*Paul Prikryl^1,2、Reza Ghoddousi-Fard³、Martin Connors⁴、James M. Weygand⁵、Donald W. Danskin²、P. Thayyil Jayachandran¹、Knut Stanley Jacobsen⁶、Yngvild Linnea Andalsvik⁶、Evan G. Thomas⁷、Mike Ruohoniemi⁷、Tibor Durgonics⁸、Kjellmar Oksavik^9,10、Yongliang Zhang¹¹、Marcio Aquino¹²、V. Sreeja¹² (1.Physics Dept., University of New Brunswick, Fredericton, NB, Canada、2.Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada、3.Canadian Geodetic Survey, Natural Resources Canada, Ottawa, ON, Canada、4.Athabasca University, Edmonton, AB, Canada、5.Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA、6.Norwegian Mapping Authority, Hønefoss, Norway、7.Bradley Dept. of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, USA、8.Technical University of Denmark, National Space Institute, Kongens Lyngby, Denmark、9.Birkeland Centre for Space Science, Dept. of Physics and Technology, Univ. of Bergen, Bergen, Norway、10.The University Centre in Svalbard, Longyearbyen, Norway、11.Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA、12.Nottingham Geospatial Institute, University of Nottingham, Nottingham, UK)