elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

The thermal structure of Martian soil and the measurability of the planetary heat flow

Grott, M. und Helbert, J. und Nadalini, R. (2007) The thermal structure of Martian soil and the measurability of the planetary heat flow. Journal of Geophysical Research, 112, . AGU. DOI: 10.1029/2007JE002905.

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

We investigate the influence of the external temperature forcing given by seasonal, interannual, and climatic temperature changes on the surface heat flow of Mars and determine how meaningful measurements of the internal planetary heat flow can be obtained. The influence of seasonal temperature changes is found to be efficiently removed if measurements are extended over the period of at least a full Martian year. Interannual variability due to, e.g., eolian-driven surface albedo changes typically alters the heat flow by less than 15%, although errors may be larger if the soil's thermal conductivity and the albedo variations are both large. Heat flow perturbations caused by long-term climatic changes are found to stay below 15%. In order to also determine the soil's thermal conductivity with an accuracy of 20% or better, a direct conductivity measurement is required. We conclude that a measurement of the Martian planetary heat flow is possible with an accuracy of 30% or better if measurements are extended over the period of at least a full Martian year and thermal conductivity is directly measured. Temperature sensors should have a precision of 0.1 K, and measurements should be conducted up to a depth of 3–5 m.

Dokumentart:Zeitschriftenbeitrag
Titel:The thermal structure of Martian soil and the measurability of the planetary heat flow
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Grott, M.NICHT SPEZIFIZIERT
Helbert, J.NICHT SPEZIFIZIERT
Nadalini, R.NICHT SPEZIFIZIERT
Datum:2007
Erschienen in:Journal of Geophysical Research
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:112
DOI :10.1029/2007JE002905
Seitenbereich:
Verlag:AGU
Status:veröffentlicht
Stichwörter:Mars, heat flow
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Vergleichende Planetologie (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetenphysik
Hinterlegt von: Stefanie Musiol
Hinterlegt am:02 Okt 2007
Letzte Änderung:15 Jan 2010 00:31

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.