Time-series sampling of 223Ra and 224Ra at the inlet to Great South Bay (New York): a strategy for characterizing the dominant terms in the Ra budget of the bay

Journal of Environmental Radioactivity
Jordi Garcia-OrellanaA Beck

Abstract

Ra isotopes are a powerful tool for quantifying the flux of submarine groundwater discharge (SGD) into the sea. Previous studies of 223Ra and 224Ra mass balances in coastal embayments have shown that the Ra balance is dominated by supply via SGD, exchange with the open ocean and radioactive decay. The current study shows that a single time series over a tidal cycle at the principal inlet to Great South Bay (NY, US) is sufficient to determine the net flux of Ra across the inlet, and also can be used to estimate the decay of short-lived Ra in the bay. Estimates of the net Ra flux obtained from a single tidal time-series by using three different approaches agree with those determined from a more time-consuming survey of Ra within the bay, and may represent a first step of estimating SGD in bays and coastal lagoons.

References

Jun 30, 2006·The Science of the Total Environment·W C BurnettJ V Turner
Jun 2, 2007·Environmental Science & Technology·Sharon E BoneMeagan Eagle Gonneea

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Citations

May 15, 2010·Journal of Environmental Radioactivity·Aaron J BeckJ Kirk Cochran
Nov 2, 2018·Proceedings. Biological Sciences·Jesper G SørensenSteven L Chown
Feb 24, 2018·British Dental Journal·G WrightS B Mehta

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