Gravity wave seeding of equatorial plasma bubbles
نویسندگان
چکیده
منابع مشابه
The correlation of longitudinal/seasonal variations of evening equatorial pre-reversal drift and of plasma bubbles
The evening pre-reversal vertical drift velocity enhancement (PRE) constitutes an important seeding mechanism for the generation of F region irregularities. Ion density and drift measurements from ROCSAT-1 and DMSP satellites are used to examine the correlation of longitudinal/seasonal (l/s) variations in the evening pre-reversal vertical drift velocity at the magnetic equator in the topside io...
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Equatorial plasma bubbles (EPBs) have been a longstanding and increasingly important subject because they cause severe scintillations in radio waves from Global Navigation Satellite System satellites. The phenomenon was found in the 1930s as irregular ionosonde observations and was termed equatorial spread F (ESF). ESF is interpreted as plasma density irregularities associated with EPBs that ha...
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The weakly nonlinear dynamics of packets of equatorial Kelvin waves is studied using singular perturbation theory applied to the shallow water wave equations. Within the limits of the perturbation theory, which is formally restricted to weak mean shear and weak nonlinearity, we derive a Nonlinear Schroedinger equation to describe the envelope of the wave packet. We find that nonlinearity has a ...
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*Correspondence: Hermann Lühr, Section 2.3, Earth’s Magnetic Field, GFZ, Telegrafenberg, Potsdam 14473, Germany e-mail: [email protected] We report magnetic field observations of the components transverse to the main field in the frequency range 1–25 Hz from times of equatorial plasma irregularity crossings. These field variations are interpreted as Alfvénic signatures accompanying intermed...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 1997
ISSN: 0148-0227
DOI: 10.1029/96ja03998