A joint time-scale representation methodology for the detection of acoustic gravity wave induced by solar eclipses - Archive ouverte HAL Access content directly
Preprints, Working Papers, ... Year :

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

(1) , (2) , (2) , (1)
1
2
Petra Sauli
  • Function : Author
  • PersonId : 844902
Josef Boska
  • Function : Author
  • PersonId : 844903
Patrice Abry

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.
Fichier principal
Vignette du fichier
gretsi07_rouxetal.pdf (284.15 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

ensl-00193570 , version 1 (04-12-2007)

Identifiers

  • HAL Id : ensl-00193570 , version 1

Cite

Stéphane G. 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⟩
53 View
49 Download

Share

Gmail Facebook Twitter LinkedIn More