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DOI | 10.1029/2020GL087481 |
The Insulating Effect of Methane Clathrate Crust on Titan's Thermal Evolution | |
Kalousova, Klara1; Sotin, Christophe2 | |
2020-06-09 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | Czech Republic; USA |
英文摘要 | Saturn's largest moon Titan is unique for its dense, methane-rich atmosphere, with ongoing complex organics chemistry, and the hydrocarbon lakes and seas on its frigid surface. Titan also harbors a subsurface water ocean, and its ice shell is likely capped by a thick crust of low-conductivity methane clathrates that are very stable under Titan's surface conditions. Here, we investigate the effect of this insulating clathrate crust on convection in the ice shell. Without the clathrate crust, convection occurs below a stagnant lid that is a few tens of kilometers thick and limits the exchange between the surface and the deep ocean. We show that a 5-10 km thick clathrate crust reduces the stagnant lid thickness about threefold thus increasing the potential for the ocean-surface exchange. Moreover, the insulating effect of clathrates dramatically decreases the amount of extracted heat thus limiting the freezing rate of Titan's ocean. |
英文关键词 | Titan clathrates thermal evolution ocean |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551465400018 |
WOS关键词 | GRAVITY-FIELD ; ICE SHELL ; LIQUID ; DEFORMATION ; CONVECTION ; SATELLITES ; ATMOSPHERE ; CHEMISTRY ; ORIGIN ; IMPACT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
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/274410 |
专题 | 气候变化 |
作者单位 | 1.Charles Univ Prague, Fac Math & Phys, Dept Geophys, Prague, Czech Republic; 2.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Kalousova, Klara,Sotin, Christophe. The Insulating Effect of Methane Clathrate Crust on Titan's Thermal Evolution[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(13). |
APA | Kalousova, Klara,&Sotin, Christophe.(2020).The Insulating Effect of Methane Clathrate Crust on Titan's Thermal Evolution.GEOPHYSICAL RESEARCH LETTERS,47(13). |
MLA | Kalousova, Klara,et al."The Insulating Effect of Methane Clathrate Crust on Titan's Thermal Evolution".GEOPHYSICAL RESEARCH LETTERS 47.13(2020). |
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