Abstract
In this paper we examine the pre-earthquake ionospheric anomalies by the total electron content (TEC) extracted from GIM (global ionospheric map) and the electron density (Ne) observed by the DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite during the 2010 M8.8 Chile earthquake. Temporal variations show the nighttime TEC and Ne simultaneously increase 9-19 days before the earthquake. A cross-comparison of data recorded during the period of 1 February to 3 March in 2006-2010 confirms the above temporal anomalies specifically appear in 2010. The spatial analyses show that the anomalies tend to appear over the epicenter.
Original language | English |
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Pages (from-to) | 2309-2315 |
Number of pages | 7 |
Journal | Advances in Space Research |
Volume | 51 |
Issue number | 12 |
DOIs | |
State | Published - 15 Jun 2013 |
Keywords
- DEMETER
- Earthquake
- GIM
- Seismo-ionospheric anomaly
- TEC