Articles | Volume 10, issue 2
https://doi.org/10.5194/se-10-405-2019
https://doi.org/10.5194/se-10-405-2019
Research article
 | 
22 Mar 2019
Research article |  | 22 Mar 2019

Submarine groundwater discharge site in the First Salpausselkä ice-marginal formation, south Finland

Joonas J. Virtasalo, Jan F. Schröder, Samrit Luoma, Juha Majaniemi, Juha Mursu, and Jan Scholten

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Cited articles

Andersen, J. H., Carstensen, J., Conley, D. J., Dromph, K., Fleming-Lehtinen, V., Gustafsson, B. G., Josefson, A. B., Norkko, A., Villnäs, A., and Murray, C.: Long-term temporal and spatial trends in eutrophication status of the Baltic Sea, Biol. Rev., 92, 135–149, https://doi.org/10.1111/brv.12221, 2017. 
Andrews, J. N. and Wood, D. F.: Mechanism of radon release in rock matrices and entry into groundwaters, T. I. Min. Metall. B, 81, 197–209, 1972. 
Annan, A. P.: Electromagnetic principles of ground penetrating radar, in: Ground Penetrating Radar: Theory and Applications, edited by: Jol, H. M., Elsevier, Amsterdam, the Netherlands, 3–40, 2009. 
Bengtsson, L. and Enell, M.: Chemical analysis, in: Handbook of Holocene Palaeoecology and Palaeohydrology, edited by: Berglund, D. E., Wiley, Chichester, UK, 423–451, 1986. 
Bear, J.: Dynamics of fluids in porous media, Elsevier, New York, USA, 756 pp., 1972. 
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Short summary
This study establishes the local stratigraphy and 3-D aquifer geometry of a submarine groundwater discharge site in the Hanko Peninsula, south Finland. The study is based on a rich dataset of marine seismic profiles, multibeam and side-scan sonar images of the seafloor, and onshore ground-penetrating radar and refraction seismic profiles. The groundwater discharge takes place through metre-scale pockmarks on the seafloor, confirmed by elevated radon concentrations in the overlying water.