The dimensions of some horizontally-moving Es-region irregularities

Goodwin, G.L.

doi:10.1016/0032-0633(66)90105-x

Cited by 24 publications

(16 citation statements)

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“…Goodwin (1966) presented additional observations supporting Bowman's findings. Tsunoda and found that there was a positive reinforcement between altitude modulations of the E s and F layers, and pointed out that the apparent presence of a Hall-current-driven polarization process in E s layers (Haldoupis et al, 1996;Tsunoda, 1998;Tsunoda, 2001, 2002a) gave new importance to the idea of E s -F coupling.…”

Section: History and Placesupporting

confidence: 76%

“…That the horizontal spatial spectrum of E s distributions covers the mesoscale range is evidenced by the satellite born sounder experiment described by Cathey (1969) (see Fig. 1), and the spaced ionosonde experiment of Goodwin (1966). In addition, Kelley et al (2000), and Kelley and Makela (2001), have observed that a north or northwestward turning of the electric field is associated with MSTIDs, which may indicate that the resonance condition is relevant.…”

Section: Whenmentioning

confidence: 88%

“…The idea that E s layers can support mesoscale electrodynamics is also supported by spaced ionosonde experiments. For example, Goodwin (1966) reported correlated E s layer structures over as much as 1000 km.…”

Section: Model and Relevant Observationsmentioning

confidence: 99%

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Generation of mesoscale F layer structure and electric fields by the combined Perkins and Es layer instabilities, in simulations

Cosgrove

2007

Ann. Geophys.

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Abstract. The generic equilibrium configuration of the nighttime midlatitude ionosphere consists of an F layer held up against gravity by winds and/or electric fields, and a sporadic E (E s ) layer located by a sheared wind field, which experiences the same electric fields as the F layer. This configuration is subject to two large-scale (e.g. >10 km) "layer instabilities": one of the F layer known as the Perkins instability, and another of the E s layer which has been called the E s layer instability. Electric fields on scales larger than (about) 10 km map very efficiently between the E s and F layers, and the two instabilities have a similar geometry, allowing them to interact with one another. As shown through a linear growth rate analysis, the two most important parameters governing the interaction are the relative horizontal velocity between the E s and F layers, and the integrated conductivity ratio H / P F , where H and P F are the field line integrated Hall conductivity of the E s layer, and the field line integrated Pedersen conductivity of the F layer, respectively. For both large and small relative velocities the growth rate was found to be more than double that of the Perkins instability alone, when

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Section: History and Placesupporting

confidence: 76%

Section: Whenmentioning

confidence: 88%

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Generation of mesoscale F layer structure and electric fields by the combined Perkins and Es layer instabilities, in simulations

Cosgrove

2007

Ann. Geophys.

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“…Conversely, Bowman [1960Bowman [ , 1968 found that when an Es band was detected, a TID was present in 11 out of 13 cases (85 percent). Similarly, Goodwin [1966] found that when an Es front appeared to be drifting, an F-region front preceded it in 12 of 16 cases (75 percent).…”

Section: Introductionmentioning

confidence: 79%

Coupled electrodynamics in the nighttime midlatitude ionosphere

Tsunoda¹,

Cosgrove²

2001

Geophysical Research Letters

123

133

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Abstract. We describe a new, self-consistent scenario in which sporadic-E doublets, height bands of upward-displaced F-layer profiles, F-region plasma depletions, and radar backscatter plumes, are all manifestations of a coupled electrodynamical response by the nighttime midlatitude ionosphere to the presence of a traveling ionospheric disturbance (TID). We show that the response consists of (1) formation of image plasma structure in the E region, (2) initiation of a Hall-current-driven polarization process by the E-region plasma structure, and (3) mapping of the polarization electric field to the F region, where it strengthens the electrical properties of the TID that initiated the E-region processes. This scenario provides ready answers for several, hitherto puzzling, questions and a basis for new directions on this research topic.

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“…Among them, Es-a type is characterized by the spreading of the trace in range and commonly occurs in auroral region. Nevertheless, with more and more ionosonde observations, the range spread Es traces are also found in mid-, low-and equatorial latitude regions (Bowman, 1960;Goodwin, 1966;Goodwin and Summers, 1970;From and Whitehead, 1986;Hussey et al, 1998;Maruyama et al, 2006). A number of mechanisms responsible for the formation of the range spread Es trace have been proposed.…”

Section: Introductionmentioning

confidence: 95%

Coordinated sporadic E layer observations made with Chung-Li 30MHz radar, ionosonde and FORMOSAT-3/COSMIC satellites

Chu

Brahmanandam

Wang

et al. 2011

Journal of Atmospheric and Solar-Terrestrial Physics

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The dimensions of some horizontally-moving Es-region irregularities

Cited by 24 publications

References 10 publications

Generation of mesoscale <I>F</I> layer structure and electric fields by the combined Perkins and <I>E<sub>s</sub></I> layer instabilities, in simulations

Generation of mesoscale <I>F</I> layer structure and electric fields by the combined Perkins and <I>E<sub>s</sub></I> layer instabilities, in simulations

Coupled electrodynamics in the nighttime midlatitude ionosphere

Coordinated sporadic E layer observations made with Chung-Li 30MHz radar, ionosonde and FORMOSAT-3/COSMIC satellites

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The dimensions of some horizontally-moving Es-region irregularities

Cited by 24 publications

References 10 publications

Generation of mesoscale &lt;I&gt;F&lt;/I&gt; layer structure and electric fields by the combined Perkins and &lt;I&gt;E&lt;sub&gt;s&lt;/sub&gt;&lt;/I&gt; layer instabilities, in simulations

Generation of mesoscale &lt;I&gt;F&lt;/I&gt; layer structure and electric fields by the combined Perkins and &lt;I&gt;E&lt;sub&gt;s&lt;/sub&gt;&lt;/I&gt; layer instabilities, in simulations

Coupled electrodynamics in the nighttime midlatitude ionosphere

Coordinated sporadic E layer observations made with Chung-Li 30MHz radar, ionosonde and FORMOSAT-3/COSMIC satellites

Contact Info

Product

Resources

About

Generation of mesoscale <I>F</I> layer structure and electric fields by the combined Perkins and <I>E<sub>s</sub></I> layer instabilities, in simulations

Generation of mesoscale <I>F</I> layer structure and electric fields by the combined Perkins and <I>E<sub>s</sub></I> layer instabilities, in simulations