Variations in the total electron content during the powerful typhoon of August 5-11, 2006, near the southeastern coast of China

Details Variations in the total electron content during the powerful typhoon of August 5-11, 2006, near the southeastern coast of China Variations in the total electron content during the powerful typhoon of August 5-11, 2006, near the southeastern coast of China

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ge%26ae..48..674a&link_type=abstract

Geomagnetism and Aeronomy, Volume 48, Issue 5, pp.674-679

Computer Science

3

94.20.Ji, 92.60.Ax

Scientific paper

The variations in the total electron content (TEC), obtained from the data of 11 ground-based GPS stations in the region (5°S-80°N; 110-160°E) in the period August 2-15, 2006, have been analyzed in order to search for possible ionospheric manifestations of the SAOMAI powerful typhoon (August 5-11, 2006) near the south-eastern coast of China. The global TEC maps (GIM) have also been used. In the region of the typhoon action during the magnetic storm of August 7, 2006, an intensification of the TEC variations in the evening local time within the 32-128 min periods range was detected. However, this effect was most probably caused by the dynamics of the irregular structure of the equatorial anomaly and by the disturbed geomagnetic situation ( Kp ˜ 3-6, Dst varied from -74 to -153 nT). The analysis of the diurnal variations in the absolute values of TEC and TEC variations with periods of 2-25 min did not reveal a substantial increase in the intensity and changes in the spectrum of the TEC variations in the period of typhoon action as compared to the adjacent days. Thus, we failed to detect ionospheric disturbances unambiguously related to the SAOMAI typhoon.

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