Evaluation of nitrate fluxes into a coastal lagoon through Submarine Groundwater Discharge (SGD)
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Submarine groundwater discharge in Northern Monterey Bay, California: Evaluation by mixing and mass balance models
Article history: Received 28 July 2015 Received in revised form 19 January 2016 Accepted 20 January 2016 Available online 26 January 2016 Monterey Bay, California (CA) receives nutrients from multiple sources, including river discharge, upwelling of deep water, and submarine groundwater discharge (SGD). Here we evaluate the relative importance of these sources to Northern Monterey Bay with a mi...
متن کاملMeasurement of submarine groundwater discharge in Kahana Bay, O‘ahu, Hawai‘i
Submarine groundwater discharge (SGD) is neither well understood nor commonly investigated in Hawai‘i, but it is recognized as a potential pollution source to coastal environments. Between 1998 and 2000, this study located and quantified both total SGD and the terrestrial SGD fraction ( ftgw) in Kahana Bay, O‘ahu. CTD casts were used to profile the water structure and identify potential areas o...
متن کاملCoupled radon, methane and nitrate sensors for large-scale assessment of groundwater discharge and non-point source pollution to coastal waters.
We constructed a survey system of radon/methane/nitrate/salinity to find sites of submarine groundwater discharge (SGD) and groundwater nitrate input. We deployed the system in Waquoit Bay and Boston Harbor, MA where we derived SGD rates using a mass balance of radon with methane serving as a fine resolution qualitative indicator of groundwater. In Waquoit Bay we identified several locations of...
متن کاملSubmarine Discharge of Nitrate Rich Groundwater into Port Jefferson Harbor, Long Island, NY
The fate of nitrogen entering Long Island Sound Embayments is dependent on both volume of submarine groundwater discharge (SGD) and geochemical transformations in the coastal aquifer. Previous work in Stony Brook Harbor revealed the importance of sediment composition in the subtidal and offshore areas of the harbor; SGD rate in the subtidal is higher than offshore areas, but experiences only 30...
متن کاملThe effect of submarine groundwater discharge on the ocean.
The exchange of groundwater between land and sea is a major component of the hydrological cycle. This exchange, called submarine groundwater discharge (SGD), is comprised of terrestrial water mixed with sea water that has infiltrated coastal aquifers. The composition of SGD differs from that predicted by simple mixing because biogeochemical reactions in the aquifer modify its chemistry. To emph...
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تاریخ انتشار 2016