Holger SteffenHolger Steffen is a geophysicist by training who joined the Geodetic Infrastructure Department at Lantmäteriet, the Swedish Mapping, Cadastral and Land Registration Authority in 2012 after working for several years as a postdoctoral researcher at uniersities in Germany, Canada and Sweden. His work deals with glacial isostatic adjustment modelling, and corresponding acquisition and/or analysis of geodetic, geophysical and geologic observations. He chairs the Working Group of Geodynamics and Earth Observation of the Nordic Geodetic Commission. Read More Read Less