Journal of Geophysical Research: Planets


Results of the 2001 Mars Odyssey Gamma Ray Spectrometer Investigation

Analysis of data acquired by the Mars Global Surveyor Thermal Emission Spectrometer (TES) instrument led to the identification of two distinct surface types.“Surface type 1,” lying mostly within southern low-albedo terrain, is likely to be composed of basalt. However, there are several competing mineralogical models for “surface type 2,” which is found primarily in northern low-albedo terrain.

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      Concentration of H, Si, Cl, K, Fe, and Th in the low- and mid-latitude regions of Mars

      W. V. Boynton, G. J. Taylor, L. G. Evans, R. C. Reedy, R. Starr, D. M. Janes, K. E. Kerry, D. M. Drake, K. J. Kim, R. M. S. Williams, M. K. Crombie, J. M. Dohm, V. Baker, A. E. Metzger, S. Karunatillake, J. M. Keller, H. E. Newsom, J. R. Arnold, J. Brückner, P. A. J. Englert, O. Gasnault, A. L. Sprague, I. Mitrofanov, S. W. Squyres, J. I. Trombka, L. d'Uston, H. Wänke and D. K. Hamara

      Article first published online: 21 DEC 2007 | DOI: 10.1029/2007JE002887

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      Dissecting the polar dichotomy of the noncondensable gas enhancement on Mars using the NASA Ames Mars General Circulation Model

      Steven M. Nelli, James R. Murphy, Ann L. Sprague, William V. Boynton, Kris E. Kerry, Daniel M. Janes and Albert E. Metzger

      Article first published online: 25 AUG 2007 | DOI: 10.1029/2006JE002849

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      Chemical compositions at Mars landing sites subject to Mars Odyssey Gamma Ray Spectrometer constraints

      Suniti Karunatillake, John M. Keller, Steven W. Squyres, William V. Boynton, Johannes Brückner, Daniel M. Janes, Olivier Gasnault and Horton E. Newsom

      Article first published online: 2 AUG 2007 | DOI: 10.1029/2006JE002859

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      Long-term observations of southern winters on Mars: Estimations of column thickness, mass, and volume density of the seasonal CO2 deposit from HEND/Odyssey data

      M. L. Litvak, I. G. Mitrofanov, A. S. Kozyrev, A. B. Sanin, V. I. Tretyakov, W. V. Boynton, N. J. Kelly, D. Hamara and R. S. Saunders

      Article first published online: 17 FEB 2007 | DOI: 10.1029/2006JE002832

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      Geochemistry of Martian soil and bedrock in mantled and less mantled terrains with gamma ray data from Mars Odyssey

      Horton E. Newsom, Larry S. Crumpler, Robert C. Reedy, Michael T. Petersen, Gary C. Newsom, Larry G. Evans, G. Jeffrey Taylor, John M. Keller, Daniel M. Janes, William V. Boynton, Kris. E. Kerry and Suniti Karunatillake

      Article first published online: 16 FEB 2007 | DOI: 10.1029/2006JE002680

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      Mars Odyssey Gamma Ray Spectrometer elemental abundances and apparent relative surface age: Implications for Martian crustal evolution

      Brian C. Hahn, Scott M. McLennan, G. Jeffrey Taylor, William V. Boynton, James M. Dohm, Mike J. Finch, David K. Hamara, Daniel M. Janes, Suniti Karunatillake, John M. Keller, Kristopher E. Kerry, Albert E. Metzger and Remo M. S. Williams

      Article first published online: 25 JAN 2007 | DOI: 10.1029/2006JE002821

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      Mars' atmospheric argon: Tracer for understanding Martian atmospheric circulation and dynamics

      Ann L. Sprague, William V. Boynton, Kris E. Kerry, Daniel M. Janes, Nora J. Kelly, M. Katherine Crombie, Steven M. Nelli, James R. Murphy, Robert C. Reedy and Albert E. Metzger

      Article first published online: 9 JAN 2007 | DOI: 10.1029/2005JE002597

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      Bulk composition and early differentiation of Mars

      G. Jeffrey Taylor, W. Boynton, J. Brückner, H. Wänke, G. Dreibus, K. Kerry, J. Keller, R. Reedy, L. Evans, R. Starr, S. Squyres, S. Karunatillake, O. Gasnault, S. Maurice, C. d'Uston, P. Englert, J. Dohm, V. Baker, D. Hamara, D. Janes, A. Sprague, K. Kim and D. Drake

      Article first published online: 19 DEC 2006 | DOI: 10.1029/2005JE002645

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      Theoretical fluxes of gamma rays from the Martian surface

      Kyeong J. Kim, Darrell M. Drake, Robert C. Reedy, Remo M. S. Williams and William V. Boynton

      Article first published online: 14 DEC 2006 | DOI: 10.1029/2005JE002655

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      Variations in K/Th on Mars

      G. Jeffrey Taylor, J. D. Stopar, W. V. Boynton, S. Karunatillake, J. M. Keller, J. Brückner, H. Wänke, G. Dreibus, K. E. Kerry, R. C. Reedy, L. G. Evans, R. D. Starr, L. M. V. Martel, S. W. Squyres, O. Gasnault, S. Maurice, C. d'Uston, P. Englert, J. M. Dohm, V. R. Baker, D. Hamara, D. Janes, A. L. Sprague, K. J. Kim, D. M. Drake, S. M. McLennan and B. C. Hahn

      Article first published online: 13 DEC 2006 | DOI: 10.1029/2006JE002676

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      Composition of northern low-albedo regions of Mars: Insights from the Mars Odyssey Gamma Ray Spectrometer

      Suniti Karunatillake, Steven W. Squyres, G. Jeffrey Taylor, John M. Keller, Olivier Gasnault, Larry G. Evans, Robert C. Reedy, Richard Starr, William Boynton, Daniel M. Janes, Kristopher E. Kerry, James M. Dohm, Ann L. Sprague, Brian C. Hahn and Dave Hamara

      Article first published online: 13 DEC 2006 | DOI: 10.1029/2006JE002675

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      Equatorial and midlatitude distribution of chlorine measured by Mars Odyssey GRS

      J. M. Keller, W. V. Boynton, S. Karunatillake, V. R. Baker, J. M. Dohm, L. G. Evans, M. J. Finch, B. C. Hahn, D. K. Hamara, D. M. Janes, K. E. Kerry, H. E. Newsom, R. C. Reedy, A. L. Sprague, S. W. Squyres, R. D. Starr, G. J. Taylor and R. M. S. Williams

      Article first published online: 13 DEC 2006 | DOI: 10.1029/2006JE002679

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      Seasonal polar carbon dioxide frost on Mars: CO2 mass and columnar thickness distribution

      N. J. Kelly, W. V. Boynton, K. Kerry, D. Hamara, D. Janes, R. C. Reedy, K. J. Kim and R. M. Haberle

      Article first published online: 13 DEC 2006 | DOI: 10.1029/2006JE002678

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      Analysis of gamma ray spectra measured by Mars Odyssey

      Larry G. Evans, Robert C. Reedy, Richard D. Starr, Kristopher E. Kerry and William V. Boynton

      Article first published online: 13 DEC 2006 | DOI: 10.1029/2005JE002657

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