 |
| Titel |
The mechanism of mid-latitude Pi2 waves in the upper ionosphere as revealed by combined Doppler and magnetometer observations |
| VerfasserIn |
V. A. Pilipenko, E. N. Fedorov, M. Teramoto, K. Yumoto |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 4 ; Nr. 31, no. 4 (2013-04-17), S.689-695 |
| Datensatznummer |
250019025
|
| Publikation (Nr.) |
 copernicus.org/angeo-31-689-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| The interpretation of simultaneous ionospheric Doppler sounding and ground
magnetometer observations of low-latitude Pi2 waves is revised. We compare
the theoretical estimates of the ionospheric Doppler velocity for the same
amplitude of the ground magnetic disturbances produced by a large-scale
compressional mode and an Alfvén mode. The plasma vertical displacement
caused by the wave electric field is shown to be the dominating effect.
Taking into account the correction of the previous paper, the observations of
low-latitude Pi2 in the F layer ionosphere by Doppler sounding and SuperDARN
(Super Dual Auroral Radar Network) radars give consistent results. We suggest that the Doppler response to Pi2
waves is produced by the Alfvén wave component, but not the fast-mode
component, whereas the ground magnetic signal is composed from both Alfvén
and fast magnetosonic modes. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|