Global distribution of neutrons from Mars: Results from Mars Odyssey

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; R. C. Reedy

doi:10.1126/science.1073541

Global distribution of neutrons from Mars: Results from Mars Odyssey

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, R. C. Reedy

Lunar and Planetary Lab

Research output: Contribution to journal › Article › peer-review

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Abstract

Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer. These fluxes are selectively sensitive to the vertical and lateral spatial distributions of H and CO₂ in the uppermost meter of the martian surface. Poleward of ±60° latitude is terrain rich in hydrogen, probably H₂O ice buried beneath tens of centimeter-thick hydrogen-poor soil. The central portion of the north polar cap is covered by a thick CO₂ layer, as is the residual south polar cap. Portions of the low to middle latitudes indicate subsurface deposits of chemically and/or physically bound H₂O and/or OH.

Original language	English (US)
Pages (from-to)	75-78
Number of pages	4
Journal	Science
Volume	297
Issue number	5578
DOIs	https://doi.org/10.1126/science.1073541
State	Published - Jul 5 2002

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title = "Global distribution of neutrons from Mars: Results from Mars Odyssey",

abstract = "Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer. These fluxes are selectively sensitive to the vertical and lateral spatial distributions of H and CO2 in the uppermost meter of the martian surface. Poleward of ±60° latitude is terrain rich in hydrogen, probably H2O ice buried beneath tens of centimeter-thick hydrogen-poor soil. The central portion of the north polar cap is covered by a thick CO2 layer, as is the residual south polar cap. Portions of the low to middle latitudes indicate subsurface deposits of chemically and/or physically bound H2O and/or OH.",

author = "Feldman, {W. C.} and Boynton, {W. V.} and Tokar, {R. L.} and Prettyman, {T. H.} and O. Gasnault and Squyres, {S. W.} and Elphic, {R. C.} and Lawrence, {D. J.} and Lawson, {S. L.} and S. Maurice and McKinney, {G. W.} and Moore, {K. R.} and Reedy, {R. C.}",

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language = "English (US)",

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journal = "Science",

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TY - JOUR

T1 - Global distribution of neutrons from Mars

T2 - Results from Mars Odyssey

AU - Feldman, W. C.

AU - Boynton, W. V.

AU - Tokar, R. L.

AU - Prettyman, T. H.

AU - Gasnault, O.

AU - Squyres, S. W.

AU - Elphic, R. C.

AU - Lawrence, D. J.

AU - Lawson, S. L.

AU - Maurice, S.

AU - McKinney, G. W.

AU - Moore, K. R.

AU - Reedy, R. C.

PY - 2002/7/5

Y1 - 2002/7/5

N2 - Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer. These fluxes are selectively sensitive to the vertical and lateral spatial distributions of H and CO2 in the uppermost meter of the martian surface. Poleward of ±60° latitude is terrain rich in hydrogen, probably H2O ice buried beneath tens of centimeter-thick hydrogen-poor soil. The central portion of the north polar cap is covered by a thick CO2 layer, as is the residual south polar cap. Portions of the low to middle latitudes indicate subsurface deposits of chemically and/or physically bound H2O and/or OH.

AB - Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer. These fluxes are selectively sensitive to the vertical and lateral spatial distributions of H and CO2 in the uppermost meter of the martian surface. Poleward of ±60° latitude is terrain rich in hydrogen, probably H2O ice buried beneath tens of centimeter-thick hydrogen-poor soil. The central portion of the north polar cap is covered by a thick CO2 layer, as is the residual south polar cap. Portions of the low to middle latitudes indicate subsurface deposits of chemically and/or physically bound H2O and/or OH.

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ER -

Global distribution of neutrons from Mars: Results from Mars Odyssey

Abstract

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