Emma C Smith¹, Olaf Eisen^1,2, Anja Diez³, Coen M Hofstede¹, Reinhard Drews⁴, Todd Alan Ehlers⁴, Dieter Franke⁵, Christoph Gaedicke⁵, Gerhard Kuhn⁶, Astrid Lambrecht⁷, Christoph Mayer⁷ and Ralph Tidemann^1,2, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research (AWI), Division of Geosciences, Bremerhaven, Germany, (2)University of Bremen, Department of Geosciences, Bremen, Germany, (3)Norwegian Polar Institute, Tromsø, Norway, (4)University of Tübingen, Department of Geosciences, Tübingen, Germany, (5)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research (AWI), Bremerhaven, Germany, (7)Bavarian Academy of Sciences and Humanities, Geodesy and Glaciology, Munich, Germany