HR: 0800h
AN: GP11D-0854    [Abstracts]
TI: Solar Flare Effect and Storm Sudden Commencement Event in Geomagnetic H,Y and Z Fields at Euro-African Observatories.
AU: * Okeke, F N
EM: franciscaokeke@yahoo.com
AF: University of Nigeria, Nsukka, Department of Physics and Astronomy, Nsukka, Enu 20009 United States
AB: Solar Flare effect and Storm Sudden commencement event in Geomagnetic H, Y and Z fields at Euro-African Observatories. Okeke, F. N. and Okpala K. C. Department of Physics and Astronomy P. O. Box 3238, University of Nigeria, Nsukka. Abstract Variations in the three components of geomagnetic field were observed at twenty-two Euro-African geomagnetic observatories, during Euro-African the solar flare that occured on the 6th of May 1998 8:05 UT and storm sudden commencement that took place on May 7th 1998 at 12.03UT. The geomagnetic field on 6, May 1998 was quiet, but correlations between the intensities of geomagnetic s.f.e. and that of Sq current system show that they are of two different origin. Strong responses of Z and Y fields to solar activity was noted. From the estimation of the contributions of D-and E-layer to the geomagnetic s.f.e it was inferred that both of these layers contribute to the geomagnetic s.f.e almost equally.
DE: 1500 GEOMAGNETISM AND PALEOMAGNETISM
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2004 AGU Fall Meeting