1. Institute of Geosciences Christian‐Albrechts‐Universität Kiel Germany
2. National Research Institute of Astronomy and Geophysics (NRIAG) Helwan, Cairo Egypt
3. School of Cosmic Physics, Geophysics Section Dublin Institute for Advanced Studies Dublin Ireland
4. GEOMAR Helmholtz Centre for Ocean Research Kiel Germany
5. Deutsches GeoForschungsZentrum (GFZ) Potsdam Germany