DanskDTU.dkIndexContact usPhonebookPortalenDTU Alumni
Title: Observations of a Pc5 global (cavity/waveguide) mode outside the plasmasphere by THEMIS
Type: Journal articleJournal article
Participant(s):
Forfatter:  Hartinger, Michael
Earth and Space Sciences Department, University of California

Forfatter:  Angelopoulos, Vassilis
Earth and Space Sciences Department, University of California

Forfatter:  Moldwin, Mark B.
Earth and Space Sciences Department, University of California

Forfatter:  Nishimura, Yukitoshi
Atmospheric and Oceanic Sciences Department, University of California

Forfatter:  Turner, Drew L.
Earth and Space Sciences Department, University of California

Forfatter:  Glassmeier, Karl-Heinz
Institute for Geophysics and Extraterrestrial Physics, Technical University of Braunschweig

Forfatter:  Kivelson, Margaret G.
Earth and Space Sciences Department, University of California

Author:  Matzka, Jürgen (Cwisno: 59846)
Technical University of Denmark
Email:

Author:  Stolle, Claudia (Cwisno: 59880)
Tech Univ Denmark, DTU Space, Copenhagen, Denmark
Email:

Abstract: Standing fast mode waves known as global modes, or cavity/waveguide modes, have been extensively studied as a potential driver of monochromatic shear Alfven waves in the Earth's magnetosphere via the field line resonance (FLR) mechanism. However, their existence outside of the plasmasphere remains controversial. We present here a global mode observation outside the plasmasphere, using simultaneous multispacecraft observations in the solar wind, the magnetosheath and the outer magnetosphere, as well as ground magnetometer data. Broadband solar wind dynamic pressure fluctuations are the most likely drivers of the Pc5 frequency range (2-7 mHz) global mode. The global mode transfers energy toward the plasmapause, where it drives localized shear Alfven wave activity in the Pc5 frequency range. Global modes are thus a viable mechanism for converting broadband energy sources to monochromatic, radially localized shear Alfven waves in the Pc5 frequency range.
Published: in journal: Journal of Geophysical Research (ISSN: 0148-0227) (DOI: http://dx.doi.org/10.1029/2011JA017266), vol: 117, pages: A06202, 2012
DOI:
File(s):
See the publication in DTU Orbit See the publication in DTU Orbit

Top
DTU SpaceElektrovej, bygn. 327DK - 2800 Kgs. LyngbyTel (+45) 4525 9500VAT 30060946
Cookies