Submarine Groundwater Discharge Into the Sea and Associated Nutrient Transport in a Sandy Beach

Uchiyama, Yusuke; Adachi, Kumiko; Nadaoka, Kazuo; Yagi, Hiroshi; Rölke, Peter

doi:10.2208/jscej.1999.635_127

Cited by 30 publications

(32 citation statements)

References 17 publications

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“…In addition, vertical conductivities at this site are 1-2 order of magnitudes lower than the horizontal conductivities (Smith and Zawadzki, 2003). Finally, modeling investigations demonstrated small vertical advection compared to horizontal fluxes at other sandy beaches (Uchiyama et al, 2000).…”

Section: Non-steady-state Box Modelmentioning

confidence: 73%

Tidal pumping drives nutrient and dissolved organic matter dynamics in a Gulf of Mexico subterranean estuary

Santos

Burnett

Dittmar

et al. 2009

Geochimica et Cosmochimica Acta

251

163

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Section: Non-steady-state Box Modelmentioning

confidence: 73%

Tidal pumping drives nutrient and dissolved organic matter dynamics in a Gulf of Mexico subterranean estuary

Santos

Burnett

Dittmar

et al. 2009

Geochimica et Cosmochimica Acta

251

163

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“…Kaleris et al (2002) simulated the net groundwater discharge to the sea using MODFLOW (McDonald and Harbaugh, 1998). Uchiyama et al (2000) considered the effect of tidal fluctuations on SGD in a combined field and numerical modelling study.…”

Section: Introductionmentioning

confidence: 99%

Tidal influence on behaviour of a coastal aquifer adjacent to a low-relief estuary

Mao

Enot

Barry

et al. 2006

Journal of Hydrology

136

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“…An application of a cell model is given by Uchiyama et al (2000), who investigated the nutrient concentration in the near shore sea due to SGWD. They found that the long-term pollutant concentration depends on the relationship between the pollutant fluxes due to SGWD and the exchange flux between the near shore sea and the open ocean.…”

Section: Mixing With Sea Watermentioning

confidence: 99%

Submarine groundwater discharge (SGWD): an unseen yet potentially important coastal phenomenon in Canada

2011

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Both terrestrial and fresh or marine forces drive underground fluid flows in the coastal zone. Hydraulic gradients on land result in groundwater seepage near shore and may contribute to flows from confined aquifers further out on the shelf. The terrestrial and oceanic forces overlap spatially, so measured fluid advection through coastal sediments may be a result of composite forcing. ''Subsurface/submarine groundwater discharge'' (SGWD) can be defined as any and all flow of water on continental margins from the seabed to the coast, regardless of fluid composition or driving force. SGWD is typically characterized by low specific flow rates, making detection and quantification difficult. However, because such flows occur over very large areas, the total flux is significant. Discharging fluids, whether derived from land or composed of re-circulated seawater, will react with sediment components. These reactions may substantially increase the concentrations of nutrients, carbon, and metals in the fluids. These fluids are thus a source of biogeochemically important constituents to the coast. Terrestrially derived fluids represent a pathway for the flux of new material to the coast. This may result in diffuse pollution in areas where the discharge of contaminated groundwater occurs. This review presents an historical context of SGWD studies, defines the process in a form that is consistent with our current understanding of the driving forces as well as our assessment techniques, and reviews the estimated global fluxes and biogeochemical implications. This review concludes that, to fully characterize marine geochemical budgets, one must give due consideration to SGWD. New methodologies, technologies, and modeling approaches are required to discriminate among the various forces that drive SGWD, pollutants to evaluate these fluxes more precisely to Canadian coast.

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Submarine Groundwater Discharge Into the Sea and Associated Nutrient Transport in a Sandy Beach

Cited by 30 publications

References 17 publications

Tidal pumping drives nutrient and dissolved organic matter dynamics in a Gulf of Mexico subterranean estuary

Tidal pumping drives nutrient and dissolved organic matter dynamics in a Gulf of Mexico subterranean estuary

Tidal influence on behaviour of a coastal aquifer adjacent to a low-relief estuary

Submarine groundwater discharge (SGWD): an unseen yet potentially important coastal phenomenon in Canada

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