Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Normal modes modelling of post-seismic ionospheric oscillations

Abstract : Since 1960, several experiments have shown strong perturbations of the ionosphere after earthquakes. For the biggest quakes, Doppler ionospheric soundings have revealed displacements of several tens of meter of the ionized layers E and F. An accurate modelling of these phenomena was however never described.We present here synthetic displacements of such oscillations and compare it with experimental data. Realistic models of the atmosphere including viscosity are used, as well as realistic Earth and seismic source model. These ionospheric oscillations are computed by normal modes summation taking explicitly into account the coupling between the solid Earth and the open atmosphere. They are associated to the Rayleigh fundamental surface waves. We obtain a good agreement between synthetics and observations, so it should be possible to use this method to study the ionospheric post-seismic perturbations and possibly the high altitude profile of the density and the viscosity of the atmosphere.
Document type :
Journal articles
Complete list of metadata
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Friday, March 4, 2022 - 4:39:03 PM
Last modification on : Sunday, March 6, 2022 - 3:23:52 AM
Long-term archiving on: : Sunday, June 5, 2022 - 7:28:29 PM


Geophysical Research Letters -...
Publisher files allowed on an open archive





Juliette Artru, Philippe Lognonné, Elisabeth Blanc. Normal modes modelling of post-seismic ionospheric oscillations. Geophysical Research Letters, American Geophysical Union, 2001, 28, pp.697-700. ⟨10.1029/2000GL000085⟩. ⟨insu-03597765⟩



Record views


Files downloads