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Maps of Subsurface Hydrogen from the High Energy Neutron Detector, Mars Odyssey
I. Mitrofanov,1D. Anfimov,1A. Kozyrev,1M. Litvak,1A. Sanin,1V. Tret'yakov,1A. Krylov,2V. Shvetsov,2W. Boynton,3C. Shinohara,3D. Hamara,3R. S. Saunders4
After 55 days of mapping by the High Energy Neutron Detector
onboard Mars Odyssey, we found deficits of high-energy neutronsin the
southern highlands and northern lowlands of Mars. Thesedeficits
indicate that hydrogen is concentrated in the subsurface.Modeling
suggests that water ice-rich layers that are tens ofcentimeters in
thickness provide one possible fit to the data.
1 Institute for Space Research, Moscow 117997, Russia.
2 Joint Institute for Nuclear Research,
Dubna 141980, Russia.
3 University of Arizona,
Tucson, AZ 85721, USA.
4 Jet Propulsion Laboratory,
Pasadena, CA 91109, USA.
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In Science Magazine
REPORTS
W. C. Feldman, W. V. Boynton, R. L. Tokar, T. H. Prettyman, O. Gasnault, S. W. Squyres, R. C. Elphic, D. J. Lawrence, S. L. Lawson, S. Maurice, G. W. McKinney, K. R. Moore, and R. C. Reedy (5 July 2002) Science297 (5578), 75.
[DOI: 10.1126/science.1073541] |Abstract »|Full Text »|PDF »
REPORTS
W. V. Boynton, W. C. Feldman, S. W. Squyres, T. H. Prettyman, J. Brückner, L. G. Evans, R. C. Reedy, R. Starr, J. R. Arnold, D. M. Drake, P. A. J. Englert, A. E. Metzger, Igor Mitrofanov, J. I. Trombka, C. d'Uston, H. Wänke, O. Gasnault, D. K. Hamara, D. M. Janes, R. L. Marcialis, S. Maurice, I. Mikheeva, G. J. Taylor, R. Tokar, and C. Shinohara (5 July 2002) Science297 (5578), 81.
[DOI: 10.1126/science.1073722] |Abstract »|Full Text »|PDF »
PERSPECTIVES
Jim Bell (5 July 2002) Science297 (5578), 60.
[DOI: 10.1126/science.1074025] |Summary »|Full Text »|PDF »
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