海岸带海底地下水排放估算

Submarine groundwater discharge (SGD) is an important part of interactions between sea and land. Also it is an important section of the worldwide water circulation. Relative research reveals that it serves as a significant pathway for land nutrients and pollutants to the coastal ocean. So it can severely influence material and energy inputs to the ocean system, and nearshoreneritic maritime space environment. American, Japan and many other countries attach more and more attention to the study on SGD. But in our country, relative research in this field is still blankness, we seldom examine submarine groundwater discharge. This paper provides three basic approaches to the SGD flux, including tracer techniques, direct measurements and modeling techniques. There about modeling techniques, this paper concentrate on four approaches: Darcy’s Law and Dupuit-Ghyben-Herzberg formula, water balance approaches, hydrograph separation techniques and numerical simulations. This paper also present their tendency in detail.