Institution: | aDepartment of Geosciences, University of Kiel, Olshausenstrasse 40, 24098 Kiel, Germany bCurrent address: WITec Wissenschaftliche Instrumente und Technologie GmbH, Hörvelsinger Weg 6, 89081 Ulm, Germany cGeophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, USA |