Geophysical Journal | 2011 volume 33 2

Seismic Effects in F2 Region Related to Electron Temperature

© Sharma A.K., Patil A.V., Bhonsle R.V., Vhatkar R.S., Subrahmanyam P.

In the present study, ionospheric F2 region has been examined for earthquake effect using space based electron temperature data of the Indian SROSS-C2 satellite over latitude range of 0-34 N and longitude range of 40 -100 E during the years 1995 to 1997 around Indian sector. For this purpose, we have analyzed five earthquake events and observed anomalies in average electron temperature 29% to 10% greater than its pre and 16% to 4% more than its post days of the earthquake and latitudinal variation in electron temperature. It shows enhancement in electron temperature was observed maximum on pre earthquake day and several hours before and after the earthquake. These anomalies observed around were (±2 latitude range) the epicenter of the earthquake. Present anomalies were observed perhaps, due to the electromagnetic emission during the earthquake activity. The period from 1995 to 1997 considered for this study comes falls the quiet geomagnetic conditions.

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