THEMIS observations of the spatial extent and pressure‐pulse excitation of field line resonances

• Author(s) / Creator(s)

  • Kabin, Konstantin
  • Liu, Wenlong
  • Rankin, Robert
  • Angelopoulos, Vassilis
  • Glassmeier, Karl-Heinz
  • Li, X.
  • Sarris, T. E.
  • Bonnell, John
  • Talaat, Elsayed R.

• We present a case study of Field Line Resonances (FLRs) in the dayside magnetosphere, observed in both electric and magnetic field components at multiple L-shells near the equator. The event measured by the five THEMIS probes and the nearby GOES and Geotail satellites provides a unique opportunity to differentiate between temporal and spatial characteristics of FLRs. Narrow-band FLRs were excited globally at different frequencies matching the local field line resonant frequency. In conjunction with a sharp increase in the upstream solar wind density, prompt intensification of the FLR power was observed at different L-shells, simultaneously at different frequencies and amplitudes.

• Date created

  2010

• Subjects / Keywords

  • Ulf Pulsations
  • Magnetospheric Cavity
  • Ionosphere
  • Alfven Waves
  • Micropulsations
  • Instability

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/R3H12VN9T

• License

  © 2010 American Geophysical Union. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.