Temporal and spatial analyses on seismo-electric anomalies associated with the 27 February 2010 M = 8.8 Chile earthquake observed by DEMETER satellite

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102331

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102331

Title:	Temporal and spatial analyses on seismo-electric anomalies associated with the 27 February 2010 M = 8.8 Chile earthquake observed by DEMETER satellite
Authors:	劉正彥;Ho, Y.-Y.;Liu, J.-Y.;Parrot, M.;Pinçon, J.-L.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Anomalies;Comparative analysis;Density;Earthquakes;Electromagnetism;Electron temperature;Ion temperature;Nickel;Sciences of the Universe;Seismic activity;Seismic phenomena;Spatial analysis;Statistical analysis;Temporal logic;Titanium
Date:	2013-12-16
Issue Date:	2026-04-23 11:06:26 (UTC+8)
Publisher:	European Geosciences Union;Katlenburg-Lindau: Copernicus Publications
Abstract:	摘要： This paper studies seismo-electromagnetic anomalies observed by the French satellite DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) during the 27 February 2010 M = 8.8 Chile earthquake. The nighttime electron density (Ne), electron temperature (Te), ion density (Ni), ion temperature (Ti) and whistler counts (Cw) 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 Ne and Ni (Cw) 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 Ne, Ni, and Ti occur specifically around the epicenter area. The intersection of the temporal and spatial results confirms that Ne and Ni are useful and sensitive detecting anomalous related to the 2010 M = 8.8 Chile earthquake. 出版者： Katlenburg-Lindau: Copernicus Publications 出版日期： 2013-12-16 出處： Natural hazards and earth system sciences, 2013-12, Vol.13 (12), p.3281-3289 資源來源： Agricultural & Environmental Science Collection 版權： COPYRIGHT 2013 Copernicus GmbH 版權： Copyright Copernicus GmbH 2013 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISSN: 1684-9981 識別號： ISSN: 1561-8633 識別號： EISSN: 1684-9981 識別號： DOI: 10.5194/nhess-13-3281-2013
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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