| DOI: | 10.1002/2013GL058618
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| 论文题名: | The bathymetry of a Titan sea |
| 作者: | Mastrogiuseppe M.; Poggiali V.; Hayes A.; Lorenz R.; Lunine J.; Picardi G.; Seu R.; Flamini E.; Mitri G.; Notarnicola C.; Paillou P.; Zebker H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10305
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| EISSN: | 1944-10036
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| 出版年: | 2014
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| 卷: | 41, 期:5 | | 起始页码: | 1432
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| 结束页码: | 1437
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| 语种: | 英语
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| 英文关键词: | Cassini
; Hydrology
; Planetary Sciences
; Remote sensing
; Solar System Objects
; Titan
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| Scopus关键词: | Bathymetry
; Ethane
; Hydrology
; Liquids
; Methane
; Remote sensing
; Sailing vessels
; Cassini
; Composition determination
; Direct measurement
; Microwave absorbing
; Planetary science
; Radio signals
; Suspended particles
; Titan
; Liquid methane
; altimetry
; bathymetry
; depth determination
; nadir
; planetary atmosphere
; planetary surface
; radar
; seafloor
; shoreline
; solar system
; Titan
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| 英文摘要: | We construct the depth profile - the bathymetry - of Titan's large sea Ligeia Mare from Cassini RADAR data collected during the 23 May 2013 (T91) nadir-looking altimetry flyby. We find the greatest depth to be about 160 m and a seabed slope that is gentler toward the northern shore, consistent with previously imaged shoreline morphologies. Low radio signal attenuation through the sea demonstrates that the liquid, for which we determine a loss tangent of 3 ± 1·10-5, is remarkably transparent, requiring a nearly pure methane-ethane composition, and further that microwave absorbing hydrocarbons, nitriles, and suspended particles be limited to less than the order of 0.1% of the liquid volume. Presence of nitrogen in the ethane-methane sea, expected based on its solubility and dominance in the atmosphere, is consistent with the low attenuation, but that of substantial dissolved polar species or suspended scatterers is not. Key Points First direct measurement of the depth of a Titan sea First determination of the nearly pure methane-ethane Ligeia Mare composition Determination of the total volume of Ligeia Mare ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894696268&doi=10.1002%2f2013GL058618&partnerID=40&md5=8dca723488636dc04bb5c7069cec714e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7569
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Dipartimento di Ingegneria dell'Informazione, Elettronica e Telecomunicazioni, Università la Sapienza, Rome, Italy
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| Recommended Citation: | |
Mastrogiuseppe M.,Poggiali V.,Hayes A.,et al. The bathymetry of a Titan sea[J]. Geophysical Research Letters,2014-01-01,41(5).
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