TY - INPR A1 - Zakharov, Venjamin E. A1 - Meister, Claudia-Veronika T1 - Acceleration and heating in the auroral magnetosphere by current driven electrostatic ion cyclotron turbulence N2 - A numerical MHD model is developed to investigate acceleration and heating of both thermal and auroral plasma. This is done for magnetospheric flux tubes in which intensive field aligned currents flow. To give each of these tubes, the empirical Tsyganenko model of the magnetospheric field is used. The parameters of the background plasma outside the flux tube as well as the strength of the electric field of magnetospheric convection are given. Performing the numerical calculations, the distributions of the plasma densities, velocities, temperatures, parallel electric field and current, and of the coefficients of thermal conductivity are obtained in a self-consistent way. It is found that EIC turbulence develops effectively in the thermal plasma. The parallel electric field develops under the action of the anomalous resistivity. This electric field accelerates both the thermal and the auroral plasma. The thermal turbulent plasma is also subjected to an intensive heating. The increase of the plasma of the Earth's ionosphere. Besides, studying the growth and dispersion properties of oblique ion cyclotron waves excited in a drifting magnetized plasma, it is shown that under non-stationary conditions such waves may reveal the properties of bursts of polarized transverse electromagnetic waves at frequencies near the patron gyrofrequency. T3 - NLD Preprints - 59 Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14959 ER - TY - INPR A1 - Volosevich, Alexandra A1 - Meister, Claudia-Veronika T1 - Nonlinear electrostatic ion-acoustic waves in the solar atmosphere N2 - Basing on recent solar models, the excitation of ion-acoustic turbulence in the weaklycollisional, fully and partially-ionized regions of the solar atmosphere is investigated. Within the frame of hydrodynamics, conditions are found under which the heating of the plasma by ion-acoustic type waves is more effective than the Joule heating. Taking into account wave and Joule heating effects, a nonlinear differential equation is derived, which describes the evolution of nonlinear ion-acoustic waves in the collisional plasma. T3 - NLD Preprints - 60 Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14968 ER - TY - BOOK A1 - Volosevich, A. V. A1 - Meister, Claudia-Veronika T1 - Nonlinear interaction of Farley-Buneman waves T3 - Preprint NLD Y1 - 1998 SN - 1432-2935 VL - 52 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Schmidt, Hans-Jürgen A1 - Baier, Frank W. A1 - Bleyer, Ulrich A1 - Hubrig, Swetlana A1 - Meister, Claudia-Veronika A1 - Schilbach, Elena A1 - Tiersch, Heinz T1 - Zum Wissenschaftler-Integrationsprogramm Y1 - 1994 ER - TY - INPR A1 - Runov, A. V. A1 - Pudovkin, M. I. A1 - Meister, Claudia-Veronika T1 - The dynamics of tail-like current sheets under the influence of small-scale plasma turbulence N2 - A 2D-magnetohydrodynamic model of current-sheet dynamics caused by anomalous electrical resistivity as result of small-scale plasma turbulence is proposed. The anomalous resistivity is assumed to be proportional to the square of the gradient of the magnetic pressure as may be valid for instance in the case of lower-hybrid-drift turbulence. The initial resistivity pulse is given. Then the temporal and spatial evolution of the magnetic and electric fields, plasma density, pressure, convection and resistivity are considered. The motion of the induced electric field is discussed as indicator of the plasma disturbances. The obtained results found using much improved numerical methods show a magnetic field evolution with x-line formation and plasma acceleration. Besides, in the current sheet, three types of magnetohydrodynamic waves occur, fast magnetoacoustic waves of compression and rarefaction as well as slow magnetoacoustic waves. T3 - NLD Preprints - 54 Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14906 ER - TY - THES A1 - Popov, K. V. A1 - Liperovsky, Viktor A. A1 - Meister, Claudia-Veronika A1 - Liperovskaya, E. V. T1 - Anthropogenic effects with weekly periodicity in the F-region ionosphere Y1 - 1996 ER - TY - JOUR A1 - Popov, K. V. A1 - Liperovsky, Viktor A. A1 - Liperovskaya, E. V. A1 - Senchenkov, S. A. A1 - Meister, Claudia-Veronika T1 - On weekly variations of the ionospheric foF2-frequency possibly caused by anthropogenic activity Y1 - 1996 ER - TY - JOUR A1 - Popov, K. V. A1 - Liperovsky, Viktor A. A1 - Liperovskaya, E. V. A1 - Meister, Claudia-Veronika T1 - Weekly anthropogenic phenomena in the E- and F-layers of the ionosphere Y1 - 1995 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Schmidt, Hans-Jürgen T1 - Jahresberichte 1996 Y1 - 1997 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. A1 - Schlegel, K. A1 - Haldoupis, Ch. T1 - Currents and turbulence in and near mid-latitude sporadic e-layers caused by strong acoustic impulses JF - Preprint NLD Y1 - 1995 VL - 11 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. A1 - Popov, K. V. A1 - Senchenkov, S. A. A1 - Oleynik, M. A. A1 - Liperovskaya, E. V. T1 - Quasi-three dimensional model of current generation in the ionosphere caused by neutral wind action on Es- clouds JF - Preprint NLD Y1 - 1995 VL - 21 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. A1 - Popov, K. V. A1 - Senchenkov, S. A T1 - Ion-acoustic instability caused by neutral wind action on sporadic E-layers Y1 - 1996 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. A1 - Popov, K. V. T1 - Ionospheric currents and turbulence caused by the influence of neutral winds on sporadic E-layers Y1 - 1996 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. T1 - Ionospheric currents and turbulence caused by the influence of neutral winds on sporadic E-layers. Model of local currrents caused by neutral winds in weakly-ionized plasmas Y1 - 1996 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Liperovsky, Viktor A. T1 - Midlatitude sporadic E-layers as current generators : two-dimensional model Y1 - 1995 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Kubyshkin, I. V. T1 - Anomalous diffusion in solar flares with ion-acoustic turbulence Y1 - 1996 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Kubyshkin, I. V. T1 - Diffusion tensor for a solar flare plasma with ion-acoustic turbulence Y1 - 1996 ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Kubyshkin, I. V. T1 - Recalculation of the diffusion tensor for plasmas with ion-acoustic turbulence Y1 - 1996 ER - TY - BOOK A1 - Meister, Claudia-Veronika A1 - Kubyshkin, I. V. T1 - Recalculation of the diffusion tensor for plasmas with ion-acoustic turbulence T3 - Preprint NLD Y1 - 1995 VL - 26 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Meister, Claudia-Veronika A1 - Kubyshkin, I. V. T1 - Diffusion of electron currents by ion-acoustic turbulence driven by the current itself Y1 - 1995 ER -