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http://hdl.handle.net/2122/6174| Authors: | Cianchini, G.* De Santis, A.* Balasis, G.* Mandea, M.* Qamili, E.* |
Title: | Searching for possible seismogenic signatures in ionosphere by an entropy-based analysis of magnetic satellite data: A case study. | Editors: | Lühr, Hermann Hulot, Gauthier Haagmans, Roger |
Issue Date: | 26-Jun-2009 | Keywords: | Magnetic Field Satellite Data Information Theory Large Earthquake |
Subject Classification: | 04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniques 05. General::05.01. Computational geophysics::05.01.01. Data processing 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous |
Abstract: | The importance of detecting possible electromagnetic signatures due to large earthquakes is self-evident, signatures which can be either anticipating, simultaneous or subsequent with respect to the main shock. Taking advantage of the present low Earth’s orbiting CHAMP satellite, we apply an “ad hoc” technique based on the Information Theory, to the satellite magnetic data with the aim at extracting eventual time anomalies. This technique has small time-space resolution using a preliminary wavelet analysis in order to detect shorter-wavelength anomalies. Some examples are given for magnetic satellite data taken over periods including the times of two large earthquakes, one being the Sumatra region event on 26 December 2004 (M=9.1). |
| Appears in Collections: | Conference materials |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| S4_P15_Cianchini_paper.pdf | 279.86 kB | Adobe PDF | View/Open |
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