Groundwater inputs, coastal ocean

Slomp, C. P., and Van CapeUen, P. (2004). Nutrient inputs to the coastal ocean through submarine groundwater discharge controls and potential impact. J. Hydrol. 295, 64—86. 

Devol, 2002), their isotopic compositions are very poorly constrained and may in fact be distinct from the N introduced by oceanic N2 fixation. There is currently a need for a systematic study of the isotopic composition ofN inputs to the ocean from rivers and groundwater that takes into account the multiple chemical forms of N involved as well as the reactions that occur as rivers deposit N into the coastal ocean. Terrestrial... 

The majority of runoff from land to the oceans is dominated by riverine inputs, with minimal inputs directly from groundwater runoff. However, recent work has shown that SGD into estuaries and coastal waters is more significant than previously thought and may have significant impacts on the cycling of nutrients and contaminants. 

Inputs of nutrient N and P to the coastal zone which support new primary production are from the land by riverine and groundwater flows, from the open ocean by coastal upwelling and onwelling, and to a lesser extent by atmospheric deposition of nitrogen. New primary production depends on the... 

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