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Polar hydrogen deposits on the Moon
Open accessAbstract
Neutron and gamma‐ray data measured using the Lunar Prospector spectrometers were analyzed to define the enhanced hydrogen deposits near both poles of the Moon. Combining the new low‐altitude neutron data (30±15 km) with previous high‐altitude (100±20 km) neutron data and the results of several recent radar investigations sharply constrains the characteristics of each of the polar deposits. The deposits at the north appear to be in the form of many small pockets or of generally distributed hydrogen that average to a 100 ppm weight fraction enhancement over that which exists in regolith at more equatorial latitudes. Those deposits in the permanently shaded craters near the south pole are consistent with a thick ferroan anorthosite regolith containing an enhancement of 1670±890 ppm hydrogen, which, if in the form of water ice, amounts to 1.5±0.8% weight fraction of H 2 O. Neutron data alone cannot discriminate between hydrogen implanted in lunar soil from the solar wind, hydrated minerals, or H 2 O. These craters appear to be surrounded by regolith that either contains small pockets of enhanced hydrogen or is soil that is uniformly impregnated with hydrogen enhanced on average by about 100 ppm above that contained in soils at more equatorial latitudes.
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Citations
Cited by
Lunar Reconnaissance Orbiter Camera (LROC) Instrument Overview
Robinson, M. S., Brylow, S. M., Tschimmel, M., Humm, D., Lawrence, S. J., Thomas, P. C., Denevi, B. W., Bowman-Cisneros, E., Zerr, J., Ravine, M. A., et al. (2010) · Space Science Reviews · doi:10.1007/s11214-010-9634-2 · Cited by 1,014
Understanding the Lunar Surface and Space-Moon Interactions
Lucey, P. (2006) · Reviews in Mineralogy and Geochemistry · doi:10.2138/rmg.2006.60.2 · Cited by 434
Evidence for water ice near the lunar poles
Feldman, W. C., Maurice, S., Lawrence, D. J., Little, R. C., Lawson, S. L., Gasnault, O., Wiens, R. C., Barraclough, B. L., Elphic, R. C., Prettyman, T. H., et al. (2001) · Journal of Geophysical Research: Planets · doi:10.1029/2000je001444 · Cited by 384
Self-citationIllumination conditions of the lunar polar regions using LOLA topography
Mazarico, E., Neumann, G. A., Smith, D. E., Zuber, M. T., & Torrence, M. H. (2011) · Icarus · doi:10.1016/j.icarus.2010.10.030 · Cited by 376
Optical measurements of the Moon as a tool to study its surface
Shkuratov, Y., Kaydash, V., Korokhin, V., Velikodsky, Y., Opanasenko, N., & Videen, G. (2011) · Planetary and Space Science · doi:10.1016/j.pss.2011.06.011 · Cited by 279
Metadata
- Authors
- Feldman, W. C., Lawrence, D. J., Elphic, R. C., Barraclough, B. L., Maurice, S., Genetay, I., & Binder, A. B.
- Venue
- Journal of Geophysical Research: Planets
- Publisher
- American Geophysical Union (AGU)
- Published
- 2000-02
- Volume
- 105
- Issue
- E2
- Pages
- 4175-4195
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W2068583559
- Cited by
- 284
- References
- 0
- FWCI
- 8.64
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Feldman, W. C., Lawrence, D. J., Elphic, R. C., Barraclough, B. L., Maurice, S., Genetay, I., & Binder, A. B. (2000). Polar hydrogen deposits on the Moon. Journal of Geophysical Research: Planets. https://doi.org/10.1029/1999je001129
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