 |
| Titel |
The ionospheric behavior in conjugate hemispheres during the 3 October 2005 solar eclipse |
| VerfasserIn |
H. Le, L. Liu, X. Yue, W. Wan |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 1 ; Nr. 27, no. 1 (2009-01-09), S.179-184 |
| Datensatznummer |
250016364
|
| Publikation (Nr.) |
 copernicus.org/angeo-27-179-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| We investigate the ionospheric behavior in conjugate hemispheres during the
3 October 2005 solar eclipse, on the basis of observations of electron
temperature (Te) from the Defense Meteorological Satellites Program (DMSP)
spacecraft, F2 layer critical frequency (foF2) and F2 layer peak height
(hmF2) at the Grahamstown ionosonde station, and total electron content (TEC)
from the Global Positioning System (GPS) station SUTH. The observations show
that when the eclipse occurred in the Northern Hemisphere, there was a
decrease in Te, an increase in foF2 and TEC, and an uprising in hmF2 in its
conjugate region compared with their reference values. We also simulated the
ionosphere behavior during this eclipse using a mid- and low-latitude
ionospheric model. The simulations agree well with the observations. Because
of the eclipse effect, there are far fewer photoelectrons travelling along
the magnetic field lines from the eclipse region to the conjugate region,
resulting in reduced photoelectron heating in the conjugate hemisphere which
causes a drop in electron temperature and subsequent disturbances in the
region. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|