@article{oai:nipr.repo.nii.ac.jp:00004142,
 author = {Ishii, Mamoru and Sugiura, Masahisa and Iyemori, Toshihiko and Slavin, James A.},
 journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics},
 month = {Feb},
 note = {P(論文), There is generally high correlation between the orthogonal magnetic and electric field perturbations on the ionospheric field-aligned current region based on observations by polar orbiting satellites. The ratio between the magnetic and electric field perturbations, &lrtri;B_z/μ_oE_x, has a scale-length dependence : the ratio &lrtri;B_z/μ_oE_x decreases with decreasing scale length. B. FORGET et al.(J. Geophys. Res., 96,1843,1991) explained this scale-length dependence using a static model. In this paper, we compare the ratio &lrtri;B_z/μ_oE_x observed by the DE-2 satellite for various spatial scales with the effective Pedersen conductivity Σ_<p, eff> calculated by the method of FORGET et al. The results show that in many cases this model can adequately explain the observed scale-length dependence. However, cases exist in which the difference, &lrtri;B_z/μ_oE_x-Σ_<p, eff>, decreases at about 0.25-1.0s in temporal scales (2-8km in spatial scales). This behavior is explained as being due to Alfven waves.},
 pages = {90--102},
 title = {Scale-length dependence of the ratio between the magnetic and electric field perturbations in the ionospheric field-aligned current region},
 volume = {6},
 year = {1993}
}