DSpace Repository

No evidence for thick deposits of ice at the lunar south pole

Show simple item record

dc.contributor.author Campbell, Donald B. en
dc.contributor.author Campbell, Bruce A. en
dc.contributor.author Carter, Lynn M. en
dc.contributor.author Margot, J. L. en
dc.contributor.author Stacy, N. J. en
dc.date.accessioned 2008-01-15T16:54:03Z
dc.date.available 2008-01-15T16:54:03Z
dc.date.issued 2006
dc.identifier.citation Campbell, Donald B., Campbell, Bruce A., Carter, Lynn M., Margot, J. L., and Stacy, N. J. 2006. "<a href="https://repository.si.edu/handle/10088/3332">No evidence for thick deposits of ice at the lunar south pole</a>." <em>Nature</em>. 443 (7113):835&ndash;837. <a href="https://doi.org/10.1038/nature05167">https://doi.org/10.1038/nature05167</a> en
dc.identifier.issn 0028-0836
dc.identifier.uri http://hdl.handle.net/10088/3332
dc.description.abstract Shackleton crater at the Moon&#39;s south pole has been suggested as a possible site of concentrated deposits of water ice, on the basis of modelling of bi-static radar polarization properties and interpretations of earlier Earth-based radar images. This suggestion, and parallel assumptions about other topographic cold traps, is a significant element in planning for future lunar landings. Hydrogen enhancements have been identified in the polar regions, but these data do not identify the host species or its local distribution. The earlier Earth-based radar data lack the resolution and coverage for detailed studies of the relationship between radar scattering properties, cold traps in permanently shadowed areas, and local terrain features such as the walls and ejecta of small craters. Here we present new 20-m resolution, 13-cm-wavelength radar images that show no evidence for concentrated deposits of water ice in Shackleton crater or elsewhere at the south pole. The polarization properties normally associated with reflections from icy surfaces in the Solar System were found at all the observed latitudes and are strongly correlated with the rock-strewn walls and ejecta of young craters, including the inner wall of Shackleton. There is no correlation between the polarization properties and the degree of solar illumination. If the hydrogen enhancement observed by the Lunar Prospector orbiter indicates the presence of water ice, then our data are consistent with the ice being present only as disseminated grains in the lunar regolith en
dc.format.extent 1972580 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.relation.ispartof Nature en
dc.title No evidence for thick deposits of ice at the lunar south pole en
dc.type Journal Article en
dc.identifier.srbnumber 32336
dc.identifier.doi 10.1038/nature05167
rft.jtitle Nature
rft.volume 443
rft.issue 7113
rft.spage 835
rft.epage 837
dc.description.SIUnit NASM en
dc.description.SIUnit NASM-CEPS en
dc.citation.spage 835
dc.citation.epage 837

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account