1 Introductory and Background Material

Axford, 1961, A unifying theory of high-latitude geophysical phenomena and geomagnetic storms, Can. J. Phys., 39, 1433, 10.1139/p61-172 Banks, 1973 Baron, 1974, Electron densities within auroras and other auroral E-region characteristics, Radio Sci., 9, 341, 10.1029/RS009i002p00341 Chen, 1984, vol. 1 Dungey, 1961, Interplanetary magnetic field and the aurorae zones, Phys. Rev. Lett., 6, 47, 10.1103/PhysRevLett.6.47 Iioannidis, 1974, High resolution D-region measurements at Arecibo, Radio Sci., 9, 151, 10.1029/RS009i002p00151 Istomin, 1966, Observational results on atmospheric ions in the region of the outer ionosphere, Ann. Geophys., 22, 255 Johnson, 1969, Ion and neutral composition of the ionosphere, Ann. IQSY, 5 Kelley, 1978, Evidence for two-dimensional inertial turbulence in a cosmic-scale low β -plasma, Astrophys. J., 220, 339, 10.1086/155911 Kivelson, 1995 Lyons, 1984 Mechtly, 1972, Changes of lower ionosphere electron concentrations with solar activity, J. Atmos. Terr. Phys., 34, 1899, 10.1016/0021-9169(72)90065-7 Narcisi, 1972, Ion composition measurements in the lower thermosphere during the November 1966 and March 1970 solar eclipses, J. Atmos. Terr. Phys., 34, 647, 10.1016/0021-9169(72)90152-3 Reber, 1965, Investigation of the major constituents of the April–May 1963 heterosphere by the Explorer XVII satellite, Planet. Space Sci., 13, 617, 10.1016/0032-0633(65)90043-7 Reid, 1970, Production and loss of electrons in the quiet daytime D region of the ionosphere, J. Geophys. Res., 75, 2551, 10.1029/JA075i013p02551 Rishbeth, 1969, vol. 14 Robinson, 1989, A comparison of ionospheric conductances and auroral luminosities observed simultaneously with the Chatanika radar and the de-1 auroral imagers, J. Geophys. Res., 94, 5382, 10.1029/JA094iA05p05382 Schunk, 2000 Thomas, 1974, Recent developments and outstanding problems in the theory of the D region, Radio Sci., 9, 121, 10.1029/RS009i002p00121