Simulating Martian Regolith in the Laboratory
ARTICLE IN PRESS Planetary and Space Science 56 (2008) 2009–2025 www.elsevier.com/locate/pss Simulating Martian regolith in the laboratory Karsten Seiferlina,Ã, Pascale Ehrenfreundb, James Garryb, Kurt Gundersona,E.Hu¨tterc, Gu¨nter Karglc, Alessandro Maturillid, Jonathan Peter Merrisone aPhysikalisches Institut, Universita¨t Bern, Sidlerstrasse 5, 3012 Bern, Switzerland bAstrobiology Laboratory, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA Leiden, The Netherlands cInstitut fu¨r Weltraumforschung, Graz, O¨sterreichische Akademie der Wissenschaften, Austria dGerman Aerospace Centre (DLR), Institute for Planetary Research, Rutherfordstr. 2, 12489 Berlin-Adlershof, Germany eAarhus Mars Simulation Laboratory, Aarhus University, Denmark Received 6 December 2007; received in revised form 21 July 2008; accepted 21 September 2008 Available online 15 October 2008 Abstract Regolith and dust cover the surfaces of the Solar Systems solid bodies, and thus constitute the visible surface of these objects. The topmost layers also interact with space or the atmosphere in the case of Mars, Venus and Titan. Surface probes have been proposed, studied and flown to some of these worlds. Landers and some of the mechanisms they carry, e.g. sampling devices, drills and subsurface probes (‘‘moles’’) will interact with the porous surface layer. The absence of true extraterrestrial test materials in ample quantities restricts experiments to the use of soil or regolith analogue materials. Several standardized soil simulants have been developed and produced and are commonly used for a variety of laboratory experiments. In this paper we intend to give an overview of some of the most important soil simulants, and describe experiments (penetrometry, thermal conductivity, aeolian transport, goniometry, spectroscopy and exobiology) made in various European laboratory facilities.
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