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南大西洋域磁気異常帯での超高層現象の研究

Research Project

Project/Area Number 09874094
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Space and upper atmospheric physics
Research InstitutionKyushu University

Principal Investigator

湯元 清文  九州大学, 大学院・理学研究科, 教授 (20125686)

Co-Investigator(Kenkyū-buntansha) 行松 彰  国立極地研究所, 研究系, 助手 (70260007)
藤高 和信  放射線医学総合研究所, 第3研究グループ, 総合研究官 (70165398)
巻田 和男  拓殖大学, 工学部, 教授 (40129945)
立原 裕司  九州大学, 大学院・理学研究科, 助手 (00227092)
河野 英昭  九州大学, 大学院・理学研究科, 助教授 (60304721)
吉川 顕正  九州大学, 理学部, 講師 (70284479)
宮原 三郎  九州大学, 理学部, 教授 (70037282)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥700,000 (Direct Cost: ¥700,000)
Keywords南大西洋域磁気異常 / 超高層現象 / 地球磁場減少 / 高エネルギー粒子 / 地球環境 / 影響評価 / 調査研究の集会 / 国際共同観測 / 南大西洋域 / 磁気異常帯 / 共同観測調査 / 放射線
Research Abstract

本研究目的は、地磁気強度が日本付近の半分程度と異常に弱く磁場減少率が異常に大きいブラジル南部地域で、超高層や中層大気圏における諸現象の形態学的な調査を行い、将来予想される汎地球的な地球磁場減少がもたらすであろう宇宙からの高エネルギー粒子の入射量増加に伴って、どのように地球環境が変動するかについての影響評価とその予測を行うことであり、そのためにどのような共同観測調査が必要なのか等を研究することであった。
平成11年度も磁気異常帯での超高層異常現象の研究をする際、どのような観測項目をどの程度の観測精度で、いかなる方法により測定すべきかの調査研究のための研究集会を再度開催した。国内の学際的な分野の研究者を交え共同で研究する為の情報交換の場として、1998年5月下旬に開催された地球惑星科学関連合同大会や、10月の名古屋大学太陽地球環境研究所で開催された研究集会と協賛した会合の場を設けた。
具体的には、放射線計測を航空機や気球で行うことや、光学観測、オゾン観測、自然電波観測、宇宙雑音電波観測、地磁気観測を行う場合の測定器の感度をどの程度にすべきか検討した。また、磁気異常帯は広範囲に及んでいるため、船舶による広域観測や地磁気共役点(ブラジル-トリニダード)での比較観測の調査についても検討し、理論的な予測研究を行なった。
以上のような情報交換や予備調査研究を行うことによって、"南大西洋磁気異常帯での超高層現象の研究"の研究対象をしぼり込み、具体的な国際学術調査や現地研究者との共同研究への発展の可能性を探ることができた。

Report

(3 results)
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (47 results)

All Other

All Publications (47 results)

  • [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 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yagova,N.,V.Pilipenko,E.,Fedorov,M.Vellante and K.Yumoto: "Influence of ionospheric conductivity on mid-latitude Pc 3-4 pulsations"Earth Planet.Space. 51,No.2. 129-138 (1999)

    • Related Report
      1999 Annual Research Report
  • [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"拓殖大学理工額報告書. No.3(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Makita and N.J.Schuch: "Geomagnetic hole"Bulletin of A@Science and Engineering,A@Takushoku University. 7(2). 59-66 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Baishev,C.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)

    • Related Report
      1999 Annual Research Report
  • [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. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Liou,K.,C.-I.Meng,T.Y.Lui,P.T.Newell,M.Brittnacher,G.Parkes,G.D.Reeves,R.R.Anderson,and K.Yumoto: "On relarive timing in substormonset signatures"J.Geophys.Res.. 104,A3. 22807-22817 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Miyahara,S.,Y.Tanaka,K.Saita,K.Yumoto,and H.Tachihara: "On ULF magnetic field variations associated with the Guam earthquake of 8August 1993""Atomospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes",Ed.by M.Hayakawa,Terra Sci.Publ.Comp.(TERRAPUB),. 189-201 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Otani,S.,F.Creutzberg,T.Mukai,H.Singer,A.T.Y.Lui,M.Nakamura,P.Prikryl,K.Yumoto,and G.Rostoker: "Substorm onset timing: The December 31,1995 event"J.Geophys.Res.. 104,A3. 22713-22727 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Pilipenko,V.,K.Yumoto,E.Fedrov,and N.Yagova: "Hydromanetic spectroscopy of the magnetosphere with Pc 3 geomagnetic pulsations along the 210°meridian"Annalses Geophysicae. 17. 53-65 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Pilipenko,V.A.,Fedorof,N.V.Yagova,and K.Yumoto: "Attempt to detect ULF electro-magnetic activity preceding earthquke"Monograph on "Atmospheric an Ionospheric Electromagnetic Phenomena Associated with Earthquakes",Ed.by M.Hayakawa,Terra Sci.Publ.Comp.(TERRAPUB). 203-214 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Sibeck,D.G.,N.L.Borodkova,R.Kessel,S.Kokubun,R.P.Lepping,R.Lin,K.Lion,H.Luhr,R.W.McEntire,C.-I.Meng,T.Mukai,Z.Nemecek,C.Owen,G.Parks,T.D.Phan,S.A.Romanov,J.Safrankova,J.-A.Sauvaud,S.Schwartz,K.Shiokawa,H.J.Singer,S.I.Solovyev, A. Szabo, K. Takahashi, D.J. Williams, K. Yumoto and G.N. Zastenker: "Conprehensive study of the magnetospheric response to a hot flow anomaly"J.Geophys.Res.. 104,A3. 4577-4593 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Solovyev,S.I.,D.G.Baishev,E.S.Barkova,M.J.Engebretson,J.L.Posch,W.J.Hughes,K.Yumoto,and V.A.Pikipenko: "Structure of disturbances in the dayside and nightside ionosphere during periods of negative interplanetary magnetic field Bz"J.Geophys.Res.. 104,No.A12. 28019-28039 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tkakahashi,K.,B.J.Anderson,and K.Yumoto: "Upper Atmospheric Research Sattelite ovservation of a Pi 2 pulsation"J.Geophys.Res.. 104,No.11. 25035-25045 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Vershinin,E.F.,A.V.Buzevich,K.Yumoto,K.Saita,and Y.Tanaka: "Correlations of seismic activity with electromagnetic emssions and variations in Kamchatka region"Monograph on "Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes",Ed.by M.Hayakawa,Terra Sci.Publ.Comp.. 513-517 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yoshikawa,A.,M.Itonaga,S.Fujita,H.Nakata,and K.Yumoto: "Eigenmode analysis of field line oscillations interacting with the ionosphere-atmosphere-solid earthe electromagnetic coupled system"J.Geophys.Res.. 104,No.12. 28437-28457 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yumoto,K.,H.Utada,and Y.Hamano: "Geomagnetically induced currents in the western Pacific region during February 8-9,1992 magnetic storm"Mem.Fac.Sci.,Kyushu Univ.. 30,No.3. 111-118 (1999)

    • Related Report
      1999 Annual Research Report
  • [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.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [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-Earthe magnetotail during substorm"Geophys.Res.Lett.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yumoto,K.,and the CPMN Group: "Characteristics of Pi 2 magnetic pulsations observed at the CPMN stations: A review of the STEP results"Earth Planets Space.. 52(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Uozumi,T.,K.Yumoto,H.Kawano,A.Yoshikawa,S.I.Solovyev,E.F.Vershinin,and the 210 MM Ovservation Group: "Characteristics of energy transfer of Pi 2 magnetic pulsations : Latitudinal dependence"Geophys.Res.Lett.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kawano,H.,S.M.Petrinec,C.T.Russell,and T.Higuchi: "Magnetopause shape determininations from measured position and estimated flaring angle"J.Geophys.Res.. 104. 247-261 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Russell,C.T.,X.W.Zhou,P.J.Pchi,H.Kawano,T.E.Moore,W.K.Peterson,J.B.Cladis,and H.J.Singer: "Sudden compression of the outer magnetosphere associated with an ionospheric mass ejection"Geophys.Res.Lett.. 26. 2343-2346 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kikuchi,T.,H.Luhr,K.Schlegel,T.-I.Kitamura,and H.Tachihara: "Instantaneous penetration of electric fields associated with Region-1 and 2 field-aligned currents during a substorm as deduced from the EISCAT and the polar and equatorial magnetometer arrays"J.Geophys.Res.. 104. 247-261 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 糸長雅弘: "非結合磁力線振動について(On the decoupled fild line oscillation)"山口大学教育学部研究論叢. 第49巻,第2部. 13-22 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A.Yoshikawa 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.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Hashimoto,T.Kikuchi,Ebihara,and M.Ejiri: "Response of Ring Current and Ionospheric Convection to Sudden Southward Turning of IMF"Proceedings of the SuperDARN,Reykjavik,Iceland. 21,1-21,4 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kikuchi,T.,K.Hashimoto,M.Pinnock,A.Rodger,J.P.Villain,H.Luehr,M.Watanabe,M.Ruohoniemi,and P.Stauning: "Plasma flow burst around the cusp caused by the solar wind pressure pulse"Proceedings of the SuperDARN,Reykjavik,Iceland. 26,1-26,4 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Kikuchi,M.Pinnock,A.Rodger,H.Luehr,T.Kitamura,H.Tachihara,M.Watanabe,N.Sato,and M.Ruohoniemi: "Gloval evolution of a substorm-associatid DP2 current system observed by SuperDARN and magnetometers"Advances in Space Research. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kikuchi,T.,H.Luehr,K.Schlegel,T.Kitamura,and H.Tachihara: "Penetration of auroral electric fields to the equator during a substorm"J.Geophys.Res.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Li., Y., B. J. Fraser、 F. W. Menk, D. J. Webster, and K. Yumoto: "Properties and Sources of low and very low latitude Pi 2 pulsations" J. Geophys. Res.103, No.A4. 2343-2358 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sibeck, D. G., Takahashi, K. Yumoto, and G. D. Reeves: "Concerning the origin of signatures in dayside equatorial ground magnetograms" J. Geophys. Res.103, No.A4. 6763-6769 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tanaka, Y. -M., K.Yumoto, M. Shinohara, S. I. Solovyev, E. F. Vershinin, B. J. Fraser and D. Cole: "Coherent Pc 3 pulsations in the prenoon sector observed along the 210 deg. magnetic meridian" Geophys. Res. Lett.25, No.18. 3477-3480 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Vershinin, E. F., A. V. Buzevich, K. Yumoto, K. Saita, and Y. Tanaka: "Correlations of seismic activity with electromagnetic emssions and variations in Kamchatka region" Monograph on " Seismo-Atmospheric and-Ionospheric Electromagnetic Phenomenas. (in press).

    • Related Report
      1998 Annual Research Report
  • [Publications] Colqui, R., K. Yumoto, H. Tachihara, T-I Kitamura, N.B. Trivedi, and J. M. ds Costa: "Two-dimensional equational current system deduced from the Brazilian network, 1. based on the H component" Mem. Fac. Sci., Kyushu Univ., Ser. D, Earth Planet. Sci.vol.30, No.1. 1-14 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 巻田和男: "ブラジル磁気異常帯の観測概況と計画" STEシンポジウム、名古屋大学. 4-5 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Saka, O., T. Kitamura, H. Tachihara, M. Shinohara, N. B. Trivedi, G. D. Reeves, and T. L. hansen: "Amplitude modulation of the equatorial electrojet (EEJ) during a magnetospheric storm" Jour. Atmos. Solar-Terr. Phys.vol.60. 1129-1137 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 藤高和信: "宇宙と地球の放射線環境-その未来予測への挑戦-" 地球. 22. 5-8 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 藤高和信: "宇宙と地球の放射線環境の進化" 地球. 22. 17-25 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kikuchi T., M. Pinnock, A. Rodger, H. Luehr, T. Kitamura, H. Tachihara, M. Watanabe, N. Sato, and M. Ruohoniemi: "Global evolution of a substorm-associated DP2 current system observed by Super DARN and magnetometers" Advances in Space Research. (in press).

    • Related Report
      1998 Annual Research Report
  • [Publications] Kawano, H., R. Nakamura, S. Kokubun, T. Mukai, T. Yamamoto, K. Yumoto, and A. Slavin: "Substorm-associated shrinkage of the mid-tail magnetosphere : IACG Campaign #2" Advances in Space Research. (in press).

    • Related Report
      1998 Annual Research Report
  • [Publications] Abdu, M. A., J. H. Sastri, H. Luhr, H. Tachihara, T. Kitamura, N. B. Trivedi, and J. H. A. Sobral: "DP 2 electric field fluctuations in the dusk-time dip equatorial ionosphere" Geophys. Res. Lett.VOL.25, NO.9. 1511-1514 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kikuchi, T., H. Luhr, K. Schlegel, T. -I. Kitamura, and H. Tachihara: "Instantaneous penetration of electric fields associated with Region-1 and 2 fiels-aligned currents during a substorm as deduced from the EISCAT and the polar and equatorial magnetometer arrays" J. Geophys. Res.(in press).

    • Related Report
      1998 Annual Research Report
  • [Publications] Itonaga, M., A. Yoshikawa, and K. Yumoto: "Transient response of the non-uniform equatorial ionosphere to compressional MHD waves" J. Atmos. Solar-Terr. Phys.Vol.60, No.2. 253-261 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Itonaga, M., and K. Yumoto: "ULF waves and the ground magnetic field" J. Geophys. Res.Vol.103, No.A5. 9295-9291 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Itonaga, M., A. Yoshikawa, K. Yumoto, and S. Fujita: "Transient response of the non-uniform equatorial ionosphere to the ionospheric current of polar origin" 1998 Western Pacific Geophysics Metting, Taipei. SP41A-17 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Fujita, S., and M. Itonaga: "On instantaneous horizontal transmission of magnetic signals associated with the incident Alfven mode impulse from high-latitudes to middle-and low-latitudes" AGU 1998 Fall Meeting, San Francisco. SM41B-07 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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