Anomalous transport at the boundaries between moving plasma and fixed magnetic field is a common ... more Anomalous transport at the boundaries between moving plasma and fixed magnetic field is a common problem for space laboratory and astrophysical plasmas Intermittent fluctuations represent one of the most promising candidate for the means of the turbulent transport In their presence the plasma flow is concentrating into jets with anomalously high ram pressure and flow density The jets looking to
The current distribution in the nightside magnetosphere during a substorm event on Dec 10, 1996, ... more The current distribution in the nightside magnetosphere during a substorm event on Dec 10, 1996, is modeled using a local magnetic field model and two empirical large-scale magnetic field models. The empirical models utilizing both high-altitude spacecraft data and low-altitude energetic particle measurements suggest that a thin current sheet, which formed during the substorm growth phase extended from the inner magnetotail at least out to 20-30 R E . It is shown that the results from the three different modeling approaches are consistent with each other, which is an important test for the validity of the empirical modeling methods. The models are compared and contrasted and their validity and use in magnetospheric studies are addressed.
We study the statistical properties of nonlinear magnetic and plasma fluctuations over polar cusp... more We study the statistical properties of nonlinear magnetic and plasma fluctuations over polar cusps and compare them with that of dayside magnetopause and near tail. Interball-1 and Polar data are normalized by the solar wind (SW) dynamic pressure and parameterized by the Bx, By and Bz in SW and by the magnetic dipole tilt. The latter controls the magnetopause (MP) shape over cusp and the geometry of highly disturbed regions: (a) for the positive tilts (the dipole inclined towards the Sun) the disturbed magnetosheath (MSH) plasma locates over indented MP, (b) for the negative tilts the turbulence is seen from both sides of the smooth MP, having less pronounced higher-frequency component. In some Interball-1 cases and regularly in Polar data quite strong disturbances are seen deep in the cusp for any tilt angles during highly dynamic SW behavior. POLAR usually tracks the bottom of the disturbed region where the fluctuation energy is diminished and magnetic perturbations have compressi...
We study high - latitude boundary layer (BL) for low magnetic shear magnetopause (MP). I terball ... more We study high - latitude boundary layer (BL) for low magnetic shear magnetopause (MP). I terball detects demagnetized heated plasma of magnetosheath (MSH)n origin in `plasma balls' (PB, scale ~ few RE) The PB are seen mostly for negative dipole tilts. CLUSTER sheds a new light on the BL structure: the normal to MP electric field can account for separation
Anomalous transport at the boundaries between moving plasma and fixed magnetic field is a common ... more Anomalous transport at the boundaries between moving plasma and fixed magnetic field is a common problem for space laboratory and astrophysical plasmas Intermittent fluctuations represent one of the most promising candidate for the means of the turbulent transport In their presence the plasma flow is concentrating into jets with anomalously high ram pressure and flow density The jets looking to
The current distribution in the nightside magnetosphere during a substorm event on Dec 10, 1996, ... more The current distribution in the nightside magnetosphere during a substorm event on Dec 10, 1996, is modeled using a local magnetic field model and two empirical large-scale magnetic field models. The empirical models utilizing both high-altitude spacecraft data and low-altitude energetic particle measurements suggest that a thin current sheet, which formed during the substorm growth phase extended from the inner magnetotail at least out to 20-30 R E . It is shown that the results from the three different modeling approaches are consistent with each other, which is an important test for the validity of the empirical modeling methods. The models are compared and contrasted and their validity and use in magnetospheric studies are addressed.
We study the statistical properties of nonlinear magnetic and plasma fluctuations over polar cusp... more We study the statistical properties of nonlinear magnetic and plasma fluctuations over polar cusps and compare them with that of dayside magnetopause and near tail. Interball-1 and Polar data are normalized by the solar wind (SW) dynamic pressure and parameterized by the Bx, By and Bz in SW and by the magnetic dipole tilt. The latter controls the magnetopause (MP) shape over cusp and the geometry of highly disturbed regions: (a) for the positive tilts (the dipole inclined towards the Sun) the disturbed magnetosheath (MSH) plasma locates over indented MP, (b) for the negative tilts the turbulence is seen from both sides of the smooth MP, having less pronounced higher-frequency component. In some Interball-1 cases and regularly in Polar data quite strong disturbances are seen deep in the cusp for any tilt angles during highly dynamic SW behavior. POLAR usually tracks the bottom of the disturbed region where the fluctuation energy is diminished and magnetic perturbations have compressi...
We study high - latitude boundary layer (BL) for low magnetic shear magnetopause (MP). I terball ... more We study high - latitude boundary layer (BL) for low magnetic shear magnetopause (MP). I terball detects demagnetized heated plasma of magnetosheath (MSH)n origin in `plasma balls' (PB, scale ~ few RE) The PB are seen mostly for negative dipole tilts. CLUSTER sheds a new light on the BL structure: the normal to MP electric field can account for separation
Uploads