検索結果 34 件

デジタル記事
Rene Warnant, Eric Pottiaux<Z54-J298>EPS : Earth, Planets and Space52(11) 2000p.1055~1060
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  • 要約等The paper outlines......ing to compute the TEC with a pre......about 2-3 TECU and to detect Trav......s. We describe the solar cycle dependance of the TEC and TIDs. Since the beginning of 1......er ionospheric activity due to the increasing solar activity. This ionospheric activity is characteriz......larly reaching the level of 60 TECU and by a larger nu......bances. During the winter 1999-2000, the mean daily TEC......ve 45 TECU; at solar minimum the mean daily TEC......2000 (close to solar maximum) more ......nuary 1996 (at solar minimum).
  • 参照...s: Description and Analysis A Com......arison between the TEC Computed using GPS and Ionosonde Meas......mid‐latitudes: Solar cycle phase de......Reliability of the TEC Computed U......Measurements — The Problem of Har......ison of mapped and measured total......tioning system and beacon satelli......ns Response of the ionospheric el......luctuations in solar activity A 22-year cycle in the F layer ionization of the ionosphere Modeling of the apparent height variations of...
図書
Cambridge University Press2010.<MB61-B14>
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  • 要約等...tes studies of the Sun's variability, the surrounding heliosphere, and the environment and climate of planets. Over the past few centu......es, our understanding of how the Sun drives space weather and climate on the Earth and other planets has a......creasing rate. The Sun is a magne...... variable star and, for planets w......rth with both, thereare profound consequences"--...
  • 内容細目...s J. Schrijver and George L. Sisc......on of magnetic activity of Sun-like st......jver Formation and early evolution of stars and protoplanetary......ld E. Brownlee Solar internal flows and dynamo action ......iesch Modeling solar and stellar dynamo......anetary fields and dynamos / Ulri......R. Christensen The structure and evolution of the three-dimensional solar wind / John T. Gosling The heliosphere and cosmic rays / J. R. Jokipii Solar spectral irrad......: measurements and models / Judith L. Lean and Thomas N. Wood......Beer Assessing the sun-climate re......ey Terrestrial ionospheres / Stanley C. Solomon Long-te...
  • 件名Solar activity. Weather -- Effect of solar activity on. Heliospher......(Astrophysics) Solar-terrestrial physics.
デジタル記事
2018-03-21Annales Geophysicae36 2p.459-471
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  • 要約等<jats:p>Abstract. The main purpose o......to investigate the four-peak stru......re observed in the low-latitude equatorial ionosphere by the FORMOSAT/COSMI......tions of NmF2 (the density of the F layer peak) and hmF2 (ionosphe......rder to obtain the amplitudes and phases of the main waves. The four-peak structure in the equatorial and low-latitude ionosphere was present in both low and high solar activity periods. This ......ins related to the tidal waves pr...... that modulate the E-region dynamo, mainly the eastward non-m...... combined with the migrating diur......ed during 2008 and 2013 September...... revealed that the wave-4 structures became more...
  • 件名Space and Planetary Science Earth and Planetary Scie......logy Astronomy and Astrophysics
  • 参照...h 11, 2011 off the coast of Tohok......hquake on high and low latitude ionospheres and its possible disturbing mecha...
デジタル記事
2014-08Journal of Geophysical Research: Space Physics119 8p.6774-6783
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  • 要約等...al analysis of the ionospheric <j......onal variation and solar activity dependence und......etically quiet and moderate condi......s performed by the European Incoh......r between 1982 and 2011. We have confirmed that there is a major d......eating between the high‐ and low‐latitude sides of the EISCAT field o......ults show that the high‐latitude and midlatitude troughs occur on the high‐ and low‐latitude sides of the FOV, respectiv......During summer, therefore, the occurrence rat......d at 80–90% in the postmidnight h......d return flow. Solar activity dependence on ......rents modulate the occurrence rate of the trough...
  • 件名Space and Planetary Science Geophysics
  • 参照Relationship Between the Locations of the Midlatitude Trough and Plasmapause Using GNSS‐TEC and Arase Satellite Observation D...
デジタル文書・図像類
石田, 哲朗, 小川, 泰信, 門倉, 昭, 平木, 康隆, Häggström, Ingemar, Tetsuro, Ishida, Yasunobu, Ogawa, Akira, Kadokura, Yasutaka , Hiraki, Ingemar, Häggström2014-12-02
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  • 並列タイトル等(連結)Seasonal variation and solar activity dependence of the quiet-time ionospheric trough
  • 並列タイトル等Seasonal variation and solar activity dependence of the quiet-time ionospheric trough
デジタル記事
2016-04Journal of Atmospheric and Solar-Terrestrial Physics141p.1-12
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  • 件名Space and Planetary Science Atmospheric...
  • 参照...stigation into the possible connections between the zonal neutral wind speeds and equatorial pla......elocities over the African equato......l distribution and parameter depe......f gravity wave activity in the Martian upper thermosphere deriv......rturbations in the Middle Atmosph......f Gravity Wave Activity Derived From a......el A review of the SCOSTEP’s 5-ye......Variability of the Sun and Its Terrestrial Impact
デジタル記事
2013-05Journal of Geophysical Research: Space Physics118 5p.2452-2465
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  • 要約等...y, we quantify the contribution o......lectrodynamics and examine the dependence of the ionospheric perturbations on solar activity. We focus on m......e one (QSPW1), and nonmigrating s......(SW1) under northern winter condi......ns, when QSPW1 and SW1 are climat......y strong. From thermosphere‐ionosphere‐mesosphere ele......ulations under solar minimum condit...... is found that the mean winds and DW1 produce a ......t is upward in the morning and around dusk. The modeled SW2 al......two pattern in the ionospheric ve...... to mean winds and DW1. SW1 can c......rect impact on the vertical drift......ts of both SW2 and SW1 become large at middle to...
  • 件名Space and Planetary Science Geophysics
  • 参照The neutral dynamics during the 2009 sudden st......lanetary Waves and the Solar Semidiurnal Ti......ent Effects of solar activity on ionospheric......rent system in the Southeast Asia region......fts from radar and C/NOFS observations in the Indian and Indonesian sec......f observations and model Quasi‐bi......oscillation of the ionospheric wind dynamo
図書
名古屋大学21世紀COEプログラム「太陽・地球・生命圏相互作用系の変動学」編集委員会 編名古屋大学大学院環境学研究科21COE地球SELIS支援室2006.3<ME21-H32>
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  • 内容細目...田健一 著 Linking land surface parameters and processes:from......obal warming:2.the spatio-tempora......t deduced from the EISCAT UHF rad......are footpoints and Yohkoh flare c......alogue Optical and microphysical ...... measured with the Raman lidar and hydrometeor vi......in reflective band Simple model o......r evolution of the Kelvin-helmhol...... radionuclides and [137]Cs activities of the near-surface s......lution of H[+] and O[+] ions in the inner magnetos......bservations by the FAST satellite......bservations of solar spectral irrad...... variations by the SORCE satellit......動の時空間変動 金森大成 著 The formation mechanism of a coll...
デジタル記事
2009-12Journal of Atmospheric and Solar-Terrestrial Physics71 17-18p.2055-2063
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  • 件名Space and Planetary Science Atmospheric...
  • 参照Solar zenith angle d......plasma density and temperature in the polar cap ionosphere and low-altitude m......iet periods at solar maximum
デジタル記事
2007-06Journal of Geophysical Research: Space Physics112 A6
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  • 要約等<jats:p>We analyze the ionospheric effect on the phase and amplitude of r......n (RO) signal. The introduced theoretical model ......lation between the phase acceleration and intensity vari......s of RO signal and opens a way to...... structures in the propagation me......MP) RO events, the locations of the inclined plasma layers in the lower ionosphere are estimated, and the electron densi......By analysis of the CHAMP RO data, we reveal the dependence of the intensity vari......arp changes in the <jats:italic>D......:italic> index and on the local time. Maps of the seasonal, geographical, and temporal distributions of the...
  • 件名Paleontology Space and Planetary Science Earth and Planetary Scie......s Geochemistry and Petrology Soil...... Water Science and Technology Ecology Aquatic Sc...
  • 参照Global Structure and Seasonal Variations of the Tidal Amplitude in Sporadic‐E...