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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9858

Authors: Nenovski, P. I.
Pezzopane, M.*
Ciraolo, L.
Vellante, M.
Villante, U.
De Lauretis, M.
Title: Local changes in the total electron content immediately before the 2009 Abruzzo earthquake
Title of journal: Advances in space research
Series/Report no.: 1/55(2015)
Publisher: Elsevier Science Limited
Issue Date: 1-Jan-2015
DOI: 10.1016/j.asr.2014.09.029
Keywords: GPS measurements
Total electron content (TEC)
TEC disturbance
Lower ionosphere
Earthquake shock
Abstract: Ionospheric TEC (total electron content) variations derived from GPS measurements recorded at 7 GPS stations in Northern, Central and Southern Italy before and after the 2009 Abruzzo earthquake (EQ) of magnitude Mw6.3 were processed and analyzed. The analysis included interpolated and non-interpolated TEC data. Variations in the TEC of both regional and local characteristics were revealed. Several regional changes were observed in the studied period: 1 January–21 April 2009. After analyzing non-interpolated TEC data of 5 GPS stations in Central Italy (Unpg (Perugia), Untr (Terni), Aqui (Aquila), M0se (Rome) and Paca (Palma Campania, (Naples)), a local disturbance of TEC was also found. This local TEC disturbance arises preparatory to the EQ main shock occurred at 01:32 UT on 06 April 2009, maximizes its amplitude of ~0.8 TECu after the shock moment and disappears after it. The local TEC disturbance was confined at heights below 160 km, i.e. in the lower ionosphere.
Appears in Collections:01.02.02. Dynamics
01.02.99. General or miscellaneous
01.02.05. Wave propagation
01.02.06. Instruments and techniques
04.06.10. Instruments and techniques
04.06.99. General or miscellaneous
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