Affiliation: | aSchool of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK;bInstitute of Geosciences, University of Potsdam, P.O.B. 601553, 14415 Potsdam, Germany;cDepartment of Geophysics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland |