Ionosonde Data Analysis in Relation to the 2016 Central Italian Earthquakes

摘要: Ionospheric characteristics and crustal earthquakes that occurred in 2016 next to the town of Amatrice, Italy are studied together with previous events took place from 1984 2009 Central Italy. The M larger than 5.5 epicentral distances ionosonde less 150 km were selected for analysis. A multiparametric approach was applied using variations sporadic E-layer parameters (the height transparency frequency) F2 layer critical frequency foF2 at Rome ionospheric observatory. Only data under quiet geomagnetic conditions considered. inclusion new has allowed us clarify earlier-obtained seismo-ionospheric empirical relationships linking distance space (km) time (days) between anomaly impending earthquake, its magnitude. improved dependencies shown be similar those obtained studies different parts world. possibility earthquake predictions is discussed.