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| Titel |
Solar eclipse effects of 22 July 2009 on Sporadic-E |
| VerfasserIn |
G. Chen, Z. Zhao, C. Zhou, G. Yang, Y. Zhang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 28, no. 2 ; Nr. 28, no. 2 (2010-02-01), S.353-357 |
| Datensatznummer |
250016766
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| Publikation (Nr.) |
 copernicus.org/angeo-28-353-2010.pdf |
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| Zusammenfassung |
| The total solar eclipse of 22 July 2009, was visible
from some regions of China and the intense sporadic-E (Es) that broke out
during the solar eclipse period over the eastern China provided a unique
chance to study solar eclipse effects on the Es-layer. The ground based
high-frequency (HF) vertical-incidence and oblique-incidence backscatter
radio systems in Wuhan and an HF oblique receivers located in Suzhou were
operated to detect the Es-layer. The vertical, oblique and backscatter
ionograms of 22 and 23 July were recorded, processed and analyzed. The
analyzing results show that the critical frequency of Es, the hop number and
power of the rays transmitted from Wuhan to Suzhou as well as the Doppler
frequency shift of the one-hop oblique-incidence waves reflected by the
Es-layer all increased during the solar eclipse period. These variations are
displayed in the paper and explained to be induced by the wind-field, which
is produced by the powerful meridional air flows from the sunshine region to
the moon's shadow. |
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