1. Space Sciences Laboratory University of California Berkeley California USA
2. Department of Physics Purdue University West Lafayette Indiana USA
3. Department of Physics & Astronomy San Jose State University San Jose California USA
4. Stanford University Stanford California USA
5. NSF Arizona AMS Laboratory University of Arizona Tucson Arizona USA
6. Department of Geology Case Western Reserve University Cleveland Ohio USA
7. Geology & Geophysics University of Utah Salt Lake City Utah USA