Three-dimensional waveform modeling of ionospheric signature induced by the 2004 Sumatra tsunami

Giovanni Occhipinti (1) , Philippe Lognonné (2) , E. Alam Kherani (1) , Hélène Hébert (3)

1 IPGP - Institut de Physique du Globe de Paris
2 DGSP (UMR_7096) - Département de géophysique spatiale et planétaire
3 LDG - Laboratoire de Détection et de Géophysique (CEA)

The Sumatra, December 26th, 2004, tsunami produced internal gravity waves in the neutral atmosphere and large disturbances in the overlying ionospheric plasma. To corroborate the tsunamigenic hypothesis of these perturbations, we reproduce, with a 3D numerical modeling of the ocean-atmosphere-ionosphere coupling, the tsunami signature in the Total Electron Content (TEC) data measured by the Jason-1 and Topex/Poseidon satellite altimeters. The agreement between the observed and synthetic TEC shows that ionospheric remote sensing can provide new tools for offshore tsunami detection and monitoring

Domaines: Planète et Univers [physics]

Giovanni Occhipinti, Philippe Lognonné, E. Alam Kherani, Hélène Hébert. Three-dimensional waveform modeling of ionospheric signature induced by the 2004 Sumatra tsunami. Geophysical Research Letters, 2006, 33 (20), pp.L20104. ⟨10.1029/2006GL026865⟩. ⟨insu-01270093⟩