DOI: 10.1002/2014GL060470
论文题名: Particle deposition on the saturnian satellites from ephemeral cryovolcanism on Enceladus
作者: Hirata N. ; Miyamoto H. ; Showman A.P.
刊名: Geophysical Research Letters
ISSN: 0094-10623
EISSN: 1944-10354
出版年: 2014
卷: 41, 期: 12 起始页码: 4135
结束页码: 4141
语种: 英语
Scopus关键词: Cryovolcanism
; Enceladus
; Particle depositions
; Saturnian satellites
; crater
; gully
; planetary satellite
; Saturn
; volcanism
英文摘要: The geologically active south pole of Enceladus generates a plume of micron-sized particles, which likely form Saturn's tenuous E-ring extending from the orbit of Mimas to Titan. Interactions between these particles and satellites have been suggested, though only as very thin surficial phenomena. We scrutinize high-resolution images with a newly developed numerical shape model of Helene and find that the leading hemisphere of Helene is covered by thick deposits of E-ring particles, which occasionally collapse to form gully-like depressions. The depths of the resultant gullies and near-absence of small craters on the leading hemisphere indicate that the deposit is tens to hundreds of meters thick. The ages of the deposits are less than several tens of My, which coincides well with similar deposits found on Telesto and Calypso. Our findings as well as previous theoretical work collectively indicate that the cryovolcanic activity currently occurring on Enceladus is ephemeral. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903329732&doi=10.1002%2f2014GL060470&partnerID=40&md5=8d69cfd4c9132a29abd4ecf7cf0bdccc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7887
Appears in Collections: 气候减缓与适应
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作者单位: University Museum, University of Tokyo, Tokyo, Japan
Recommended Citation:
Hirata N.,Miyamoto H.,Showman A.P.. Particle deposition on the saturnian satellites from ephemeral cryovolcanism on Enceladus[J]. Geophysical Research Letters,2014-01-01,41(12).