Ionosphere F2-region under the influence of the evolutional atmospheric gravity waves in horizontal shear flow
✍ Scribed by G.G. Didebulidze; A.d. Pataraya
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 407 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1364-6826
No coin nor oath required. For personal study only.
✦ Synopsis
The ambipolar di}usion equation for the height distribution of electron density in the ionospheric F1!layer is solved in the presence of neutral horizontal shear ~ow[ By using this nonstationary solution the reaction of the F1!region electron density on the evolution of atmospheric acousticÐgravity waves "AGW# is investigated[ The evolution of the AGW and the corresponding behaviour of the height distribution of the F1!region electron density are described by the characteristic time\ t a \ of transient development of shear waves in the horizontal shear ~ow[ For long times t × t a \ the gravity wave frequency tends to the isothermal BruntÐVa Ãisa Ãla à frequency\ which appears in the F1!layer as wavelike behaviour of h m F1 and N m F1 with periods close to 05Ð19 min\ when the scale height of the neutral gas is H 59 km[ The shear wave\ which is due to the presence of horizontal shear ~ow\ gives su.cient changes of the height pro_le of electron density for times of t ¾ t a [ Þ 0888 Elsevier Science Ltd[ All rights reserved[