HR: 14:00h
AN: P43B-02    [Abstracts]
TI: Titan's atmospheric structure as inferred from Huygens ASI measurements
AU: * Ferri, F
EM: francesca.ferri@unipd.it
AF: CISAS University of Padova, via Venezia 15, Padova, 35131 Italy
AU: Fulchignoni, M
EM: marcello.fulchignoni@obspm.fr
AF: LESIA Obs Paris, 5 Place Jaussen, Meudon, 92195 France
AU: Colombatti, G
EM: giacomo.colombatti@unipd.it
AF: CISAS University of Padova, via Venezia 15, Padova, 35131 Italy
AU: Coustenis, A
EM: athena.coustenis@obspm.fr
AF: LESIA Obs Paris, 5 Place Jaussen, Meudon, 92195 France
AU: McKay, C P
EM: cmckay@mail.arc.nasa.gov
AF: NASA Ames, AMES Research Center , Moffett Field, CA 94035-1000 United States
AU: Tokano, T
EM: tokano@geo.uni-koeln.de
AF: UNiversity of Koeln, Albertus Magnus platz, Koeln, 50923 Germany
AB: Atmospheric properties of Titan have been measured by the Huygens Atmospheric Structure Instrument (HASI) during the Huygens probe mission at Titan on January 14th, 2005. The atmospheric profile along the Huygens probe trajectory during entry phase have been retrieved from the accelerometers data, while below 160 km direct pressure and temperature measurements have been performed. The atmospheric vertical profiles retrieved from HASI data are in very good agreement with the model derived from Voyager's observations, confirm the evidence for a stratopause and yielded a insight on the upper atmospheric structure. The thermal structure and stability of Titan's atmosphere will be discussed also in relation with the results of ground based observations and remote sensing observations by Cassini.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
SC: Planetary Sciences [P]
MN: Fall Meeting 2005