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Identifying Geomagnetic Storms with Ionospheric Storm Scale for GNSS and Disaster Prevention
Author(s)
Tangtrakunphaisan, Udomsit
Hozumi, Kornyanat
Tsugawa, Takuya
Date Issued
March 1, 2020
Type
Conference Paper
Abstract
This paper proposes an ionospheric storm scale (I-scale) for identifying the impact of geomagnetic or ionospheric storms in the Ionosphere for GNSS (global navigation satellite system) service and disaster prevention. The I-scale in this work is computed based on the observed foF2 at Chumphon station (10.72°N, 99.37°E) over equatorial latitude from January 2004 to July 2018. The results report that the severe geomagnetic storms, i.e., IP3 and IN3, seldom occur at Chumphon with the probabilities of 0.02% and 0.07%, respectively. The probability of quiet ionospheric condition is the maximum value of 70.73%. Meanwhile, the other I-scales sometimes occur and range from 0.60% to 13.97%. The benefits of the foF2-based I-scale are to indicate the violence level of geomagnetic storms and to announce the ionospheric irregularities in practice.
Citation
2020 8th International Electrical Engineering Congress Ieecon 2020, 2020