+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Submarine groundwater discharge estimates at a Florida coastal site based on continuous radon measurements



Submarine groundwater discharge estimates at a Florida coastal site based on continuous radon measurements



Biogeochemistry 66(1-2): 55-73



The direct discharge of groundwater into the coastal zone has received increased attention in the last few years as it is now recognized that this process represents an important pathway for material transport. Assessing these material fluxes is difficult, as there is no simple means to gauge the water flux. We estimated the changing flux of groundwater discharge into a coastal area in the northeast Gulf of Mexico (Florida) based on continuous measurements of radon concentrations over a several day period. Changing radon inventories were converted to fluxes after accounting for losses due to atmospheric evasion and mixing. Radon fluxes are then converted to groundwater inflow rates by estimating the radon concentration of the fluids discharging into the study domain. Groundwater flow was also assessed via seepage meters, radium isotopes, and modeling during this period as part of an "intercomparison" study. The radon results suggest that the flow is: (1) highly variable with flows ranging from X5 to 50 cm/day; and (2) strongly influenced by the tides, with spikes in the flow every 12 hours. The discharge estimates and pattern of flow derived from the radon model matches the automated seepage meter records very closely.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 004335314

Download citation: RISBibTeXText

DOI: 10.1023/b:biog.0000006057.63478.fa


Related references

Extended time series measurements of submarine groundwater discharge tracers 222Rn and CH4 at a coastal site in Florida. Marine Chemistry 113(1-2): 137-147, 2009

Radium and radon radioisotopes in regional groundwater, intertidal groundwater, and seawater in the Adelaide Coastal Waters Study area Implications for the evaluation of submarine groundwater discharge. Marine Chemistry 109(3-4): 318-336, 2008

Radon tracing of submarine groundwater discharge in coastal environments. Pages 25-43 2003, 2003

Submarine groundwater discharge to a small estuary estimated from radon and salinity measurements and a box model. Biogeosciences 2(2): 141-157, 2005

Development of a submarine radon monitor for investigations of groundwater discharge to the coastal zone and evaluation of potential earthquakes. Proceedings of, 1999

Geochemical and physical sources of radon variation in a subterranean estuary - Implications for groundwater radon activities in submarine groundwater discharge studies. Marine Chemistry 110(1-2): 120-127, 2008

Submarine groundwater discharge to Salt Pond (MA) estimated from continuous 222Rn measurements. Eos, Transactions, American Geophysical Union 85(47, Suppl, 2004

Calibration and use of continuous heat-type automated seepage meters for submarine groundwater discharge measurements. Estuarine, Coastal And Shelf Science: 1, 1-10, 2010

Estimating the dynamics of groundwater input into the coastal zone via continuous radon-222 measurements. Journal of Environmental Radioactivity 69(1-2): 21-35, 2003

Land or ocean? Assessing the driving forces of submarine groundwater discharge at a coastal site in the Gulf of Mexico. Journal of Geophysical Research 114.C4, 2009

Determination of the hydraulic properties of sub-sea formations using continuous measurements of pore pressure at submarine-groundwater-discharge area. Eos, Transactions, American Geophysical Union 85(47, Suppl, 2004

Measurements of submarine groundwater discharge rates by a continuous heat-type automated seepage meter in Osaka Bay, Japan. Journal of Groundwater Hydrology 43(4): 271-277, 2001

An automated dye-dilution based seepage meter for the time-series measurements of submarine groundwater discharge. Limnology and Oceanography, Methods 1(Pages 16-28, 2003

Continuous measurements of radon concentration in groundwater at the Fuchu crustal activity observatory site, Tokyo. Jishin Yochi Renrakukai Kaiho = Report of the Coordinating Committee for Earthquake Prediction 27: 136-138, 1982

Utility of radon-222 as a tracer of submarine groundwater discharge to Waquoit Bay, MA. Abstracts with Programs - Geological Society of America 33(6): 195, 2001