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

Influence of higher atmospheric pressure on the Martian radiation environment: Implications for possible habitability in the Noachian epoch

Ehresmann, B. und Burmeister, S. und Wimmer-Schweingruber, R. F. und Reitz, G. (2011) Influence of higher atmospheric pressure on the Martian radiation environment: Implications for possible habitability in the Noachian epoch. Journal of Geophysical Research, 116 / epub ahead of print (A10106). American Geophysical Union. DOI: 10.1029/2011JA016616 .

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

The Noachian epoch (∼4.5–3.5 billion years ago) is a promising era for a possible emergence of life on Mars. The presence of runoff channels in areas formed during the Noachian suggests that liquid water existed at least sporadically during that time, with liquid water being regarded as a prerequisite for life. To have sustained liquid water, the atmospheric pressure on Noachian Mars must have been significantly higher than in the present. When considering the possibility of life on Noachian Mars, one conceivable restriction is given by the ionising radiation environment. Using PLANETOCOSMICS- and Geant4-simulation codes, we calculate the radiation environment on the Martian surface and the resulting radiation exposure for different atmospheric conditions. Here, we present absorbed dose and dose equivalent rates resulting from galactic-cosmic-proton and alpha-particle-induced radiation environments, as well as changes of these rates caused by an increase of atmospheric pressure.

Dokumentart:Zeitschriftenbeitrag
Titel:Influence of higher atmospheric pressure on the Martian radiation environment: Implications for possible habitability in the Noachian epoch
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Ehresmann, B. Institute for Experimental and Applied Physics, Christian Albrechts University Kiel, Kiel, Germany
Burmeister, S. Institute for Experimental and Applied Physics, Christian Albrechts University Kiel, Kiel, Germany
Wimmer-Schweingruber, R. F. Institute for Experimental and Applied Physics, Christian Albrechts University Kiel, Kiel, Germany
Reitz, G. Institute of Aerospace Medicine, Radiation Biology, German Aerospace Center, Cologne, Germany
Datum:2011
Erschienen in:Journal of Geophysical Research
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:116 / epub ahead of print
DOI :10.1029/2011JA016616
Verlag:American Geophysical Union
Status:veröffentlicht
Stichwörter:Noachian radiation environment, Mars, ionising radiation environment, higher atmospheric pressure, PLANETOCOSMICS- and Geant4-simulation codes
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Forschung unter Weltraumbedingungen
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R FR - Forschung unter Weltraumbedingungen
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Strahlenbiologie
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Strahlenbiologie
Hinterlegt von: Kerstin Kopp
Hinterlegt am:15 Dez 2011 14:22
Letzte Änderung:23 Jan 2014 11:36

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.