Mobile underwater in situ gamma-ray spectroscopy to localize groundwater emanation from pockmarks in the Eckernförde bay, Germany

Dionisis L Patiris; Christos Tsabaris; Mark Schmidt; Aristomenis P Karageorgis; Aristides M Prospathopoulos; Stylianos Alexakis; Peter Linke

doi:10.1016/j.apradiso.2018.07.037

Mobile underwater in situ gamma-ray spectroscopy to localize groundwater emanation from pockmarks in the Eckernförde bay, Germany

Appl Radiat Isot. 2018 Oct:140:305-313. doi: 10.1016/j.apradiso.2018.07.037. Epub 2018 Aug 1.

Authors

Dionisis L Patiris¹, Christos Tsabaris², Mark Schmidt³, Aristomenis P Karageorgis², Aristides M Prospathopoulos², Stylianos Alexakis², Peter Linke³

Affiliations

¹ Institute of Oceanography, Hellenic Centre for Marine Research, Anavyssos, 46.7 km Athens Sounio ave., P.O. Box 712, Attiki, 19013, Greece. Electronic address: dpatiris@hcmr.gr.
² Institute of Oceanography, Hellenic Centre for Marine Research, Anavyssos, 46.7 km Athens Sounio ave., P.O. Box 712, Attiki, 19013, Greece.
³ GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstr. 1-3, 24148 Kiel, Germany.

PMID: 30114617
DOI: 10.1016/j.apradiso.2018.07.037

Abstract

Eckernförde Bay in the Baltic Sea is well-known for the pockmarks areas which are located in the centre and off the southern shore-line of the bay emanating groundwater in a non-continuous but episodic way. Mobile underwater in situ gamma-ray spectroscopy is exploited proving that both ²¹⁴Bi and ⁴⁰K are efficient radiotracers for localization of seepage areas whenever either sediment is in mixture with the emanating fluid or resuspension of surface sediment occurs as a side effect of the fluid emanation.

Keywords: Eckernförde Bay; In situ gamma-ray spectroscopy; Pockmarks; Radiotracers; Radon; Submarine groundwater discharge.