Seasonal variation of gravity wave activity in the lower ionosphere in Central Europe

Authors
Boskova, J Lastovicka, J
Citation
J. Boskova et J. Lastovicka, Seasonal variation of gravity wave activity in the lower ionosphere in Central Europe, STUD GEOPH, 45(1), 2001, pp. 85-92
Citations number
22
Categorie Soggetti
Earth Sciences
Journal title
STUDIA GEOPHYSICA ET GEODAETICA
ISSN journal
00393169 → ACNP
Volume
45
Issue
1
Year of publication
2001
Pages
85 - 92
Database
ISI
SICI code
0039-3169(2001)45:1<85:SVOGWA>2.0.ZU;2-Q
Abstract
The seasonal variation of gravity wave activity at altitudes around 95 km i s investigated using digital measurements of low-frequency nighttime radiow ave absorption at Pruhonice (50 degreesN, 15 degreesE) between 1989 and 199 3. The analysis of 5 years of data allows two conclusions to be drawn: (1) under high solar activity conditions, there is no clearly detectable season al variation of gravity wave activity; (2) under medium solar activity cond itions (1992, 1993), there is a tendency to a pronounced summer maximum.