TY - JOUR
T1 - Solar flare effects at Ebre
T2 - Unidimensional physical, integrated model
AU - Curto, J. J.
AU - Amory-Mazaudier, C.
AU - Torta, J. M.
AU - Menvielle, M.
PY - 1994
Y1 - 1994
N2 - A great increase of the ionizing radiation during solar flares results in an immediate increase of the ionization production rate, electron densities and electric currents in the ionosphere, followed simultaneously by disturbances of the magnetic elements at ground level (solar flare effects (sfe)). In this paper an attempt is made to model sfe phenomena combining several semiempirical models derived from satellite and radar data obtained during the last two decades. The model allows us to quantify model values of the phase difference between the sfe and Sq vectors, for comparison to the measurable quantity. It explains the cause of the change in magnetic perturbation during a flare at Ebre Observatory (40.8° latitude N, 0.5° longitude E). Large phase shift of the magnetic vector observed before noon, result from a descent of the "center of gravity" of the conducting mass that, combined with a very different regime of neutral winds in the lower and in the middle parts of the dynamo region, produce a change in the direction of the integrated currents.
AB - A great increase of the ionizing radiation during solar flares results in an immediate increase of the ionization production rate, electron densities and electric currents in the ionosphere, followed simultaneously by disturbances of the magnetic elements at ground level (solar flare effects (sfe)). In this paper an attempt is made to model sfe phenomena combining several semiempirical models derived from satellite and radar data obtained during the last two decades. The model allows us to quantify model values of the phase difference between the sfe and Sq vectors, for comparison to the measurable quantity. It explains the cause of the change in magnetic perturbation during a flare at Ebre Observatory (40.8° latitude N, 0.5° longitude E). Large phase shift of the magnetic vector observed before noon, result from a descent of the "center of gravity" of the conducting mass that, combined with a very different regime of neutral winds in the lower and in the middle parts of the dynamo region, produce a change in the direction of the integrated currents.
UR - http://www.scopus.com/inward/record.url?scp=5844359416&partnerID=8YFLogxK
U2 - 10.1029/94JA02070
DO - 10.1029/94JA02070
M3 - Article
AN - SCOPUS:5844359416
SN - 2169-9402
VL - 99
SP - 23289
EP - 23296
JO - Journal of Geophysical Research: Space Physics
JF - Journal of Geophysical Research: Space Physics
IS - 12
ER -