Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa31a11l&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SA31A-11
Physics
2400 Ionosphere, 2415 Equatorial Ionosphere, 2435 Ionospheric Disturbances
Scientific paper
The geomagnetic storm effects on the ionospheric total electron content (TEC) are investigated by using a network of 11 global positioning system (GPS) receivers in the west-pacific equatorial anomaly region during the geomagnetic storms occurring on April 6 and July 15, 2000. The latitude-time-TEC (LTT) maps show that TEC in the northern and southern equatorial anomaly regions decrease significantly after the onset of sudden storm commencement (SSC) about 10-12 hours. Meanwhile, both of the anomaly crests simultaneously move equatorward in the April 6 storm but southward in the July 15 storm. The temporal and spatial TEC variations show that the disturbance dynamo and the seasonal variations play an important role in equatorial anomaly regions.
Chen Michelle
Lin Chaney
Liu Jinjie
Tsai Harrison
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