Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aat3185 |
In situ collection of dust grains falling from Saturn's rings into its atmosphere | |
Hsu, Hsiang-Wen1; 39;Donoghue, James2 | |
2018-10-05 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 362期号:6410页码:49-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Finland; Germany; England |
英文摘要 | Saturn's main rings are composed of >95% water ice, and the nature of the remaining few percent has remained unclear. The Cassini spacecraft's traversals between Saturn and its innermost D ring allowed its cosmic dust analyzer (CDA) to collect material released from the main rings and to characterize the ring material infall into Saturn. We report the direct in situ detection of material from Saturn's dense rings by the CDA impact mass spectrometer. Most detected grains are a few tens of nanometers in size and dynamically associated with the previously inferred "ring rain." Silicate and water-ice grains were identified, in proportions that vary with latitude. Silicate grains constitute up to 30% of infalling grains, a higher percentage than the bulk silicate content of the rings. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446547100035 |
WOS关键词 | COLLISIONAL DISRUPTION ; BALLISTIC TRANSPORT ; DETECTOR CDA ; IONOSPHERE ; PARTICLES ; CASSINI/VIMS ; INSTABILITY ; EJECTION ; IMPACTS ; ORIGIN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/199729 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 2.Univ Oulu, Astron Res Unit, Oulu, Finland; 3.Heidelberg Univ, Inst Geowissensch, Heidelberg, Germany; 4.Free Univ Berlin, Inst Geol Wissensch, Berlin, Germany; 5.Univ Stuttgart, Inst Raumfahrtsyst, Stuttgart, Germany; 6.Univ Potsdam, Inst Phys & Astron, Potsdam, Germany; 7.Jet Prop Lab, Pasadena, CA USA; 8.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA; 9.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 10.Boston Univ, Ctr Space Phys, Boston, MA 02215 USA; 11.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 12.Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking, Surrey, England; 13.Univ Coll London Birkbeck, Ctr Planetary Sci, London, England; 14.Baylor Univ, Ctr Astrophys Space Phys & Engn Res, Waco, TX 76798 USA |
推荐引用方式 GB/T 7714 | Hsu, Hsiang-Wen,39;Donoghue, James. In situ collection of dust grains falling from Saturn's rings into its atmosphere[J]. SCIENCE,2018,362(6410):49-+. |
APA | Hsu, Hsiang-Wen,&39;Donoghue, James.(2018).In situ collection of dust grains falling from Saturn's rings into its atmosphere.SCIENCE,362(6410),49-+. |
MLA | Hsu, Hsiang-Wen,et al."In situ collection of dust grains falling from Saturn's rings into its atmosphere".SCIENCE 362.6410(2018):49-+. |
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