1. Department of Physics and Astronomy; University of Western Ontario; London Ontario N6A3K7 Canada
2. Centre for Planetary Science and Exploration; University of Western Ontario; London Ontario N6A 5B7 Canada
3. NASA Spring Intern Program; NASA Marshall Space Flight Center; Huntsville Alabama 35812 USA
4. Department of Physics; Brandeis University; Waltham Massachusetts 02454 USA
5. MITS/Dynetics Technical Services; NASA Marshall Space Flight Center; Huntsville Alabama 35812 USA
6. Meteoroid Environments Office; EV44, Space Environment Team; Marshall Space Flight Center; Huntsville Alabama 35812 USA