1. Department of Physics Augsburg University Minneapolis MN USA
2. Department of Mechanical Engineering University of Minnesota, Twin Cities Minneapolis MN USA
3. British Antarctic Survey NERC Cambridge UK
4. Department of Physics University of Otago Dunedin New Zealand
5. Space Science and Applications Group Los Alamos National Laboratory Los Alamos NM USA
6. Space Science Center University of New Hampshire Durham NH USA
7. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA