Physics
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1358s&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A11, pp. SMP 11-1, CiteID 1358, DOI 10.1029/2002JA009364
Physics
Magnetospheric Physics: Magnetosphere/Ionosphere Interactions, Magnetospheric Physics: Plasma Waves And Instabilities, Electromagnetics: Electromagnetic Theory, Electromagnetics: Wave Propagation (4275), Electromagnetics: Plasmas
Scientific paper
On the basis of a simple one-dimensional model, we describe the sequence of the perturbations of different quantities from the magnetopause to the ionosphere after reconnection at the magnetopause has been switched on. Reconnection produces perturbations in the electric field, current, magnetic field, and plasma velocity. These perturbations extend over a broad frequency range, and each frequency band propagates at its group velocity to the ionosphere. The first perturbations to arrive at the ionosphere are mainly electromagnetic oscillations carried by the highest frequencies, whose front can propagate as fast as the speed of light if reconnection has switched on sufficiently suddenly, although it may propagate at the whistler-mode speed if reconnection switches on only on the whistler-mode timescale. The front of oscillations predominantly in the current arrives next, at the whistler-mode speed. Perturbations predominantly in the magnetic field and the velocity as well as nonoscillatory (step-function) changes of all the quantities arrive last, at the Alfvén speed. The ionosphere starts responding after the arrival of the electromagnetic front, although the dominant changes occur after the arrival of the Alfvén front.
Song Paul
Vasyliūnas Vytenis M.
No associations
LandOfFree
Solar wind-magnetosphere-ionosphere coupling: Signal arrival time and perturbation relations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar wind-magnetosphere-ionosphere coupling: Signal arrival time and perturbation relations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar wind-magnetosphere-ionosphere coupling: Signal arrival time and perturbation relations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-949873