Results 281 to 290 of about 11,557,211 (324)

Three-Dimensional Modeling of Equatorial Spread F

2011
The Naval Research Laboratory (NRL) has recently developed a three-dimensional code to study equatorial spread F (ESF). The code is based on the comprehensive NRL 3D ionosphere model SAMI3 and includes a potential equation to self-consistently solve for the electric field.
J.D. Huba, G. Joyce, J. Krall
openaire   +1 more source

Equatorial spread-F: a review of recent experimental results

Journal of Atmospheric and Terrestrial Physics, 1981
The near space region of the Earth is an excellent laboratory in which to study large scale plasma instabilities. This is particularly true in the equatorial ionosphere where the background conditions are fairly well understood, as opposed to the auroral zone ionosphere for example, where an extremely complex interaction occurs between the ionosphere ...
Michael C Kelley, J.P McClure
openaire   +1 more source

ALTAIR Radar Study of Equatorial Spread F.

1981
Abstract : The results of research on equatorial spread-F (ESF) phenomena obtained by using two backscatter radars, ALTAIR and TRADEX, are summarized. The radar measurements were made in support of three rocket campaigns conducted from the Kwajalein Atoll during the summers of 1977 through 1979.
openaire   +1 more source

On seeding equatorial spread F: Parallel or transverse transport?

Journal of Atmospheric and Solar-Terrestrial Physics, 2013
Abstract There is considerable current interest in how the spawning of equatorial plasma bubbles (EPBs) is affected by the nature of the plasma-seeding process. The process most likely involves an atmospheric gravity-wave and coupling of its wind perturbations to the plasma in the bottomside of the F layer. Neutral-ion coupling can occur either via
openaire   +1 more source

Control of equatorial spread-F by the F-layer height

Journal of Atmospheric and Terrestrial Physics, 1966
Abstract The dependence of equatorial spread-F occurrence on the height of the layer is examined in detail in the case of two equatorial stations viz. Kodaikanal and Huancayo, lying close to the magnetic equator. The percentage of occurrence associated with different heights is found to vary with time, season and longitude.
openaire   +1 more source

A Comparative Analysis of Equatorial Spread F and VHF Scintillation

1982
Abstract : This report describes a series of simultaneous high-resolution ionosonde and VHF scintillation measurements made a Kwajalein during August 1981, a period of intense equatorial spread-F. The scintillation data were processed to measure the Doppler spread, which was found to be closely correlated with a recurrent ionogram pattern of oblique ...
Charles L. Rino, Roland T. Tsunoda
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Effects of the vertical plasma drift velocity on the generation and evolution of equatorial spread F

, 1999
B. Fejer, L. Scherliess, E. R. de Paula
semanticscholar   +1 more source

Comparison of Observed Equatorial Spread-F Statistics between Two Longitudinally Separated Magnetic Equatorial Stations and the IRI-2016 Model during Low and High Solar Activities

Advances in Space Research, 2022
P. Thammavongsy, P. Supnithi, L. Myint, S. Sripathi, K. Hozumi, D. Lakanchanh   +5 more
semanticscholar   +1 more source

Energetics of and a source of energy for equatorial spread-F events

Journal of Atmospheric and Terrestrial Physics, 1974
Abstract It is shown that in spread- F events the consumption of energy may be comparable to that put into the atmosphere by solar EUV at the same altitude. Waves generated by the supersonic motion of the terminator with respect to atmospheric winds are suggested to be a significant source of energy for the events.
openaire   +1 more source

Linear theory and modeling of the Rayleigh‐Taylor instability leading to the occurrence of equatorial spread F

, 1996
P. J. Sultan
semanticscholar   +1 more source