title: Estimation of coastal residence time of submarine groundwater discharge using radium progenies.
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.
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 712, GR-19013 Anavyssos, Greece. Electronic address: geoelefthe@gmail.com.
authors.forename: G
authors.initials: G
authors.lastname: Eleftheriou
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 712, GR-19013 Anavyssos, Greece.
authors.forename: C
authors.initials: C
authors.lastname: Tsabaris
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 712, GR-19013 Anavyssos, Greece.
authors.forename: D L
authors.initials: DL
authors.lastname: Patiris
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 712, GR-19013 Anavyssos, Greece; National Technical University of Athens, Department of Physics, Zografou Campus, GR-15780 Athens, Greece.
authors.forename: E G
authors.initials: EG
authors.lastname: Androulakaki
authors.affiliation: National Technical University of Athens, Department of Physics, Zografou Campus, GR-15780 Athens, Greece.
authors.forename: R
authors.initials: R
authors.lastname: Vlastou
keywords: (224)Ra/(228)Ra; MDA; Residence time; SGD; Stoupa Bay; in situ; γ-spectrometry