Application of an in-situ system for continuous monitoring of radionuclides in submarine groundwater sources
The application of an in-situ gamma-ray spectrometer for long-term measurements of natural radionuclides into groundwater emanating from submarine groundwater discharge (SGD) sources is described. The system (named KATERINA) has been developed for aquatic applications by Hellenic Centre for Marine Research and as a preliminary study it was deployed at three pilot SGD sites in Greece. After the initial deployment into the lake Tsivlou where background spectrum was obtained, the system was deployed for several hours in Hellenic coastal submarine groundwater sources at Chalkida, Stoupa and Korfos. The radon progenies activity concentration at Chalkida measured in a range from 1.2 to 1.3 Bq/L while at Stoupa from 2.4 to 2.6 Bq/L. Also, the concentration of the radon progenies in the region of Korfos varied from 1.4 to 2.3 Bq/L and an inversely linear dependency with salinity values was observed. The system monitoring radon progeny variations may contribute to hydrological studies concerning the transport, the emanation and the quantification of the groundwater using radiotracing techniques.
KeywordsCoastal Aquifer Natural Radionuclide Remote Operating Vehicle Radon Progeny Radium Isotope
Unable to display preview. Download preview PDF.
- Burnett WC, Aggarwal PK, Aureli A, Bokuniewicz H, Cable JE, Charette MA, Kontar E, Krupa S, Kulkarni KM, Loveless A, Moore WS, Oberdorfer JA, Oliveira J, Ozyurt N, Povinec P., Privitera AMG, Rajar R, Ramessur RT, Scholten J, Stieglitz T, Taniguchi M, Turner JV (2006) Quantifying submarine groundwater discharge in the coastal zone via multiple methods. Sci. Total Environ. 367, 498–543CrossRefGoogle Scholar
- Burnett WC, Peterson R, Moore WS, de Oliveira J (2008) Radon and radium isotopes as tracers of submarine groundwater discharge - Results from the Ubatuba, Brazil SGD assessment inter-comparison. Estuar. Coast. Shelf S. 76, 501-511Google Scholar
- Mathieu GG, Biscaye PE, Lupton RA, Hammond DE (1988) System for measurement of 222 Rn at low levels in natural waters. Health Phys. 55, 989-992Google Scholar