Project VARIANT: measuremets of electromagnetic fields and currents in the ionospheric plasmas aboard the «Sich-1M»satellite

1Korepanov, V, 2Negoda, O, 3Lizunov, G, 4Alleyne, H, 4Balikhin, M, 5Blecky, J, 1Dudkin, F, Fedorov, A, 5Juchniewich, J, 6Klimov, S, 7Krasnoselskikh, V, 7Lefeuvre, F
1Lviv Centre of the Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Lviv, Ukraine
2State Space Agency of Ukraine, Kyiv, Ukraine
3Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
4Sheffield University, Amy Johnson Building, Mappin Street, Sheffield, SI 3JD, United Kingdom
5Space Research Centre PAN, Warsaw, Poland
6Space Research Institute of the Russian AS, Moscow, Russia
7LPCE/CNRS, Orleans, France
Kosm. nauka tehnol. 1999, 5 ;(5):03–08
Publication Language: Ukrainian
VARIANT is a joint international space experiment on current density measurements in the ionosperic-magnetospheric plasmas. The experiment will be performed aboard the Ukrainian remote-sensing satellite Sich-lM which will be launched in 2002 into the polar circular orbit with an inclination of about 83° and altitude of 670±30 km. The scientific payload includes three instruments for the registration of space current density: split Langmuir probe, Rogovski coil, and Faraday cup. The first two instruments are specially designed to measure the current density variations, the last one allows the measurements of particle fluxes. The equipment includes also the sensors for measurements of the electric and magnetic field fluctuations in the frequency range from 0.1 Hz to 40 kHz. These measurements are complementary of the current density ones and they will be used to make comparison between direct and implicit estimates of the distribution and fine structure of currents. The next goal of the VARIANT experiment is the observation of the fine structure of currents in space with the simultaneous ground-based measurement of the ionospheric convection in the E and F layers by the SuperDARN system of radars. The scientific objectives of the VARIANT mission are discussed.
Keywords: ionosperic-magnetospheric plasmas, project VARIANT, Sich-lM
1.  Chmyrev V., Bilichenko S., Pokhotelov O., et al. Alfven vortices and related phenomena in the ionosphere and magnetosphere. Phys. Scripta, 38, P. 841 (1988).
2.  Korepanov V., Dudkin F., Berkman R. New technique for future wave experiments. Magnetospheric research with advanced techniques: Abstracts, p. 19, China, Beijing (April, 1996).
3.  Korepanov V., Dudkin F. Comparative analysis of current density meters operating in space plasmas. Adv. Space Res., 23 (8), 1541 — 1544 (1999).
4.  Krasnosel'skikh V., Natanzon A., Reznikov A., et al. On the possibility of supporting the multi-satellite measurements of the cluster mission with single-satellite measurements in the Regatta-Cluster Project. Space Plasma Physics Investigations by Cluster and Regatta: Proc. of an International Workshop, Ed. by E. J. Rolf, ESA SP-306, p. 79, Published by European Space Agency, (May, 1990).
5.  Krasnosel'skikh V., Natanzon A., Reznikov A., et al. Current measurements in space plasmas and the problem of separating between spatial and temporal variations in the field of a plane electromagnetic wave. Advances in Space Research, 11 (9), 37—40 (1991).
6.  Lysak R. L., Carlson C. W. The effect of microscopic turbulence on magnetosphere-ionosphere coupling. Geophys. Res. Lett., 8, P. 269 (1981).
7.  Lysak R. L., Dum S. T. Dynamics of magnetosphere-ionosphere coupling including turbulent transport. J. Geophys. Res., 88, P. 365 (1983).
8.  Titova V., Yurov E., Molchanov O., et al. Small scale structures of electric field variations and particle precipitations as observed onboard of Aureol-3 satellite. Results of the ARCAD-3 Project and of the Recent Programs in Magnetos-pheric and Ionospheric Physics: Proc., P. 447, CEPADUES-EDI-TION, France (May, 1984).
9.  Vaisberg O. On the determination of the spatial scale in the moving reference frame. Sov. J. Space Res., 12 (6), P. 1241 (1985).
10.  Vaisberg O., Klimov S., Korepanov V. Current density measurements in the shock front by means of splitted Langmuir probe. Sov. J. Space Res., 27 (3), P. 512 (1989).

11.  Volokitin A., Krasnosel'skikh V., Mishin E., et al. Sov. J. Space Res., 22, P. 749 (1984).