1. British Antarctic Survey (NERC) Cambridge UK
2. Department of PhysicsUniversity of Otago Dunedin New Zealand
3. Department of Earth and Space SciencesUniversity of Washington Seattle Washington USA
4. Department of Physics and AstronomyDartmouth College Hanover New Hampshire USA
5. Space Sciences LaboratoryUniversity of California Berkeley California USA
6. Geomagnetic LaboratoryNatural Resources Canada Ottawa Ontario Canada