Investigating Perturbation Electric Fields and Their Effects on the Coupled Low-, Mid- and High-latitude Ionosphere

2015 ◽  
Author(s):  
Ildiko Horvath
Keyword(s):  
Electric Fields ◽  
High Latitude ◽  
High Latitude Ionosphere

scholarly journals The relationship between electric fields, conductances and currents in the high-latitude ionosphere: a statistical study using EISCAT data

1999 ◽  
Vol 17 (1) ◽  
pp. 43-52 ◽  
Author(s):  
J. A. Davies ◽  
M. Lester
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
High Latitude ◽  
Statistical Study ◽  
Field Vector ◽  
Relative Contribution ◽  
High Latitude Ionosphere ◽  
The Times ◽  
The Relationship ◽  
Uhf Radar

Abstract. The relationship between electric fields, height-integrated conductivities and electric currents in the high-latitude nightside electrojet region is known to be complex. The tristatic nature of the EISCAT UHF radar facility provides an excellent means of exploring this interrelationship as it enables simultaneous estimates to be made of the full electric field vector and the ionospheric Hall and Pedersen conductances, further allowing the determination of both field-perpendicular electric current components. Over 1300 h of common programme observations by the UHF radar system provide the basis of a statistical study of electric fields, conductances and currents in the high-latitude ionosphere, from which preliminary results are presented. Times at which there is significant solar contribution to the ionospheric conductances have been excluded by limiting the observations according to solar zenith angle. Initial results indicate that, in general, the times of peak conductance, identified from the entire set of EISCAT observations, do not correspond to the times of the largest electric field values; the relative contribution of ionospheric conductance and electric field to the electrojet currents therefore depends critically on local time, a conclusion which corroborates work by previous authors. Simultaneous measurements confirm a tendency for a decrease in both Hall and Pedersen conductances to be accompanied by an increase in the electric field, at least for moderate and large electric field value, a tendency which is also identified to some extent in the ratio of the conductances, which acts as an indicator of the energy of precipitating particles.Key words. Ionosphere (auroral ionosphere; electric fields and currents)

Electric Fields and Electrostatic Potentials in the High Latitude Ionosphere

1980 ◽  
pp. 281-291 ◽  
Author(s):  
P. M. Banks ◽  
J.-P. St. Maurice ◽  
R. A. Heelis ◽  
W. B. Hanson
Keyword(s):  
Electric Fields ◽  
High Latitude ◽  
Electrostatic Potentials ◽  
High Latitude Ionosphere

Electric fields and potential patterns in the high-latitude ionosphere for different situations in interplanetary space

1984 ◽  
Vol 32 (7) ◽  
pp. 907-923 ◽  
Author(s):  
Y.I. Feldstein ◽  
A.E. Levitin ◽  
D.S. Faermark ◽  
R.G. Afonina ◽  
B.A. Belov ◽  
...  
Keyword(s):  
Electric Fields ◽  
High Latitude ◽  
Interplanetary Space ◽  
High Latitude Ionosphere

The structure of the mid- and high-latitude ionosphere during the November 2004 storm event obtained from GPS observations

2007 ◽  
Vol 55 (4) ◽  
pp. 490-508 ◽  
Author(s):  
Andrzej Krankowski ◽  
Irk I. Shagimuratov ◽  
Lubomir W. Baran ◽  
Galina Yakimova
Keyword(s):  
High Latitude ◽  
Storm Event ◽  
High Latitude Ionosphere ◽  
Gps Observations
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