Palaeoflood-generating mechanisms on Earth, Mars, and Titan
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| Title: | Palaeoflood-generating mechanisms on Earth, Mars, and Titan |
|---|---|
| Authors: | Burr, Devon M.1,2 dburr1@utk.edu |
| Source: | Global & Planetary Change. Feb2010, Vol. 70 Issue 1-4, p5-13. 9p. |
| Subjects: | Floods, Earth sciences, Volcanism, Fluid dynamics, Fluvial geomorphology, Earth (Planet), Mars (Planet), Titan (Satellite), Extraterrestrial volcanism |
| Abstract: | Abstract: Channelized, surface, liquid flow occurs on Earth, Mars, and Titan. In this paper, such fluvial flow is constrained to involve volatiles that can undergo phase transitions under surface conditions and can be stable as liquids over geologically significant periods of time. Evidence for channelized, surface, liquid flood flow has been observed on Earth and Mars and hypothesized for Titan. The mechanisms for generating flood flow vary for each body. On Earth, the mechanism that generated the largest flooding is widespread glaciation (e.g. the catastrophic release of water from glacial lakes), which requires an atmospheric cycle of a volatile that can assume the solid phase. Volcanism is also a prevalent cause for terrestrial megaflooding, with other mechanisms producing smaller, though more frequent, floods. On Mars, the mechanism for flood generation has changed over the history of the planet. Surface storage of floodwater early in the history of that planet gave way to subsurface storage as the climate cooled. As on Earth, flooding on Mars is an effect of the ability of the operative volatile to assume the solid phase, although on Mars, this solid phase occurred in the subsurface. According to this paradigm, conditions on Titan preclude extensive megaflooding because the operative volatile, which is methane, cannot as easily assume the solid phase under current conditions. Mechanisms that produce smaller but more frequent floods on Earth, namely extreme precipitation events, are likely to be the most important flood generators on Titan in the recent past. [Copyright &y& Elsevier] |
| Copyright of Global & Planetary Change is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 48257886 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Palaeoflood-generating mechanisms on Earth, Mars, and Titan – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Burr%2C+Devon+M%2E%22">Burr, Devon M.</searchLink><relatesTo>1,2</relatesTo><i> dburr1@utk.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Global+%26+Planetary+Change%22">Global & Planetary Change</searchLink>. Feb2010, Vol. 70 Issue 1-4, p5-13. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Floods%22">Floods</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Volcanism%22">Volcanism</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Fluvial+geomorphology%22">Fluvial geomorphology</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+%28Planet%29%22">Earth (Planet)</searchLink><br /><searchLink fieldCode="DE" term="%22Mars+%28Planet%29%22">Mars (Planet)</searchLink><br /><searchLink fieldCode="DE" term="%22Titan+%28Satellite%29%22">Titan (Satellite)</searchLink><br /><searchLink fieldCode="DE" term="%22Extraterrestrial+volcanism%22">Extraterrestrial volcanism</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Channelized, surface, liquid flow occurs on Earth, Mars, and Titan. In this paper, such fluvial flow is constrained to involve volatiles that can undergo phase transitions under surface conditions and can be stable as liquids over geologically significant periods of time. Evidence for channelized, surface, liquid flood flow has been observed on Earth and Mars and hypothesized for Titan. The mechanisms for generating flood flow vary for each body. On Earth, the mechanism that generated the largest flooding is widespread glaciation (e.g. the catastrophic release of water from glacial lakes), which requires an atmospheric cycle of a volatile that can assume the solid phase. Volcanism is also a prevalent cause for terrestrial megaflooding, with other mechanisms producing smaller, though more frequent, floods. On Mars, the mechanism for flood generation has changed over the history of the planet. Surface storage of floodwater early in the history of that planet gave way to subsurface storage as the climate cooled. As on Earth, flooding on Mars is an effect of the ability of the operative volatile to assume the solid phase, although on Mars, this solid phase occurred in the subsurface. According to this paradigm, conditions on Titan preclude extensive megaflooding because the operative volatile, which is methane, cannot as easily assume the solid phase under current conditions. Mechanisms that produce smaller but more frequent floods on Earth, namely extreme precipitation events, are likely to be the most important flood generators on Titan in the recent past. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Global & Planetary Change is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.gloplacha.2009.11.003 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 5 Subjects: – SubjectFull: Floods Type: general – SubjectFull: Earth sciences Type: general – SubjectFull: Volcanism Type: general – SubjectFull: Fluid dynamics Type: general – SubjectFull: Fluvial geomorphology Type: general – SubjectFull: Earth (Planet) Type: general – SubjectFull: Mars (Planet) Type: general – SubjectFull: Titan (Satellite) Type: general – SubjectFull: Extraterrestrial volcanism Type: general Titles: – TitleFull: Palaeoflood-generating mechanisms on Earth, Mars, and Titan Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Burr, Devon M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 09218181 Numbering: – Type: volume Value: 70 – Type: issue Value: 1-4 Titles: – TitleFull: Global & Planetary Change Type: main |
| ResultId | 1 |
