Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields

Details Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jatp...49..201v&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 49, Feb. 1987, p. 201-207.

Physics

11

Electric Fields, Equatorial Electrojet, Ionospheric Currents, Radar Data, Backscattering, Ionospheric Electron Density, Magnetic Disturbances, Phase Velocity, Very High Frequencies

Scientific paper

From VHF backscatter radar measurements at Thumba of the phase velocities of type II irregularities in the equatorial electrojet (EEJ), electric field values are estimated for different times of the day. Using the electric field values thus deduced and the Pedersen and Hall conductivities calculated using model values of electron densities and the collision frequencies of ions and electrons, the height integrated current intensity in the EEJ is estimated. The surface level geomagnetic field perturbation Delta-H produced by this ionospheric current is then calculated. The calculated values of Delta-H are compared with observed values of Delta-H (after substracting the magnetospheric contribution of Dst) for a number of days. The comparisons show good agreement between observed Delta-H values and those calculated from measured electric fields. The agreement is found to be good even when type I irregularities are present at higher altitudes in the EEJ. This comparative study demonstrates the validity of estimating electric field values from VHF radar measurements and it indicates the possibility of deducing electric field values from ground level Delta-H values, at least for statistical studies.

Affiliated with

Also associated with

No associations

Rating

Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric fields and currents in the equatorial electrojet deduced from VHF radar observations. III - Comparison of observed Delta-H values with those estimated from measured electric fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1013136