Niveau: Supérieur, Doctorat, Bac+8
Planetary and Space Science 5 i R va ier , In nt M stit ue for Abstract 1. Introduction lead to post-seismic signals or alternatively, to signals related to atmospheric explosion, either from volcanoes or asteroids or from anthropogenic origin. The second are related to coupling of oceanic gravity waves (i.e. tsunami) possible signals are therefore due to near-field post-seismic, to the far-field Rayleigh waves and to trans-oceanic or near field tsunami waves. For these waves, the ionosphere is ARTICLE IN PRESS acting as a natural amplifier of ground measurements and the vertical velocity at the ground level being amplified by a factor up to 105 when it reaches the ionosphere. This 0032-0633/$ - see front matter r 2006 Elsevier Ltd. All rights reserved. doi:10.1016/j.pss.2005.10.021 Corresponding author. Tel.: ; fax: . E-mail address: (P. Lognonne). Recent developments in ionosphere remote sensing, in particular techniques using the global positioning system (GPS) provide an unprecedented capability for monitoring the state of the ionosphere, its reaction to solar events as well as ionospheric wave phenomena. But the ionosphere is also an important Earth layer for solid Earth geophysicists. The structure and activity of the ionosphere is indeed not only related to solar–terrestrial interactions, but also to solid Earth-atmosphere.
- seismic deformations
- satellite receiver
- coupling between
- waves
- prem earth
- perturbations associated
- gps
- waves generated
- ionospheric signals