海底地下水排泄的研究进展

A Review on Submarine Groundwater Discharge

海底地下水排泄(SGD)是全球水循环的一个重要组成部分,是陆—海相互作用的研究热点。首先分析了海底地下水排泄的组成和驱动力,总结了海底地下水排泄的主要评价方法及其优缺点;其次阐述了海底地下水排泄向海洋输送溶解物质的重要作用及其对海洋生态环境的影响,并通过剖析咸淡水混合带的地球化学过程,指出地下河口在研究海底地下水排泄中的重要地位;最后给出未来海底地下水排泄的研究方向。

Submarine Groundwater Discharge （ SGD）, an important part of global water cycle, is recently recognized as a research highlight on the land-ocean interaction in the coastal zone. Firstly, This paper analyzes the components and driving force of SGD, and summarizes the main estimating methods of SGD and its individual strengths and weaknesses. Secondly, the paper describes the important role of SGD in transporting dissolved mass into the costal ocean and significant impacts on the ecological environment of costal ocean, and through analyzing the biogeochemical process in the mixing zone of fresh-salt water, indicates the important position of subterranean estuary in studying submarine groundwater discharge. Finally, the paper points out the major problems currently existing in SGD research, then presents the future research direction.