Journal of Geophysical Research: Planets

Cover image for Vol. 118 Issue 8

August 2013

Volume 118, Issue 8

Pages 1567–1717

  1. Regular Articles

    1. Top of page
    2. Regular Articles
    1. A 1-D model of physical chemistry in Saturn's inner magnetosphere (pages 1567–1581)

      B. L. Fleshman, P. A. Delamere, F. Bagenal and T. Cassidy

      Article first published online: 5 AUG 2013 | DOI: 10.1002/jgre.20106

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      Key Points

      • Model the plasma sheet properties of Saturn's inner magnetosphere
      • Investigate sensitivity to hot electrons, neutral density, and radial transport
      • Determine the radial plasma mass outflow rate
    2. Circular polarization ratio characteristics of impact craters from Mini-RF observations and implications for ice detection at the polar regions of the Moon (pages 1582–1608)

      Wenzhe Fa and Yuzhen Cai

      Article first published online: 5 AUG 2013 | DOI: 10.1002/jgre.20110

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      Key Points

      • There is no difference in CPR between polar and non-polar anomalous craters
      • Inner wall of a bowl-shaped crater can cause a change in CPR about 0.1-0.2
      • The elevated CPRs for anomalous craters are most probably caused by rocks
    3. Geomorphic signatures of glacial activity in the Alba Patera volcanic province: Implications for recent frost accumulation on Mars (pages 1609–1631)

      Rishitosh K. Sinha and Sripada V. S. Murty

      Article first published online: 20 AUG 2013 | DOI: 10.1002/jgre.20113

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      Key Points

      • Analysis of features on pole facing slopes within craters in Alba Patera
      • Orientation correlations between older and younger glacial features
      • Role of elevation ranges of host craters on formation of glacial features
    4. A systematic mapping procedure based on the Modified Gaussian Model to characterize magmatic units from olivine/pyroxenes mixtures: Application to the Syrtis Major volcanic shield on Mars (pages 1632–1655)

      Harold Clenet, Patrick Pinet, Georges Ceuleneer, Yves Daydou, Frédérick Heuripeau, Christine Rosemberg, Jean-Pierre Bibring, Giancarlo Bellucci, Francesca Altieri and Brigitte Gondet

      Article first published online: 22 AUG 2013 | DOI: 10.1002/jgre.20112

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      Key Points

      • MGM systematic mapping on Syrtis Major to characterize mafic minerals mixtures
      • Olivine and pyroxenes mixture is detected in the central lavas of the volcano
      • Pyroxenes have chemical compositions spanning the enstatite-augite range
    5. Hydrovolcanic tuff rings and cones as indicators for phreatomagmatic explosive eruptions on Mars (pages 1656–1675)

      P. Brož and E. Hauber

      Article first published online: 22 AUG 2013 | DOI: 10.1002/jgre.20120

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      Key Points

      • Tuff rings and tuff cones are found near the margin of Utopia Planitia, Mars
      • They indicate phreatomagmatic eruptions by interaction of magma with ice
      • The morphologic diversity of known volcanic landforms on Mars is still growing
    6. You have full text access to this OnlineOpen article
      High‒degree gravity models from GRAIL primary mission data (pages 1676–1698)

      Frank G. Lemoine, Sander Goossens, Terence J. Sabaka, Joseph B. Nicholas, Erwan Mazarico, David D. Rowlands, Bryant D. Loomis, Douglas S. Chinn, Douglas S. Caprette, Gregory A. Neumann, David E. Smith and Maria T. Zuber

      Article first published online: 23 AUG 2013 | DOI: 10.1002/jgre.20118

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      Key Points

      • Analyze satellite-to-satellite and DSN data to the GRAIL spacecraft
      • Determine gravity field solutions to 660x660 in spherical harmonics
      • Use variance component estimation to calibrate solution errors
    7. Surface scattering properties at the Opportunity Mars rover's traverse region measured by CRISM (pages 1699–1717)

      Amy Shaw, M. J. Wolff, F. P. Seelos, S. M. Wiseman and S. Cull

      Article first published online: 23 AUG 2013 | DOI: 10.1002/jgre.20119

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      Key Points

      • In situ & orbital data are used to characterize surfaces at Meridiani Planum
      • Scattering at Meridiani is affected by spherule size, abundance, & burial depth
      • Orbital photometric data linked with sub-pixel-scale surface roughness

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