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DOI | 10.1038/s41561-019-0429-0 |
Possible explosion crater origin of small lake basins with raised rims on Titan | |
Mitri, Giuseppe1,2; Lunine, Jonathan, I3,4; Mastrogiuseppe, Marco5; Poggiali, Valerio3 | |
2019-10-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:10页码:791-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | The Cassini mission discovered lakes and seas comprising mostly methane in the polar regions of Titan. Lakes of liquid nitrogen may have existed during the epochs of Titan's past in which methane was photochemically depleted, leaving a nearly pure molecular nitrogen atmosphere and, thus, far colder temperatures. The modern-day small lake basins with sharp edges have been suggested to originate from dissolution processes, due to their morphological similarity to terrestrial karstic lakes. Here we analyse the morphology of the small lake basins that feature raised rims to elucidate their origin, using delay-Doppler processed altimetric and bathymetric data acquired during the last close flyby of Titan by the Cassini spacecraft. We find that the morphology of the raised-rim basins is analogous to that of explosion craters from magma-water interaction on Earth and therefore propose that these basins are from near-surface vapour explosions, rather than karstic. We calculate that the phase transition of liquid nitrogen in the near subsurface during a warming event can generate explosions sufficient to form the basins. Hence, we suggest that raised-rim basins are evidence for one or more warming events terminating a nitrogen-dominated cold episode on Titan. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000488223800004 |
WOS关键词 | VOLCANIC FIELD ; ATMOSPHERE ; METHANE ; PLUMES ; TRITON ; MAARS ; EARTH |
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/187536 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Annunzio, Int Res Sch Planetary Sci, Pescara, Italy; 2.Univ Annunzio, Dipartimento Ingn & Geol, Pescara, Italy; 3.Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY USA; 4.Cornell Univ, Carl Sagan Inst, Ithaca, NY USA; 5.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Mitri, Giuseppe,Lunine, Jonathan, I,Mastrogiuseppe, Marco,et al. Possible explosion crater origin of small lake basins with raised rims on Titan[J]. NATURE GEOSCIENCE,2019,12(10):791-+. |
APA | Mitri, Giuseppe,Lunine, Jonathan, I,Mastrogiuseppe, Marco,&Poggiali, Valerio.(2019).Possible explosion crater origin of small lake basins with raised rims on Titan.NATURE GEOSCIENCE,12(10),791-+. |
MLA | Mitri, Giuseppe,et al."Possible explosion crater origin of small lake basins with raised rims on Titan".NATURE GEOSCIENCE 12.10(2019):791-+. |
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