Advances in Polar Upper

Atmosphere Research


No. 15




Electric fields and meteor radar wind measurements near 95 km over South Pole

············ ······························ J. M. Forbes, M. J. Jarvis, S. E. Palo, X. Zhang,

                                                                  Yu. I. Portnyagin and N. A. Makarov········· 1


First results of meteor radar lower thermosphere wind measurements at

Dixon, Arctic (73.5‹N, 80‹E)

············ ······················· E. G. Merzlyakov Yu. I. Portnyagin, N. A. Makarov,

                                                                                      J. M. Forbes and S. Palo······· 11

First mesopause temperature measurements using sodium lidar observations in the Antarctic region

············ ····· Takuya D.Kawahara, Tsukasa Kitahara, Fumitoshi Kobayashi,

                                          Masaki Tsutsumi, Yasunori Saito and Akira Nomura······· 23

Seasonal dependence of the vertical distributions of auroral kilometric radiation sources and auroral particle acceleration regions observed by the Akebono satellite

············ ····························· Atsushi Kumamoto, Takayuki Ono and Hiroshi Oya······· 32


Distortion of the nightside boundary of the gfirmly-closedh region in the 1996 Tsyganenko magnetic field model

············ ····························· Takashi Yamamoto, Shoshi Inoue and Masao Ozaki······· 43


Substorm effects on magnetospheric VLF hiss observed by ISIS satellites

············ ····················································································· Tadanori Ondoh······· 61


Implications of statistics of near-range Doppler velocity observed with the Syowa East HF radar

············ ························· Tadahiko Ogawa, Nozomu Nishitani, Natsuo Sato,

                                                       Hisao Yamagishi and Akira Sessai Yukimatu······· 82


Research Note


Initial results of Syowa MF radar observations in Antarctica

············ ································ Masaki Tsutsumi, Takehiko Aso and Masaki Ejiri····· 103


Propagation modes and source locations of the auroral kilometric radiation (AKR) identified by using the wave distribution function method

············ ························· Akira Hosotani, Takayuki Ono, Atsushi Kumamoto

                                                                                                   and Hiroshi Oya····· 117


Longitudinal dependence of eastward and westward magnetic variations at mid-latitudes

············ ················································· Shin'ya Nakano and Toshihiko Iyemori····· 128


New sounding modes for SuperDARN HF radars

································ Akira Sessai Yukimatu, Hisao Yamagishi and Natsuo Sato····· 135




VLF/LF sounding of the lower ionosphere to study the role of atmospheric oscillations in the lithosphere-ionosphere coupling

············· ··································· O. A. Molchanov, M. Hayakawa and K. Miyaki····· 146


Interhemispheric differences in the HF radar signature of the cusp region: A review through the study of a case example

············ ···························································· Steve E. Milan and Mark Lester····· 159




Development of an automatic observation system for Fabry-Perot interferometers

············ ······ Mamoru Ishii, Shoichi Okano, Eiichi Sagawa, Shinfichi Watari,

                                         Hirotaka Mori, Iwao Iwamoto, Kazumasa Kanda,

                                                             Fumihiko Kamimura and Dai Sakamoto····· 178


Solar wind dependence of the electron flux variation at geostationary orbit observed by ETS-V

············ ···························· N. Yokoyama, T. Goka, H. Matsumoto, K. Koga,

                                                                                  H. Koshiishi and Y. Kimoto·····193


Note to contributors··································································································· 201

Author index ············································································································· 203