Radial distribution of the inner magnetosphere plasma pressure using low-altitude satellite data during geomagnetic storm: the March 1-8, 1982 Event

Plasma pressure distribution in the inner magnetosphere is one of the key parameters for understanding the main magnetospheric processes including geomagnetic storms and substorms. However, the pressure profiles obtained from in-situ particle measurements by the high-altitude satellites do not allow tracking the pressure variations related to the storms and substorms, because a time interval needed to do this generally exceeds the characteristic times of them. On contrary, fast movement of low-altitude satellites makes it possible to retrieve quasi-instantaneous profiles of plasma pressure along the satellite trajectory, using the fluxes of precipitating particles. For this study, we used the Aureol-3 satellite data for plasma pressure estimation, and the IGRF, Tsyganenko 2001 and Tsyganenko 2004 storm time geomagnetic field models for the pressure mapping into the equatorial plane. It was found that during quiet geomagnetic condition the radial pressure profiles obtained coincide with the profiles, obtained previously from the high-altitude measurements. On the contrary, it was found that during geomagnetic storm the plasma pressure profiles became sharper; the position of the maximum of plasma pressure corresponds to expected one for given Dst minimum; the maximum value of inner magnetosphere static pressure correlates with the solar wind dynamic pressure. Increase in the plasma pressure profiles indicates the possibility to consider the interchange instability as one of important factors for the development of the main phase of geomagnetic storm.Comment: Accepted in Advances in Space Researc

The Earth: Plasma Sources, Losses, and Transport Processes

This paper reviews the state of knowledge concerning the source of magnetospheric plasma at Earth. Source of plasma, its acceleration and transport throughout the system, its consequences on system dynamics, and its loss are all discussed. Both observational and modeling advances since the last time this subject was covered in detail (Hultqvist et al., Magnetospheric Plasma Sources and Losses, 1999) are addressed

Fundamental characteristics of thickness vibrations of langasite plates for baw resonators

Based on theoretical and experimental investigations further possibility of La3Ga5SiO14 - langasite (LGS) application for BAW resonators is described. Anisotropy of frequency coefficients Nf, temperature- frequency coefficients (TCF), electromechanical coupling coefficients (ks) for these modes of vibration of langasite has been investigated

Ion and electron kappa-distribution functions along the plasma sheet - Time intervals data.

<p>Data uploaded to comply with AGU Publications Data Policy.</p> <p>Article:<br> "Ion and electron kappa-distribution functions along the plasma sheet",<br> by C.M Espinoza, M. Stepanova, P.S. Moya, E. Antonova & J.A. Valdivia.<br> Submitted to Geophysical Research Letters.</p> <p>Files:<br> Contain the start of the 12-minute intervals that were considered for the results.</p> <p>See README.TXT for more details.</p> <p> </p