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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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.