English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Variations in the Plasma Parameters of the Earth’s Magnetotail during Substorm Initiation

Kozak, L. V., Petrenko, B. A., Kronberg, E. A., Grigorenko, E. E., Kozak, P. M., & Reka, K. D. (2020). Variations in the Plasma Parameters of the Earth’s Magnetotail during Substorm Initiation. Kinematics and Physics of Celestial Bodies, 36(2), 94-102. doi:10.3103/S0884591320020051.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0006-9FFF-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-A000-4
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Kozak, L. V., Author
Petrenko, B. A., Author
Kronberg, Elena A.1, Author              
Grigorenko, E. E., Author
Kozak, P. M., Author
Reka, K. D., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

Content

show
hide
Free keywords: -
 Abstract: A chain of events accompanying the occurrence of a substorm in the Earth’s ionosphere and magnetosphere is considered. Features of geomagnetic pulsations and mechanisms of their generation are indicated. Measurements of magnetic field fluctuations from fluxgate magnetometers, as well as the data on temperature, velocity, and concentration of electrons, and different types of ions from the PEACE and CIS-CODIF experiments of the Cluster-2 space mission, have been analyzed. It was found that a significant increase in temperature, velocity fluctuations, and concentration is observed during the initiation of a substorm that was accompanied by dipolarization (sharp change in the magnetic field configuration from the elongated tail-like force lines to a more dipole structure). A time delay in the heating of protons and oxygen ions, as well as in the concentration variations, was detected. The comparison of wave characteristics for different pressures was carried out using wavelet analysis. The magnetic field pressure, as well as dynamic and thermal pressure for different types of particles, was considered. Pc5 and strong Pc4 pulsations, as well as direct and inverse cascades, were observed in the fluctuations of the magnetic field pressure and thermal pressure of electrons and protons. The results point to a significant role of kinetic effects in the complex chain of processes in the Earth’s magnetosphere during the explosive phase of a substorm.

Details

show
hide
Language(s): eng - English
 Dates: 2020
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.3103/S0884591320020051
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Kinematics and Physics of Celestial Bodies
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 36 (2) Sequence Number: - Start / End Page: 94 - 102 Identifier: -