Ionospheric anomalies detected by ionosonde and possibly related to crustal earthquakes in Greece
Ionosonde data and crustal earthquakes with magnitude <i>M</i> ≥ 6.0 observed in Greece during the 2003–2015 period were examined to check if the relationships obtained earlier between precursory ionospheric anomalies and earthquakes in Japan and central Italy are also valid for Gree...
Main Authors: | , , , , , , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2018-03-01
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Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/36/361/2018/angeo-36-361-2018.pdf |
Summary: | Ionosonde data and crustal earthquakes with magnitude <i>M</i> ≥ 6.0
observed in Greece during the 2003–2015 period were examined to
check if the relationships obtained earlier between precursory
ionospheric anomalies and earthquakes in Japan and central Italy are
also valid for Greek earthquakes. The ionospheric anomalies are
identified on the observed variations of the sporadic E-layer
parameters (h′Es, <i>fo</i>Es) and
<i>fo</i>F2 at the ionospheric station of Athens. The corresponding
empirical relationships between the seismo-ionospheric disturbances
and the earthquake magnitude and the epicentral distance are
obtained and found to be similar to those previously published for
other case studies.
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The large lead times found for the ionospheric anomalies occurrence
may confirm a rather long earthquake preparation period. The
possibility of using the relationships obtained for earthquake
prediction is finally discussed. |
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ISSN: | 0992-7689 1432-0576 |