Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.490 IF 1.490
  • IF 5-year value: 1.445 IF 5-year
    1.445
  • CiteScore value: 2.9 CiteScore
    2.9
  • SNIP value: 0.789 SNIP 0.789
  • IPP value: 1.48 IPP 1.48
  • SJR value: 0.74 SJR 0.74
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 88 Scimago H
    index 88
  • h5-index value: 21 h5-index 21
Volume 26, issue 12
Ann. Geophys., 26, 4023–4030, 2008
https://doi.org/10.5194/angeo-26-4023-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Ninth International Conference on Substorms (ICS9)

Ann. Geophys., 26, 4023–4030, 2008
https://doi.org/10.5194/angeo-26-4023-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  09 Dec 2008

09 Dec 2008


Tailward propagation of Pi2 waves in the Earth's magnetotail lobe

M. Volwerk1, R. Nakamura1, W. Baumjohann1, T. Uozumi2, K. Yumoto2, and A. Balogh3 M. Volwerk et al.
  • 1Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
  • 2Space Environment Research Center, Kyushu University, Fukuoka 812-8581, Japan
  • 3Imperial College, London, SW7 2AZ, UK

Abstract. Pi2 waves are an intergral part of the substorm process and have been observed on the ground and in space. Using the special ability of Cluster to determine the propagation direction of signals measured in the magnetometer data, it is found that in the lobes of the Earth's magnetotail, for the cases in this study, the Pi2 waves are travelling tailward. The polarization of the waves in the lobes corresponds well with the polarization observed in the highest latitude ground station. The propagation velocity of the Pi2 waves in the lobes is basically Alfvénic.

Publications Copernicus
Download
Citation