Articles | Volume 33, issue 11
Ann. Geophys., 33, 1457–1467, 2015
https://doi.org/10.5194/angeo-33-1457-2015
Ann. Geophys., 33, 1457–1467, 2015
https://doi.org/10.5194/angeo-33-1457-2015

Regular paper 30 Nov 2015

Regular paper | 30 Nov 2015

Sub-ionospheric VLF signal anomaly due to geomagnetic storms: a statistical study

K. Tatsuta et al.

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Latest update: 02 Mar 2021
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Short summary
We study the effect of geomagnetic storms on the sub-ionospheric VLF/LF propagations based on 2-year data from the network observations in Japan. Three statistical parameters such as average signal amplitude, variability of the signal amplitude, and nighttime fluctuation were calculated. These statistical parameters indicate significant anomalies during the geomagnetic storm in the high-latitude paths. While mid-latitude and low-mid latitude paths have smaller influence from the storm activity.