A joint time-scale representation methodology for the detection of acoustic gravity wave induced by solar eclipses

Abstract : We introduce a wavelet-based methodology to detect and characterize acoustic-gravity waves propagating through Ionosphere. It is based on data consisting of the time fluctuations of electron concentrations at different heights, collected from vertical Ionospheric sounding. First, we detect the local maxima of the continuous complex wavelet transforms, separately at each heights. Second, we connect the maxima that exist jointly within the same time-period neighborhood, over a continuous range of heights. From the derivation of the phases of the wavelet transform along these maxima lines, we extract the propagation parameters. This methodology is applied to the data collected during three different solar eclipses. It enables us to evidence the existence of several acoustic-gravity waves during these events.
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00193570
Contributeur : Stephane Roux <>
Soumis le : mardi 4 décembre 2007 - 10:03:16
Dernière modification le : jeudi 19 avril 2018 - 14:54:03
Document(s) archivé(s) le : jeudi 27 septembre 2012 - 10:40:31

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gretsi07_rouxetal.pdf
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  • HAL Id : ensl-00193570, version 1

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Stéphane Roux, Petra Sauli, Josef Boska, Patrice Abry. A joint time-scale representation methodology for the detection of acoustic gravity wave induced by solar eclipses. 2007. 〈ensl-00193570〉

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