Document Detail


The vertical profile of winds on Titan.
MedLine Citation:
PMID:  16319831     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
One of Titan's most intriguing attributes is its copious but featureless atmosphere. The Voyager 1 fly-by and occultation in 1980 provided the first radial survey of Titan's atmospheric pressure and temperature and evidence for the presence of strong zonal winds. It was realized that the motion of an atmospheric probe could be used to study the winds, which led to the inclusion of the Doppler Wind Experiment on the Huygens probe. Here we report a high resolution vertical profile of Titan's winds, with an estimated accuracy of better than 1 m s(-1). The zonal winds were prograde during most of the atmospheric descent, providing in situ confirmation of superrotation on Titan. A layer with surprisingly slow wind, where the velocity decreased to near zero, was detected at altitudes between 60 and 100 km. Generally weak winds (approximately 1 m s(-1)) were seen in the lowest 5 km of descent.
Authors:
M K Bird; M Allison; S W Asmar; D H Atkinson; I M Avruch; R Dutta-Roy; Y Dzierma; P Edenhofer; W M Folkner; L I Gurvits; D V Johnston; D Plettemeier; S V Pogrebenko; R A Preston; G L Tyler
Publication Detail:
Type:  Journal Article     Date:  2005-11-30
Journal Detail:
Title:  Nature     Volume:  438     ISSN:  1476-4687     ISO Abbreviation:  Nature     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-12-12     Completed Date:  2005-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410462     Medline TA:  Nature     Country:  England    
Other Details:
Languages:  eng     Pagination:  800-2     Citation Subset:  -    
Affiliation:
Radioastronomisches Institut, Universit?t Bonn, Auf dem H?gel 71, 53125 Bonn, Germany. mbird@astro.uni-bonn.de
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