Freeman, M. P. (NERC British Antarctic Survey, Cambridge, United Kingdom)
Farrugia, C. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Burlaga, L. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hairston, M. R. (Texas Univ. Richardson, United States)
Greenspan, M. E. (Maryland Univ. College Park, United States)
Ruohoniemi, J. M. (Johns Hopkins Univ. Laurel, MD, United States)
Lepping, R. P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)