Morphologic structure and possible sources of the AGW generation in ionosphere
|1Skorokhod, TV |
1Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Kyiv, Ukraine
|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).