Change search
ReferencesLink to record
Permanent link

Direct link
Inhomogeneous transverse electric fields and wave generation in the auroral region: A statistical study
Show others and affiliations
2001 (English)In: Journal of Geophysical Research, ISSN 0148-0227, E-ISSN 2156-2202, Vol. 106, no A6, 10803-10816 p.Article in journal (Refereed) Published
Abstract [en]

We use data from the Freja satellite to investigate the importance of localized transverse DC electric fields for the generation of broadband waves responsible for ion heating in the auroral region. Theoretical models indicate that shear in the plasma Row perpendicular to the geomagnetic field can generate waves in a broad range around the ion gyrofrequency for parallel currents significantly below the threshold of the current-driven electrostatic ion cyclotron instability. We compare in situ data with laboratory measurements and theoretical predictions, and we find that inhomogeneous electric fields might well be important for the generation of waves in the auroral region.

Place, publisher, year, edition, pages
2001. Vol. 106, no A6, 10803-10816 p.
Keyword [en]
ion-cyclotron turbulence, band elf waves, velocity-shear, magnetic-field, electrostatic-waves, energization mechanisms, topside ionosphere, aligned currents, plasma-waves, flow
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-20656DOI: 10.1029/2001JA900003ISI: 000168905400028OAI: diva2:339352
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2012-06-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ivchenko, Nickolay V.Karlsson, Tomas
By organisation
Alfvén Laboratory
In the same journal
Journal of Geophysical Research
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 38 hits
ReferencesLink to record
Permanent link

Direct link