2000 Fiscal Year Annual Research Report

大規模電磁場擾乱の極冠域から赤道域への侵入・伝播過程

Research Project

Project/Area Number	10440137
Research Institution	Kyushu University
Principal Investigator	湯元清文九州大学, 大学院・理学研究院, 教授 (20125686)
Co-Investigator(Kenkyū-buntansha)	糸長雅弘山口大学, 教育学部, 助教授 (60213104) 吉川顕正九州大学, 大学院・理学研究院, 助手 (70284479) 河野英昭九州大学, 大学院・理学研究院, 助教授 (60304721) 菊池崇総務省, 通信総合研究所, 主任研究官田中義人山口大学, 教育学部, 教授 (30023675)
Keywords	大規模電磁場擾乱 / 極冠域 / 赤道域 / 侵入・輸送過程 / 210度観測網 / 赤道域観測網 / 総合データ解析 / 国際共同観測
Research Abstract	本研究の目的は、極域から赤道域にわたる地球大気遷移圏(電離大気と中性大気が混合する80kmから数100kmの領域)での大規模な電磁気的な力学・作用過程を解明するために、次に、WIND衛星やIPS衛星の太陽風や粒子観測データと地上で観測された大規模な変動電磁場との総合的な比較解析をすることによって、太陽風擾乱現象の空間・時間スケールと地上の磁気赤道域まで侵入できる大規模な変動電磁場との因果関係をあきらかにする。更に、これらの地上・衛星の総合的なデータ解析結果を踏まえ、特に、極冠域と磁気赤道域における太陽風、磁気圏、電離圏、大気圏、地下を含めた電磁力学的な結合・作用過程を理論的に明らかにすることであった。平成12年度は、以下の計画に従って実施し、当初の目的の成果を得ることができた。 1.極冠域と磁気赤道域での大規模変動電磁場観測平成12年度の基盤研究(A)(1)(代表:湯元)の旅費を用いて、210゜磁気子午線と磁気赤道に沿った観測ネットワークの特に、アラスカ、ロシア域と磁気赤道域の磁力計、電場計、オーロラ分光計等の機器の保守点検を行い、赤道域の観測点間との絶対時刻精度を1秒以内に保った同時観測の高精度のデータを確保した。 2.総合的データ解析研究アラスカやシベリアのオーロラ帯とカナダの極冠域で観測される太陽風変動に伴うオーロラ、大気電場、降下粒子、大規模変動電磁場の諸特性について時間・空間的な相関解析研究を行った。その結果、極域の変動の形態や諸特性などを確立する、一方、WIND衛星やDMSP衛星の太陽風や粒子観測データとも比較解析することにより、太陽風の変動の空間・時間スケールと極冠域の地上の電磁場変動との相関性に関する手懸かり得られた。 3.理論的な電磁気結合の考察極域で得られた高精度の総合的なデータ解析結果を踏まえ、太陽風領域から極冠域への電磁気擾乱の侵入、更に、磁気圏、電離圏、大気圏、地下の電磁的な結合系の中の磁気赤道域への伝播過程についての理論的な考察がなされた。 4.成果のまとめと公表総合的なデータ解析や理論解析結果の研究成果は、2000年10月に札幌で催されたS-RAMP国際会議や国内学会で発表され、高い評価が得られた。

Research Products

(33 results)

All Other

All Publications (33 results)

[Publications] Baishev, D.G., E.S.Barkova, S.I.Solovyev, K.Yumoto, A.G.Yahnin: "Frequency growth of IPDP pulsations during a substorm as a manifestation of equatorward expansion of particle precipitation and current region"International Journal of Geomagnetism and Aeronomy. (in press). (2000)
[Publications] Cheng, C.-C., J.-K.Chao, and K.Yumoto: "Spectral Power of Low-Latitude Pi 2 pulsations at the 210° Magnetic Meridian Stations and Plasmaspheric Cavity Resonances"Earth, Planets & Space. 52. 615-627 (2000)
[Publications] Fedorov, E., V.Pilipenko, V.Surkov, D.R.K.Rao, and K.Yumoto: "Ionospheric propagation of MHD disturbances from the equatorial electrojet"J.Geophys.Res.. 104,A3. 4329-4336 (2000)
[Publications] Fujita S., T.Mizuta, M.Itonaga, H.Nakata and A.Yoshikawa: "Transient MHD impulses in the magnetosphere-ionosphere system : The 2D model of the Pi2 pulsations"Geophys.Res.Lett.. (in press). (2000)
[Publications] Hayakawa, M., T.Itoh, K.Hattori, and K.Yumoto: "ULF electromagnetic precursors for an earthquake at Biak, Indonesia on February 17, 1996"Geophys.Res.Lett.. 27, No.10,. 1531-1534 (2000)
[Publications] Itonaga M., A.Yoshikawa, K.Yumoto, S.Fujita and H.Nakata: "A study on the generation of field-aligned current in the magnetosphere"Mem.Fac.Sci., Kyushu Univ., Ser.D, Earth and Planet.Sci. 16, No.1. 1-9 (2000)
[Publications] Itonaga M., A.Yoshikawa and S.Fujita: "A wave equation describing the generation of field-aligned current in the Magnetosphere"Earth Planets Space. 52. 503-507 (2000)
[Publications] Kawano, H., R.Nakamura, S.Kokubun, T.Mukai, T.Yamamoto, K.Yumoto, and J.A.Slavin: "Substorm-assocaited shrinkage of the mid-tail magnetosphere : IACG campaign #2"Advance in Space Research. 1689-1696 (2000)
[Publications] Kawano, H., C.T.Russell and J.A.Newbury: "Correlation between the solar wind dynamic and static pressures"J.Geophys.Res.. 105. 7583-7589 (2000)
[Publications] Kepko, L., M.G.Kiveslson, and K.Yumoto: "Flow bursts, braking, and Pi2 pulsations"J.Geophys.Res.. 1903-1915 (2001)
[Publications] Kikuchi, T., M.Pinnock, A.Rodger, H.Luhr, T.Kitamura, H.Tachihara, M.Watanabe, N.Sato, and M.Ruohoniemi: "Global evolution of a substorm-associated DP2 current system observed by Super-DARM|N and magnetometers"Adv.Space Res.. 26. 121-124 (2000)
[Publications] Kikuchi, T., H.Luhr, K.Schlegel, H.Tachihara, M.Shinohara, and T.Kitamura: "Penetration of auroral electric fields to the equator during a substorm"J.Geophys.Res.. 105. 23251-23261 (2000)
[Publications] Lui, A.T., K.Liou, P.T.Newell, C.I.Meng, S.Ohtani, R.W.McEntire, N.J.Fox, R.P.Lepping. W.R.Paterson, J.B.Sigwarth, L.A.Frank, S.Kokubum, G.K.Parks, T.Moretto, and K.Yumtoto: "UConjunction of tail satellite for substorm study : ISTP event of 1997 January 2"Geophys.Res.Lett.. 27, No.13,. 1831-1834 (2000)
[Publications] Nakata,H.,S.Fujita,A.Yoshikawa,M.Itonaga,and K.Yumoto: "Ground magnetic perturbations associated with the standing toroidal mode oscillations in the magnetosphere-ionosphere system"Earth, Planets & Space. 52. 601-613 (2000)
[Publications] Nozawa, H., H.Misawa, S.Takahashi, A.Morioka,R.Sood,S.Okano,and K.Yumoto: "Variability of SII emission from the Io plasma torus"Adv.Space Res.. (in press). (2000)
[Publications] M.Nishino,H.Yamagishi,N.Sato,Y.Murata,L.Ruiyan,H.Honquao,P.Stauning,and J.A.Holtet: "Post-noon ionospheric absorption observed by imaging riometers at polar cusp/cap conjugate stations"Chinese Journal of Polar Science. (in press). (2000)
[Publications] Nose,M.,A.T.Y.Lui,.S.Ohtani,B.H.Kauk,R.W.McEntire,D.J.Williams,T.Mukai,S.Kokubun,T.Nagai,T.Iyemori,and K.Yumoto: "Acceleration of ionospheric origin ions in the near-Earth magnetotail during substorm"J.Geophys.Res.. 104, A4. 7669-7677 (2000)
[Publications] Nose,M.,S.Ohtani,A.T.Lui,S.P.Christon,R.W.McEntire,D.J.Williams,T.Mukai,Y.Saito,and K.Yumoto: "Change of energetic ion composition in the plasma sheet during substorms"J.Geophys.Res.. (in press). (2001)
[Publications] Sastri,J.H.,T.Takeuchi,T.Araki,K.Yumoto,S.Tsunomura,H.Tachihara,H.Luehr,and J.Watermann: "Preliminary impulse (PI) of the geomagnetic storm sudden commencement of November 19, 1993"J.Geophys.Res.. (in press). (2000)
[Publications] Shiokawa,K.,T.Ogawa,K.Igarashi,S.Miyazaki,F.J.Rich,A.Saito,and K.Yumoto: "Comprehensive imaging observation of mid-latitude ionospheric disturbances during storm-time substorms"J.Geophys.Res.. (in press). (2000)
[Publications] Shiokawa,K.,Y.Katoh,M.Satoh,M.K.Ejiri,and T.Ogawa: "Integrating-sphere calibration of all-sky cameras for nightglow measurements"Adv.Space Sci.. (in press). (2000)
[Publications] Shiokawa,K.,W.Baumjohann,G.Haerendel,and H.Fukunishi: "High-and low-altitude observations of adiabatic parameters associated with auroral electron acceleration"J.Geophys.Res.. (in press). (2000)
[Publications] Solovyev,S.I.,D.G.Baishev,E.S.Barkova,N.E.Molochushkin,and K.Yumoto: "Pi2 magnetic pulsations of auroral arc current system"Geophys.Res.Lett.. 27, No.13. 1839-1842 (2000)
[Publications] Takahashi,S.,H.Misawa,H.Nozawa,A.Morioka,R.Sood,S.Okano,and K.Yumoto: "Distribution of sodium cloud near Io and in the inner Jovian magnetosphere"Adv.Space Res.. (in press). (2000)
[Publications] Takenouchi,T.,T.Araki,H.Luehr,O.Rasmussen,J.Watermann,D.K.Miling,I.R.Mann,K.Yumoto,K.Shiokawa,and T.Nagai: "Geomagnetic negative sudden impulse due to a magnetic cloud observed on May 13, 1995"Geophys.Res.Lett.. 105, No.A8. 18835-18846 (2000)
[Publications] Tsunomura,S: "On the contribution of global scale polar-originating ionospheric current systems to geomagnetic disturbances in middle and low latitudes"Mem.Kakioka May.Obs.. 28(in press). (2000)
[Publications] Uozumi,T.,K.Yumoto,H.Kawano,A.Yoshikawa,S.I.Solovyev,E.F.Vershinin,and the 210 MM Observation Group: "Characteristics of energy transfer of Pi 2 magnetic pulsations : Latitudinal dependence"Geophys.Res.Lett.. 27, No.27. 1619-1623 (2000)
[Publications] Waters,C.L.,M.D.Sciffer,B.J.Fraser,F.W.Menk,K.Foulkes,K.Brand,O.Saka and K Yumoto: "The phase structure of very low latitude ULF waves across dawn"J.Geophys.Res.. (in press). (2001)
[Publications] Yoshikawa A.,and M.Itonaga: "The nature of reflection and mode conversion of MHD waves at the inductive ionosphere : Multi-step conversion between divergent and rotational electric fields"J.Geophys.Res.. 105, No,A5. 10565-10584 (2000)
[Publications] Yumoto,K,.and the CPMN Group: "Characteristics of Pi2 magnetic pulsations observed at the CPMN stations : A review of the STEP results"Earth Planets Space,. 52(in press). (2001)
[Publications] 巻田和男,星野光男,立原裕司,西野正徳,湯元清文: "ブラジル・トリニダード地磁気共役観測"拓殖大学理工学報告書. No.3(in press). (2000)
[Publications] 三澤浩昭,高橋慎,野澤宏大,森岡昭,岡野章一,Ravi Sood: "衛星イオを起源とする火山性ガスの観測-IV"第21回宇宙科学研究所太陽系科学シンポジウム集録集. (in press). (2000)
[Publications] 北川拓也,櫻井亨,利根川豊,新海雄一: "昼側磁気圏境界におけるPc3型電磁流体波の特性"東海大学紀要工学部. 39(in press). (2000)

2000 Fiscal Year Annual Research Report

大規模電磁場擾乱の極冠域から赤道域への侵入・伝播過程

Principal Investigator

湯元 清文 九州大学, 大学院・理学研究院, 教授 (20125686)

Research Products

[Publications] Baishev, D.G., E.S.Barkova, S.I.Solovyev, K.Yumoto, A.G.Yahnin: "Frequency growth of IPDP pulsations during a substorm as a manifestation of equatorward expansion of particle precipitation and current region"International Journal of Geomagnetism and Aeronomy. (in press). (2000)

[Publications] Cheng, C.-C., J.-K.Chao, and K.Yumoto: "Spectral Power of Low-Latitude Pi 2 pulsations at the 210° Magnetic Meridian Stations and Plasmaspheric Cavity Resonances"Earth, Planets & Space. 52. 615-627 (2000)

[Publications] Fedorov, E., V.Pilipenko, V.Surkov, D.R.K.Rao, and K.Yumoto: "Ionospheric propagation of MHD disturbances from the equatorial electrojet"J.Geophys.Res.. 104,A3. 4329-4336 (2000)

[Publications] Fujita S., T.Mizuta, M.Itonaga, H.Nakata and A.Yoshikawa: "Transient MHD impulses in the magnetosphere-ionosphere system : The 2D model of the Pi2 pulsations"Geophys.Res.Lett.. (in press). (2000)

[Publications] Hayakawa, M., T.Itoh, K.Hattori, and K.Yumoto: "ULF electromagnetic precursors for an earthquake at Biak, Indonesia on February 17, 1996"Geophys.Res.Lett.. 27, No.10,. 1531-1534 (2000)

[Publications] Itonaga M., A.Yoshikawa, K.Yumoto, S.Fujita and H.Nakata: "A study on the generation of field-aligned current in the magnetosphere"Mem.Fac.Sci., Kyushu Univ., Ser.D, Earth and Planet.Sci. 16, No.1. 1-9 (2000)

[Publications] Itonaga M., A.Yoshikawa and S.Fujita: "A wave equation describing the generation of field-aligned current in the Magnetosphere"Earth Planets Space. 52. 503-507 (2000)

[Publications] Kawano, H., R.Nakamura, S.Kokubun, T.Mukai, T.Yamamoto, K.Yumoto, and J.A.Slavin: "Substorm-assocaited shrinkage of the mid-tail magnetosphere : IACG campaign #2"Advance in Space Research. 1689-1696 (2000)

[Publications] Kawano, H., C.T.Russell and J.A.Newbury: "Correlation between the solar wind dynamic and static pressures"J.Geophys.Res.. 105. 7583-7589 (2000)

[Publications] Kepko, L., M.G.Kiveslson, and K.Yumoto: "Flow bursts, braking, and Pi2 pulsations"J.Geophys.Res.. 1903-1915 (2001)

[Publications] Kikuchi, T., M.Pinnock, A.Rodger, H.Luhr, T.Kitamura, H.Tachihara, M.Watanabe, N.Sato, and M.Ruohoniemi: "Global evolution of a substorm-associated DP2 current system observed by Super-DARM|N and magnetometers"Adv.Space Res.. 26. 121-124 (2000)

[Publications] Kikuchi, T., H.Luhr, K.Schlegel, H.Tachihara, M.Shinohara, and T.Kitamura: "Penetration of auroral electric fields to the equator during a substorm"J.Geophys.Res.. 105. 23251-23261 (2000)

[Publications] Nakata,H.,S.Fujita,A.Yoshikawa,M.Itonaga,and K.Yumoto: "Ground magnetic perturbations associated with the standing toroidal mode oscillations in the magnetosphere-ionosphere system"Earth, Planets & Space. 52. 601-613 (2000)

[Publications] Nozawa, H., H.Misawa, S.Takahashi, A.Morioka,R.Sood,S.Okano,and K.Yumoto: "Variability of SII emission from the Io plasma torus"Adv.Space Res.. (in press). (2000)

[Publications] M.Nishino,H.Yamagishi,N.Sato,Y.Murata,L.Ruiyan,H.Honquao,P.Stauning,and J.A.Holtet: "Post-noon ionospheric absorption observed by imaging riometers at polar cusp/cap conjugate stations"Chinese Journal of Polar Science. (in press). (2000)

[Publications] Nose,M.,A.T.Y.Lui,.S.Ohtani,B.H.Kauk,R.W.McEntire,D.J.Williams,T.Mukai,S.Kokubun,T.Nagai,T.Iyemori,and K.Yumoto: "Acceleration of ionospheric origin ions in the near-Earth magnetotail during substorm"J.Geophys.Res.. 104, A4. 7669-7677 (2000)

[Publications] Nose,M.,S.Ohtani,A.T.Lui,S.P.Christon,R.W.McEntire,D.J.Williams,T.Mukai,Y.Saito,and K.Yumoto: "Change of energetic ion composition in the plasma sheet during substorms"J.Geophys.Res.. (in press). (2001)

[Publications] Sastri,J.H.,T.Takeuchi,T.Araki,K.Yumoto,S.Tsunomura,H.Tachihara,H.Luehr,and J.Watermann: "Preliminary impulse (PI) of the geomagnetic storm sudden commencement of November 19, 1993"J.Geophys.Res.. (in press). (2000)

[Publications] Shiokawa,K.,T.Ogawa,K.Igarashi,S.Miyazaki,F.J.Rich,A.Saito,and K.Yumoto: "Comprehensive imaging observation of mid-latitude ionospheric disturbances during storm-time substorms"J.Geophys.Res.. (in press). (2000)

[Publications] Shiokawa,K.,Y.Katoh,M.Satoh,M.K.Ejiri,and T.Ogawa: "Integrating-sphere calibration of all-sky cameras for nightglow measurements"Adv.Space Sci.. (in press). (2000)

[Publications] Shiokawa,K.,W.Baumjohann,G.Haerendel,and H.Fukunishi: "High-and low-altitude observations of adiabatic parameters associated with auroral electron acceleration"J.Geophys.Res.. (in press). (2000)

[Publications] Solovyev,S.I.,D.G.Baishev,E.S.Barkova,N.E.Molochushkin,and K.Yumoto: "Pi2 magnetic pulsations of auroral arc current system"Geophys.Res.Lett.. 27, No.13. 1839-1842 (2000)

[Publications] Takahashi,S.,H.Misawa,H.Nozawa,A.Morioka,R.Sood,S.Okano,and K.Yumoto: "Distribution of sodium cloud near Io and in the inner Jovian magnetosphere"Adv.Space Res.. (in press). (2000)

[Publications] Takenouchi,T.,T.Araki,H.Luehr,O.Rasmussen,J.Watermann,D.K.Miling,I.R.Mann,K.Yumoto,K.Shiokawa,and T.Nagai: "Geomagnetic negative sudden impulse due to a magnetic cloud observed on May 13, 1995"Geophys.Res.Lett.. 105, No.A8. 18835-18846 (2000)

[Publications] Tsunomura,S: "On the contribution of global scale polar-originating ionospheric current systems to geomagnetic disturbances in middle and low latitudes"Mem.Kakioka May.Obs.. 28(in press). (2000)

[Publications] Uozumi,T.,K.Yumoto,H.Kawano,A.Yoshikawa,S.I.Solovyev,E.F.Vershinin,and the 210 MM Observation Group: "Characteristics of energy transfer of Pi 2 magnetic pulsations : Latitudinal dependence"Geophys.Res.Lett.. 27, No.27. 1619-1623 (2000)

[Publications] Waters,C.L.,M.D.Sciffer,B.J.Fraser,F.W.Menk,K.Foulkes,K.Brand,O.Saka and K Yumoto: "The phase structure of very low latitude ULF waves across dawn"J.Geophys.Res.. (in press). (2001)

[Publications] Yoshikawa A.,and M.Itonaga: "The nature of reflection and mode conversion of MHD waves at the inductive ionosphere : Multi-step conversion between divergent and rotational electric fields"J.Geophys.Res.. 105, No,A5. 10565-10584 (2000)

[Publications] Yumoto,K,.and the CPMN Group: "Characteristics of Pi2 magnetic pulsations observed at the CPMN stations : A review of the STEP results"Earth Planets Space,. 52(in press). (2001)

[Publications] 巻田和男,星野光男,立原裕司,西野正徳,湯元清文: "ブラジル・トリニダード地磁気共役観測"拓殖大学理工学報告書. No.3(in press). (2000)

[Publications] 三澤浩昭,高橋慎,野澤宏大,森岡昭,岡野章一,Ravi Sood: "衛星イオを起源とする火山性ガスの観測-IV"第21回宇宙科学研究所太陽系科学シンポジウム集録集. (in press). (2000)

[Publications] 北川拓也,櫻井亨,利根川豊,新海雄一: "昼側磁気圏境界におけるPc3型電磁流体波の特性"東海大学紀要工学部. 39(in press). (2000)

湯元清文九州大学, 大学院・理学研究院, 教授 (20125686)