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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.40 [2011] >
IJRSP Vol.40(6) [December 2011] >
| Title: | Time/level of ionospheric response to geomagnetic storm of 25-26 July 1981 at different latitudes |
| Authors: | David, T W
Akintola, A N
Adekoya, B J |
| Keywords: | Solar wind plasma
Geomagnetic storm
foF2 depletion |
| Issue Date: | Dec-2011 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 92.60.Qx; 94.20.Vv |
| Abstract: | The reaction of the ionosphere at different
latitudes may be quite different during the same storm. In this light, this
paper investigates time/level of response of the upper, mid and lower latitudes
stations of two different regions to an intense geomagnetic storm. The
parameters solar wind plasma and imbedded interplanetary magnetic field (IMF),
and foF2 have been investigated. The data has been obtained from global network
of ionosondes. The analysis of solar wind plasma show that the event on 25-26
July 1981 is a type 2 storm, i.e. the ratio of the magnitude of the second to
first Dst (separated by at least 3 hours) decrease is less than 0.9. The
analysis of the foF2 data shows that the depletion at the time of storm
occurred at a greater percentage in the upper latitude than at the mid
latitude, and very small at the lower latitudes. Furthermore, there was
simultaneous depletion of foF2 at all latitudes. |
| Page(s): | 311-319 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.40(6) [December 2011]
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