ICAE International Commission on Atmospheric Electricity

ICAE 2003 Versailles

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Benjamin Franklin

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Friday 11th June



Session H1 Global Electrical Circuit

11:00 S. Anisimov
Keynote: Global Electric Circuit and lower Atmospheric Electricity

S. S. Davydenko, E. A. Mareev, T. C. Marshall, and M. Stolzenburg
On the Calculation of Electric Fields and Currents of Mesoscale Convective Systems and Their Influence on the Global Electrical Circuit

11:45 E. A. Kasatkina, O. I. Shumilov, and A. G. Struev
Heliogeomagnetic effects on atmospheric electricity at high latitudes
12:00 R. G. Harrison
Climate change and long-term variations in the atmospheric electrical system
12:15 L. V. Grunskaya, V. A. Efimiv, V. V. Isakevich and I. N. Gavrilov
Atmospherical electrical field and its interaction with global geophysical and astrophysical processes


 Global Electric Circuit and lower Atmospheric Electricity

Sergey V. Anisimov
Borok Geophysical Observatory, Russian Academy of Sciences, Borok, Yaroslavl, 152742 RF
E-mail: svan@borok.adm.yar.ru


This short report describes some recent results of global electric circuit investigations. The experimental foundation of global electric circuit conception is discussed. The main origins of global electric circuit formation are examined. The electrodynamical properties of fair-weather electricity are characterized with standpoint of universal spectra and aeroelectrical structure availability. The global electric circuit is represented as an aggregation of multi-scale electrical systems.


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Heliogeomagnetic effects on atmospheric electricity at high latitudes

E.A. Kasatkina, O.I. Shumilov, A.G. Struev Polar
Geophysical Institute of Kola Science Center RAS, 184209 Apatity, Russia


Results of atmospheric electricity observations made at Apatity (geomagnetic latitude: 63.8) are presented. The observations consisted of measurements of atmospheric potential gradient, positive conductivity, and negative conductivity. The measurements were made by a high-latitude computer-aided complex installed at Apatity in 2001. It consists of three spatially placed microbarographs for measurements of atmospheric waves, a device for air conductivity measurement and a device for measurement of vertical component of atmospheric electric field. The computer-aided system permits to get information with a frequency of five times per second.

The ground-level atmospheric electric field was found to have systematic local diurnal and seasonal variations. According to our results there is a well defined wintertime maximum in local atmospheric electric field variations. Diurnal variations of atmospheric potential gradient was found to have a departure from the Carnegie curve. A distinct difference in the diurnal variation of atmospheric electric field has been observed also between disturbed and extremely quiet geomagnetic conditions. These high-latitude electric field variations appear to be the result of solar wind-magnetosphere-ionosphere coupling. Besides, we have compared the diurnal course of the atmospheric electric field with the variation of calculated effective Bz component of the interpalnetary magnetic field arising due to variation of the geomagnetic dipole axis inclination during the Earth's rotation. The effective Bz is responsible for the additional global electric field appearance in the magnetosphere.


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Atmospherical electrical field and its interaction with global geophysical and astrophysical processes

Grunskaya L.V., Efimiv V.A., Isakevich V.V., Gavrilov I.N.


Expeditional work on the experimental ground of Vladimir State University situated in a distance of 50 km from Vladimir, on the synchronous monitoring of the electrical, magnetic and gravitational fields in the Earth-ionosphere cavity with a multiple-response receiver will be the main experimental base for solving the general problem of the project connected with the complex experimental investigations of the interrelation mechanism of the electrical and magnetic Earth fields of the ELF - range (from 10-5 to 10 Hz) with periodical gravitational fields of geophysical and astrophysical origin and also with solar magnetospheric disturbance. The main source of the ELF-range electromagnetic energy is thunderstorm activity on the Earth. It is considered that the existing electromagnetic Earth field with intensity of 100 to 120 V/m is realized by global thunderstorm activity. The source of electromagnetic oscillations in the Earth-ionosphere cavity is also ELF radiation, going through the ionosphere from the space. The cosmic nature of electromagnetic oscillations caused with direct and indirect oscillations of the geomagnetic field in the frequency range from some mHz to some Hz, was settled with high reliability. There was realized a method of the value of the correlative-spectral analysis results according to the multiple monitoring of the fields of different nature joining data for several years with the help of the value of the probability of error of the first kind. The catalogues of the electrical and magnetic field recording of the Earth lower layer were created for 1997 to 2001. The receiving catalogues of the spectra according to the results of the experimental investigations for 1997 to 2001 allowed to expose to date 2 general groups of the sources of the electromagnetic fields in ELF-range (0.0001 to 0.00001 Hz): diurnal Earth rotation and harmonics of this frequency; moon-solar tides.

The work is carried out with supporting of grants RFBR N00-05-79028, N00-05-64652, N02-05-06255, N02-05-79011, N00-05-79020i.


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Last Update : June 3, 2003
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