Journal articles
Temporal and spatial analyses on seismo-electric anomalies associated with the 27 February 2010 M = 8.8 Chile earthquake observed by DEMETER satellite
Abstract : This paper studies seismo-electromagnetic anomalies observed by the French satellite DEMETER (Detection of ElectroMagnetic Emissions Transmitted from Earthquake Regions) during the 27 February 2010 M = 8.8 Chile earthquake. The nighttime electron density (N e), electron temperature (T e), ion density (N i), ion temperature (T i) and whistler counts (C w) are investigated. A statistical analysis of the box-and-whisker method is applied to see if data of two or more groups under study are significantly different. A cross-examination of temporal variations before and after shows that N e and N i (C w) increases (decreases) appear 10–20 days before the earthquake. A comparison of data over the epicenter and those over its reference area can be employed to discriminate the earthquake-related anomalies from global effects. Results prove that anomalous enhancements of N e , N i , and T i occur specifically around the epicenter area. The intersection of the temporal and spatial results confirms that N e and N i are useful and sensitive detecting anomalous related to the 2010 M = 8.8 Chile earthquake.
Cited literature [36 references]
https://hal-insu.archives-ouvertes.fr/insu-01178891
Contributor : Nathalie Pothier <>
Submitted on : Tuesday, July 21, 2015 - 11:10:28 AM
Last modification on : Tuesday, August 17, 2021 - 1:50:06 PM
Long-term archiving on: : Thursday, October 22, 2015 - 10:35:00 AM
Contributor : Nathalie Pothier <>
Submitted on : Tuesday, July 21, 2015 - 11:10:28 AM
Last modification on : Tuesday, August 17, 2021 - 1:50:06 PM
Long-term archiving on: : Thursday, October 22, 2015 - 10:35:00 AM
File
nhess-13-3281-2013.pdf
Publisher files allowed on an open archive