1. Department of Geophysics; Stanford University; Stanford; California; USA
2. Department of Geological Sciences; Cornell University; Ithaca; New York; USA
3. GeoForschungsZentrum Potsdam (GFZ); Potsdam; Germany
4. Institute of Geoscience; Kiel University; Kiel; Germany
5. Geological Institute; University of Copenhagen; Denmark
6. Chinese Academy of Geological Sciences; Beijing; China