Institute for Geophysics and Meteorology, University of Cologne, Zulpicher Strasse 49a, Cologne, 50923, Germany; Institute for Theoretical Physics, TU Braunschweig, Mendelssohnstrasse 3, Braunschweig, 38106, Germany
Institute for Theoretical Physics, TU Braunschweig, Mendelssohnstrasse 3, Braunschweig, 38106, Germany
Institute for Theoretical Physics, TU Braunschweig, Mendelssohnstrasse 3, Braunschweig, 38106, Germany
Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Mendelssohnstrasse 3, Braunschweig, 38106, Germany
Institute for Geophysics and Meteorology, University of Cologne, Zulpicher Strasse 49a, Cologne, 50923, Germany
Institute of Geophysics and Planetary Physics, University of California, 6863 Slichter Hall, Los Angeles, 90095, USA
The Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2 AZ, United Kingdom