Abstract
The nonlinear evolution of the collisional gravitation induced Rayleigh-Taylor (R-T) instability in the equatorialF region is investigated taking into account the finite larmor radius (FLR) effects and the complete ion inertial term in ion equation of motion. A special class of coherent weakly nonlinear modes as solutions to the wave equation describing R-T instability driven modes is obtained. The leading nonlinear effects in the wave equation are found to appear throughV L , the ion diamagnetic drift which essentially gives the FLR corrections. It is shown that the R-T magnetic drift which essentially gives the FLR corrections. It is shown that the R-T modes in the equatorialF region can evolve into coherent, nonlinear, almost sinusoidal, stationary wave structures. These structures are found to travel with a constant phase velocity and to have slightly distorted sinusoidal shapes. These results seem to have a good agreement with many of the recent rocket and satellite observations of the equatorial spreadF irregularities.
Similar content being viewed by others
References
Balsley B B, Haerendel G and Greenwald R A 1972J. Geophys. Res. 77 5625
Bogoliubov N N and Mitropolsky Y A 1961Asymptotic methods in theory of nonlinear oscillations (Delhi: Hindustan Pub. Corp.) p. 51.
Booker H G and Wells H W 1938Terr. Magn. Atmos. Elect. 43 249
Calvert W and Schmidt C W 1964J. Geophys. Res. 69 1839
Chaturvedi P K and Kaw P K 1975Geophys. Res. Lett. 2 381
Cunnold D M 1969J. Geophys. Res. 74 5709
Dungey J W 1956J. Atmos. Terr. Phys. 9 304
Dyson M L, McClure J P and Hanson W B 1974J. Geophys. Res. 79 1497
Farley D T 1974Rev. Geophys. 12 285
Farley D T, Balsley B B, Woodman R F and McClure J P 1970J. Geophys. Res. 75 7199
Hanson W B and Sanatani S 1973J. Geophys. Res. 78 1167
Herman J R 1966Rev. Geophys. 4 255
Holtet J A, Maynard N C and Heppner J P 1975EOS Trans AGU (Abst.) 56 418
Hudson M K and Kennel C F 1974a UCLA-Rept. PPG-179
Hudson M K and Kennel C F 1974b UCLA-Rept. PPG-201
Hudson M K and Kennel C F, 1975aJ. Plasma Phys. 14 121
Hudson M K and Kennel C F, 1975bJ. Plasma Phys. 14 135
Hudson M K and Kennel C F, 1975cJ. Geophys. Res. 80 4581
Hudson M K, Kennel C F and Kaw P K 1973EOS Trans. AGU (Abstract)54 1147
Johnson M H and Hulbert E O 1950Phys. Rev. 79 802
Kelley M C and Carlson C W 1974EOS Trans. AGU 55 381
Kelley M Cet al 1976Geophys. Res. Lett. 3 448
McClure J P 1973Paper presented at first Lloyd Berkner Symp. AGU Univ. Texas Dallas Texas
Perkins F W 1973J. Geophys. Res. 78 218
Rastogi R G and Woodman R F 1977 Communicated toAnn. de. Geophys.
Reid G C 1968J. Geophys. Res. 73 1627
Rishbeth H and Garriott O K 1969Introduction to ionospheric physics (New York: Academic Press)
Rosenbluth M N, Krall N and Rostoker N 1962Nucl. Fusion Suppl. 1 143
Woodman R F 1973A review paper presented at first Lloyd Berkner symp. AGU Univ. Texas Dallas Texas
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jain, R.K., Das, A.C. Nonlinear Rayleigh-Taylor instability in partially ionized plasma and the equatorial spread-F . Proc. Indian Acad. Sci., A (E & P Sciences) 87, 1–12 (1978). https://doi.org/10.1007/BF02839380
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02839380