Theoretical prediction of the thermal conductivity and temperature variation inside mars soil analogues
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| Title: | Theoretical prediction of the thermal conductivity and temperature variation inside mars soil analogues |
|---|---|
| Authors: | Gori, F. gori@uniroma2.it, Corasaniti, S.1 sandra.corasaniti@uniroma2.it |
| Source: | Planetary & Space Science. Jan2004, Vol. 52 Issue 1-3, p91. 9p. |
| Subjects: | Mars surface samples, Thermal diffusivity, Martian exploration, Mars (Planet) |
| Abstract: | Mars soil analogues, in dry and frozen conditions, are investigated, as far as the thermal conductivity prediction and the temperature variation, along its depth, are concerned. The thermal conductivity is theoretically predicted with the cubic cell model, which requires the knowledge of the thermal conductivity of the solid particle and of the materials present, i.e. atmospheric gas and/or frozen ice, and the porosity of the soil analogue. The soil mineral composition allows to evaluate the thermal conductivity of the solid particle. The heat capacity of the soil analogue is evaluated with the knowledge of its physical properties, the porosity and the specific heats of the materials present. The thermal diffusivity is calculated as the ratio of the thermal conductivity and heat capacity and results to be a function of the porosity and the ice mass content of the soil analogue. The temperature variations, in dry and partially frozen soil analogues, are predicted during a Martian day. The temperature variation, at different depth, is attenuated, as compared to the surface variation and a phase delay is present, depending on the soil thermal properties. The temperature variation, as well as the derivative of the temperature variation with the depth, is dependent on the thermal diffusivity of the soil analogue. In conclusion, the temperature measurement, along the depth of a Martian soil analogue, can be used to verify its physical status, i.e. dry or partially frozen. [Copyright &y& Elsevier] |
| Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science 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: 11957375 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Theoretical prediction of the thermal conductivity and temperature variation inside mars soil analogues – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gori%2C+F%2E%22">Gori, F.</searchLink><i> gori@uniroma2.it</i><br /><searchLink fieldCode="AR" term="%22Corasaniti%2C+S%2E%22">Corasaniti, S.</searchLink><relatesTo>1</relatesTo><i> sandra.corasaniti@uniroma2.it</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Planetary+%26+Space+Science%22">Planetary & Space Science</searchLink>. Jan2004, Vol. 52 Issue 1-3, p91. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mars+surface+samples%22">Mars surface samples</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+diffusivity%22">Thermal diffusivity</searchLink><br /><searchLink fieldCode="DE" term="%22Martian+exploration%22">Martian exploration</searchLink><br /><searchLink fieldCode="DE" term="%22Mars+%28Planet%29%22">Mars (Planet)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Mars soil analogues, in dry and frozen conditions, are investigated, as far as the thermal conductivity prediction and the temperature variation, along its depth, are concerned. The thermal conductivity is theoretically predicted with the cubic cell model, which requires the knowledge of the thermal conductivity of the solid particle and of the materials present, i.e. atmospheric gas and/or frozen ice, and the porosity of the soil analogue. The soil mineral composition allows to evaluate the thermal conductivity of the solid particle. The heat capacity of the soil analogue is evaluated with the knowledge of its physical properties, the porosity and the specific heats of the materials present. The thermal diffusivity is calculated as the ratio of the thermal conductivity and heat capacity and results to be a function of the porosity and the ice mass content of the soil analogue. The temperature variations, in dry and partially frozen soil analogues, are predicted during a Martian day. The temperature variation, at different depth, is attenuated, as compared to the surface variation and a phase delay is present, depending on the soil thermal properties. The temperature variation, as well as the derivative of the temperature variation with the depth, is dependent on the thermal diffusivity of the soil analogue. In conclusion, the temperature measurement, along the depth of a Martian soil analogue, can be used to verify its physical status, i.e. dry or partially frozen. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Planetary & Space Science is the property of Pergamon Press - An Imprint of Elsevier Science 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.pss.2003.08.009 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 91 Subjects: – SubjectFull: Mars surface samples Type: general – SubjectFull: Thermal diffusivity Type: general – SubjectFull: Martian exploration Type: general – SubjectFull: Mars (Planet) Type: general Titles: – TitleFull: Theoretical prediction of the thermal conductivity and temperature variation inside mars soil analogues Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gori, F. – PersonEntity: Name: NameFull: Corasaniti, S. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2004 Type: published Y: 2004 Identifiers: – Type: issn-print Value: 00320633 Numbering: – Type: volume Value: 52 – Type: issue Value: 1-3 Titles: – TitleFull: Planetary & Space Science Type: main |
| ResultId | 1 |
