Morphologic structure and possible sources of the AGW generation in ionosphere

1Skorokhod, ТV
1Ariel University, Israel
Kosm. nauka tehnol. 2011, 17 ;(2):61-67
Publication Language: Russian
Acoustic-gravity waves (AGW) in the thermosphere are investigated on the basis of observation data from the Dynamics Explorer 2 satellite. It is shown that the planetary AGW distribution consists of regular and sporadic components. A catalogue of AGW waveforms is compiled. Possible surface sources of the AGW generation, namely, tropical cyclones, rocket launchings and earthquakes are investigated. Our sta­tistical analysis reveals no correlation between the AGW gen­eration and tropical cyclones as well as rocket launchings, but it shows some possible relation between the AGW generation and earthquakes.
Keywords: acoustic-gravity waves, regular and sporadic components, sources generation
1. Lizunov G. V., Skorokhod T. V. Planetary distribution of middle-scale atmosphere gravity waves according to satellite measurements. Kosm. nauka tehnol., 16 (1), 40—45 (2010) [in Russian].
2.  Fatkullin M. N., Zaruckaja E. V., Fatkullina V. A. Global spatial characteristics of medium-scale undulating inhomogeneities at altitudes of the F region of the ionosphere at different levels of geomagnetic activity: Preprint N 41 (926) IZMIRAN AN USSR. (Moscow, 1990) [in Russian].
3. Fedorenko A. K. Satellite observations of middlescale acoustic gravity waves above the polar caps. Kosm. nauka tehnol., 14 (5), 65—73 (2008) [in Russian].
4. Chernogor L. F. The tropical cyclone as an element of the Earth - atmosphere - ionosphere - magnetosphere system. Kosm. nauka tehnol., 12 (2/3), 16—36 (2006) [in Russian].
5.  Francis S. H. Global propagation of atmospheric gravity waves: a review. J. Atmos. and Terr. Phys., 37, 1011—1054 (1975).
6. Hocke K., Schlegel K. A review of atmospheric gravity waves and travelling ionospheric disturbances: 1982—1995. Ann. geophys., 14, 917—940 (1996).
7. Saul P., Boska J. Tropospheric events and possible related gravity wave activity effect on the ionosphere. J. Atmos. and Solar-Terr. Phys., N 63, 945—950 (2001).