Direct measurement of winds on Titan
We report the first direct measurement of wind velocity in the atmosphere of Titan, one of only two examples in our solar system of a slowly‐rotating body with a dense atmosphere and a prime target of the Cassini mission. Zonal wind velocity was determined from Doppler shift of ethane lines emitted...
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| Veröffentlicht in: | Geophysical research letters 2001-06, Vol.28 (12), p.2361-2364 |
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| container_issue | 12 |
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| container_title | Geophysical research letters |
| container_volume | 28 |
| creator | Kostiuk, Theodor Fast, Kelly E. Livengood, Timothy A. Hewagama, Tilak Goldstein, Jeffrey J. Espenak, Fred Buhl, David |
| description | We report the first direct measurement of wind velocity in the atmosphere of Titan, one of only two examples in our solar system of a slowly‐rotating body with a dense atmosphere and a prime target of the Cassini mission. Zonal wind velocity was determined from Doppler shift of ethane lines emitted from Titan's stratosphere (∼0.1–7 mbar) measured by infrared heterodyne spectroscopy near 12 µm (λ/Δ λ ≥ 106). Prograde zonal circulation, in the direction of global rotation, is established with 94% statistical confidence. Results provide information regarding Titan meteorology constraining dynamical theories for slowly‐rotating bodies, provide otherwise unobtainable data to optimize the Cassini Huygens Probe investigations, and demonstrate the capability for remotely measuring winds on a small, distant object. |
| doi_str_mv | 10.1029/2000GL012617 |
| format | Article |
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Results provide information regarding Titan meteorology constraining dynamical theories for slowly‐rotating bodies, provide otherwise unobtainable data to optimize the Cassini Huygens Probe investigations, and demonstrate the capability for remotely measuring winds on a small, distant object.</description><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Neutral atmospheres</subject><subject>Planetary, asteroid, and satellite characteristics and properties</subject><subject>Planets, their satellites and rings. 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Asteroids</topic><topic>Saturn</topic><topic>Solar system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kostiuk, Theodor</creatorcontrib><creatorcontrib>Fast, Kelly E.</creatorcontrib><creatorcontrib>Livengood, Timothy A.</creatorcontrib><creatorcontrib>Hewagama, Tilak</creatorcontrib><creatorcontrib>Goldstein, Jeffrey J.</creatorcontrib><creatorcontrib>Espenak, Fred</creatorcontrib><creatorcontrib>Buhl, David</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kostiuk, Theodor</au><au>Fast, Kelly E.</au><au>Livengood, Timothy A.</au><au>Hewagama, Tilak</au><au>Goldstein, Jeffrey J.</au><au>Espenak, Fred</au><au>Buhl, David</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Direct measurement of winds on Titan</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2001-06-15</date><risdate>2001</risdate><volume>28</volume><issue>12</issue><spage>2361</spage><epage>2364</epage><pages>2361-2364</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>We report the first direct measurement of wind velocity in the atmosphere of Titan, one of only two examples in our solar system of a slowly‐rotating body with a dense atmosphere and a prime target of the Cassini mission. Zonal wind velocity was determined from Doppler shift of ethane lines emitted from Titan's stratosphere (∼0.1–7 mbar) measured by infrared heterodyne spectroscopy near 12 µm (λ/Δ λ ≥ 106). Prograde zonal circulation, in the direction of global rotation, is established with 94% statistical confidence. 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| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 2001-06, Vol.28 (12), p.2361-2364 |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Astronomy Earth, ocean, space Exact sciences and technology Neutral atmospheres Planetary, asteroid, and satellite characteristics and properties Planets, their satellites and rings. Asteroids Saturn Solar system |
| title | Direct measurement of winds on Titan |
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