The ionospheric responses in the equatorial anomaly region during the 6-7 April 2000 ionospheric storm

Details The ionospheric responses in the equatorial anomaly region during the 6-7 April 2000 ionospheric storm The ionospheric responses in the equatorial anomaly region during the 6-7 April 2000 ionospheric storm

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsa41a..05l&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SA41A-05

Physics

2487 Wave Propagation (6934), 2415 Equatorial Ionosphere, 2437 Ionospheric Dynamics

Scientific paper

The great magnetic storm on 6-7 April 2000 generated ionospheric disturbances in the equatorial anomaly region. The ionosonde at Chung-Li (24.9›XN, 121›XE) and the GPS receivers observed the ionosphere during this period. The variations of the ionospheric parameters, NmF2 (plasma density of the F-peak), hmF2 (height of the F-peak) and h­ÝF (minimum virtual height of the F-layer), demonstrate that a traveling atmospheric disturbance (TAD) affects the ionosphere in this region. The simultaneous total electron content (TEC) derived from GPS shows that the crest of equatorial anomaly region moves equatorward. To further understand the causality of ionosphere response, the TIEGCM (Thermosphere/Ionosphere General Circulation Model) has been applied to simulate this event. The agreement and discrepancy between the simulated and observed results will be illustrated and discussed.

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