceptualized the cave dam construction and then indicated the positive influence of the stored groundwater under changing climate considering two main climate scenarios (SSP245 and SSP585). Our findings indicate that the (proposed) cave dam potentially stores 4 million m of water, which represents nearly 35 % of the mean annual spring discharge under current climate conditions. This amount is expected to rise over 50 % of the total discharge in future climate conditions.

中文翻译：

---

通过建造洞穴坝减少气候对喀斯特地下水资源的影响。土耳其中部金牛座喀斯特地区的案例研究

苏苏兹喀斯特含水层是一个多山的高度喀斯特含水层，位于土耳其塞迪谢希尔金牛座喀斯特带中部。 Pınarbaşı 喀斯特泉水是 Susuz 喀斯特含水层的主要水资源，每年排出约 1500 万立方米的水，大部分是在一月至七月之间。由于皮纳尔巴西 (Pınarbaşı) 泉水在一年中的剩余时间里逐渐干涸，当地在干旱期间经常需要用水，特别是牲畜和家庭用水。然而，受气候变化影响，岩溶地区面临的一大问题是春季流量减少、干旱期延长。因此，为了减少气候对岩溶含水层的影响，必须探索适用的替代工程解决方案。本研究建议在苏苏兹喀斯特系统中建造一座洞穴坝，以在干旱时期保留和储存地下水。基于喀斯特地区积累的水文地质知识和经验，我们首先概念化了洞穴坝建设，然后考虑两种主要气候情景（SSP245和SSP585），指出了气候变化下储存的地下水的积极影响。我们的研究结果表明，（拟议的）洞穴大坝可能储存 400 万立方米的水，相当于当前气候条件下每年平均泉水流量的近 35%。在未来的气候条件下，预计这一数量将占总排放量的 50% 以上。