Submarine groundwater discharge (SGD) is an important process driven by marine and terrestrial forces. Low tide affects SGD the most, therefore the ideal time to detect SGD is the low tide, especially during spring tide. Techniques to detect and quantify SGD along with the understanding of the related aquifer characteristics is discussed in this study. Scientific community across the world is realizing the importance of studying and mapping SGD because in the scenario of climate change, this part of the global hydrological cycle is an important process and is known to have a significant effect on the marine ecosystem due to nutrient and metal inputs around the region of discharge. Therefore, understanding the processes governing SGD becomes very important. In this review, various components and processes related to SGD (e.g. Submarine Groundwater Recharge, Deep Porewater Upwelling, Recirculated Saline Groundwater Discharge), along with detailed discussion on impacts of SGD for marine ecosystem is presented. Also, it highlights the future research direction and emphasis is put on more research to be done keeping in mind the changing climate and its impacts on SGD.

海底地下水排放（SGD）是海洋和陆地力量推动的重要过程。退潮对SGD的影响最大，因此检测SGD的理想时间是退潮，尤其是在春季退潮期间。在这项研究中讨论了检测和定量SGD的技术以及对相关含水层特征的理解。全世界的科学界都意识到研究和绘制SGD的重要性，因为在气候变化的情况下，全球水文循环的这一部分是一个重要的过程，并且由于养分和金属元素，对海洋生态系统产生了重大影响放电区域周围的输入。因此，了解管理SGD的过程变得非常重要。在这篇评论中，与SGD相关的各种组件和流程（例如 提出了海底地下水补给，深部孔隙上升流，循环盐碱地下水排放），以及有关SGD对海洋生态系统影响的详细讨论。此外，它着重指出了未来的研究方向，并着重于进行更多的研究，同时牢记气候变化及其对SGD的影响。