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  • The paper analyses one long-term pass (26 August 2007) of the THEMIS spacecraft across the dayside low-latitude magnetopause. THEMIS B, serving partly as a magnetosheath monitor, observed several changes of the magnetic field that were accompanied by dynamic changes of the magnetopause location and/or the structure of magnetopause layers observed by THEMIS C, D, and E, whereas THEMIS A scanned the inner magnetosphere. We discuss the plasma and the magnetic field data with motivation to identify sources of observed quasiperiodic plasma transients. Such events at the magnetopause are usually attributed to pressure pulses coming from the solar wind, foreshock fluctuations, flux transfer events or surface waves. The presented transient events differ in nature (the magnetopause surface deformation, the low-latitude boundary layer thickening, the crossing of the reconnection site), but we found that all of them are associated with changes of the magnetosheath magnetic field orientation and with enhancements or depressions of the plasma density. Since these features are not observed in the data of upstream monitors, the study emphasizes the role of magnetosheath fluctuations in the solar wind-magnetosphere coupling.
  • The paper analyses one long-term pass (26 August 2007) of the THEMIS spacecraft across the dayside low-latitude magnetopause. THEMIS B, serving partly as a magnetosheath monitor, observed several changes of the magnetic field that were accompanied by dynamic changes of the magnetopause location and/or the structure of magnetopause layers observed by THEMIS C, D, and E, whereas THEMIS A scanned the inner magnetosphere. We discuss the plasma and the magnetic field data with motivation to identify sources of observed quasiperiodic plasma transients. Such events at the magnetopause are usually attributed to pressure pulses coming from the solar wind, foreshock fluctuations, flux transfer events or surface waves. The presented transient events differ in nature (the magnetopause surface deformation, the low-latitude boundary layer thickening, the crossing of the reconnection site), but we found that all of them are associated with changes of the magnetosheath magnetic field orientation and with enhancements or depressions of the plasma density. Since these features are not observed in the data of upstream monitors, the study emphasizes the role of magnetosheath fluctuations in the solar wind-magnetosphere coupling. (en)
Title
  • Dayside magnetopause transients correlated with changes of the magnetosheath magnetic field orientation
  • Dayside magnetopause transients correlated with changes of the magnetosheath magnetic field orientation (en)
skos:prefLabel
  • Dayside magnetopause transients correlated with changes of the magnetosheath magnetic field orientation
  • Dayside magnetopause transients correlated with changes of the magnetosheath magnetic field orientation (en)
skos:notation
  • RIV/00216208:11320/11:10108246!RIV12-GA0-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA205/09/0112), P(GA205/09/0170), P(GD202/08/H057), S, Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 192988
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/11:10108246
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Magnetospheric configuration and dynamics; Magnetosheath; and boundary layers; cusp; Magnetopause (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [465ED9D830E7]
http://linked.open...i/riv/nazevZdroje
  • Annales Geophysicae
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 29
http://linked.open...iv/tvurceVysledku
  • Němeček, Zdeněk
  • Šafránková, Jana
  • Sibeck, DG
  • Tkachenko, Oksana
http://linked.open...ain/vavai/riv/wos
  • 000290018000008
http://linked.open...n/vavai/riv/zamer
issn
  • 0992-7689
number of pages
http://bibframe.org/vocab/doi
  • 10.5194/angeo-29-687-2011
http://localhost/t...ganizacniJednotka
  • 11320
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