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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/11259423
Record Status
Checked
Record Id
11259423
Title
New Elemental Maps of the Nearside Lunar Highlands
Contributors
JA Carter
,
M Grande
,
MM Bisi
Abstract
A set of elemental maps obtained by the Chandrayaan-1 X-ray Spectrometer (C1XS) and covering the Southern Nearside Lunar Highland region will be presented. This region broadly covers the area below 10 S latitude and between -10 to 30 E longitude. It has never been the subject of a sample return mission; the nearest ground truth measurements are Apollo 16 at 8.56 S, 15.3 E and Surveyor 7 at 41 S, -11 E - this is mainly due to the uneven, mountainous terrain which makes spacecraft landings hazardous. The region has very high relief, with large slopes and rough surface features - these characteristics complicate the analysis of X-ray fluorescence analysis. Chandrayaan-1 flew at a time coinciding with a predicted increase in solar activity. For an X-ray fluorescence instrument, which relies on incident solar X-rays to illuminate the surface, this increase in activity would be enough to guarantee ~100% surface coverage in Mg, Al and Si, and significant areas in Fe, Ti, and Ca. However, the solar cycle was delayed, and instead C1XS launched into the quietest solar conditions seen in 100 years. Regardless, the excellent stability and low noise level of the instrument meant that small flares (A and B class) were able to generate statistically significant findings. The elements mapped will include Magnesium, Silicon and Aluminium, as well as relevant elemental ratios. These will be compared to other datasets including Lunar Prospector, Clementine and M3 mineral maps.
Organisation
STFC
,
RALSP
Keywords
Moon
,
X-ray, neutron, and electron spectroscopy and diffraction
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Presentation
Presented at AGU Fall Meeting 2011, San Francisco, California, USA, 5-9 Dec 2011.
2011
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