Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0233-2 |
Observational evidence for active dust storms on Titan at equinox | |
Rodriguez, S.1; Le Mouelic, S.2; Barnes, J. W.3; Kok, J. F.4; Rafkin, S. C. R.5; Lorenz, R. D.6; Charnay, B.7; Radebaugh, J.8; Narteau, C.1; Cornet, T.9; Bourgeois, O.2; Lucas, A.1; Rannou, P.10; Griffith, C. A.11; Coustenis, A.7; Appere, T.12; Hirtzig, M.7,20; Sotin, C.13; Soderblom, J. M.14; Brown, R. H.11; Bow, J.3; Vixie, G.3; Maltagliati, L.1,21; du Pont, S. Courrech15; Jaumann, R.16; Stephan, K.16; Baines, K. H.17; Buratti, B. J.13; Clark, R. N.18; Nicholson, P. D.19 | |
2018-10-01 | |
发表期刊 | NATURE GEOSCIENCE
![]() |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:10页码:727-+ |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA; Spain; Germany; England |
英文摘要 | Saturn's moon Titan has a dense nitrogen-rich atmosphere, with methane as its primary volatile. Titan's atmosphere experiences an active chemistry that produces a haze of organic aerosols that settle to the surface and a dynamic climate in which hydrocarbons are cycled between clouds, rain and seas. Titan displays particularly energetic meteorology at equinox in equatorial regions, including sporadic and large methane storms. In 2009 and 2010, near Titan's northern spring equinox, the Cassini spacecraft observed three distinctive and short-lived spectral brightenings close to the equator. Here, we show from analyses of Cassini spectral data, radiative transfer modelling and atmospheric simulations that the brightenings originate in the atmosphere and are consistent with formation from dust storms composed of micrometre-sized solid organic particles mobilized from underlying dune fields. Although the Huygens lander found evidence that dust can be kicked up locally from Titan's surface, our findings suggest that dust can be suspended in Titan's atmosphere at much larger spatial scale. Mobilization of dust and injection into the atmosphere would require dry conditions and unusually strong near-surface winds (about five times more than estimated ambient winds). Such strong winds are expected to occur in downbursts during rare equinoctial methane storms-consistent with the timing of the observed brightenings. Our findings imply that Titan-like Earth and Mars-has an active dust cycle, which suggests that Titan's dune fields are actively evolving by aeolian processes. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446089100009 |
WOS关键词 | HUYGENS PROBE ; CASSINI VIMS ; LANDING SITE ; DUNE FIELDS ; ATMOSPHERE ; SURFACE ; RADAR ; CLOUDS ; SIMULATIONS ; SAR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34790 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Paris Diderot, Inst Phys Globe Paris, Sorbonne Paris Cite, UMR CNRS 7154, Paris, France; 2.Univ Nantes, CNRS UMR 6112, Lab Planetol & Geodynam LPGNantes, Nantes, France; 3.Univ Idaho, Dept Phys, Moscow, ID USA; 4.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 5.Southwest Res Inst, Planetary Atmospheres & Surfaces, Dept Space Studies, Boulder, CO USA; 6.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 7.Univ Paris Diderot, Sorbonne Univ, Univ Pierre & Marie Curie Paris 06, PSL Res Univ,LESIA,CNRS,Observ Paris,Sorbonne Par, Meudon, France; 8.Brigham Young Univ, Dept Geol Sci, Provo, UT 84602 USA; 9.European Space Agcy, European Space Astron Ctr, Villanueva De La Canada, Spain; 10.Univ Reims, Grp Spect Mol & Atmospher, UMR CNRS 6089, UFR Sci Exactes & Nat, Reims, France; 11.Univ Arizona, Dept Planetary Sci, Lunar & Planetary Lab, Tucson, AZ 85721 USA; 12.Univ J Fourier, Inst Planetol & Astrophys Grenoble, CNRS, INSU, Grenoble, France; 13.CALTECH, Jet Prop Lab, Pasadena, CA USA; 14.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA; 15.Univ Paris Diderot, Lab Matiere & Syst Complexes, Paris, France; 16.German Aerosp Ctr DLR, Inst Planetary Res, Berlin, Germany; 17.Univ Wisconsin, Ctr Space Sci & Engn, 1225 W Dayton St, Madison, WI 53706 USA; 18.Planetary Sci Inst, Tucson, AZ USA; 19.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA; 20.Fdn La Main A La Pate, Montrouge, France; 21.Springer Nat, London, England |
推荐引用方式 GB/T 7714 | Rodriguez, S.,Le Mouelic, S.,Barnes, J. W.,et al. Observational evidence for active dust storms on Titan at equinox[J]. NATURE GEOSCIENCE,2018,11(10):727-+. |
APA | Rodriguez, S..,Le Mouelic, S..,Barnes, J. W..,Kok, J. F..,Rafkin, S. C. R..,...&Nicholson, P. D..(2018).Observational evidence for active dust storms on Titan at equinox.NATURE GEOSCIENCE,11(10),727-+. |
MLA | Rodriguez, S.,et al."Observational evidence for active dust storms on Titan at equinox".NATURE GEOSCIENCE 11.10(2018):727-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论