Skip to Main content Skip to Navigation
Theses

Etude de la haute atmosphère polaire de Jupiter par occultation stellaire et spectroimagerie infrarouge

Abstract : This thesis aims at a better understanding of the thermal structure of the high polar atmosphere of Jupiter. We focus on two aspects : caracterisation of gravity waves and spatial variations of ionospheric temperature. Study of stellar occultations allows us to obtain temperature profiles for both hemisphere, which confirm a foreseen increase in temperature towards the poles. Scale-time analysis of these profiles enables us to detect gravity waves and caracterize some of the present modes. We also adapt and develop method for observation and signal analysis in order to detect gravity waves in planetary atmospheres. The analysis of spectral data from emission lines of H3+ allow determination of spatial variations of temperature at the ionospheric level, which we correlate with variations of H3+ abundance. The results on both aspects allow a better understanding of the part of gravity-wave breaking and auroral precipitation in the outerplanets' thermospheric heat budget.
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-00006438
Contributor : Elisabeth Raynaud <>
Submitted on : Tuesday, August 3, 2004 - 1:15:09 PM
Last modification on : Monday, December 14, 2020 - 9:55:21 AM
Long-term archiving on: : Wednesday, November 23, 2016 - 5:01:58 PM

Identifiers

  • HAL Id : tel-00006438, version 2

Citation

Elisabeth Raynaud. Etude de la haute atmosphère polaire de Jupiter par occultation stellaire et spectroimagerie infrarouge. Astrophysique [astro-ph]. Université Paris-Diderot - Paris VII, 2003. Français. ⟨tel-00006438v2⟩

Share

Metrics

Record views

473

Files downloads

732