Estimation of coastal residence time of submarine groundwater discharge using radium progenies. (March 2017)

• Record Type: Journal Article
• Authors: Eleftheriou, G.; Tsabaris, C.; Patiris, D.L.; Androulakaki, E.G.; Vlastou, R.
• Is Part Of: Applied radiation and isotopes. Volume 121(2017:Mar.)
• Page Start: 44
• Page End: 50
• Publication Date: 2017-03
• Subjects: Residence time -- SGD -- 224Ra/228Ra -- γ-spectrometry -- MDA -- in situ -- Stoupa Bay; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2016.12.021
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: A methodology based on γ-spectrometry measurements of untreated coastal water samples is proposed for the direct estimation of coastal residence time of submarine discharged groundwater. The method was applied to a submarine spring at Stoupa Bay covering all seasons. The estimated residence time exhibited an annual mean of 4.6±1.7 d. An additional measurement using the in situ underwater γ-spectrometry technique was performed, in the same site. The in situ method yielded a value of 2.8±0.2 d that was found consistent with the corresponding value derived using the developed lab-based method (3.4±2.0 d) for the same period. Highlights: A γ-spectrometry based method for the SGD's residence time estimation is proposed. The methodology was successfully applied to a submarine spring at Stoupa Bay, Greece. The lab and in situ version of the method were consistent with each other. The limitations and perspectives of the applied methodology are discussed.