Proton cyclotron waves upstream from Mars: Observations from Mars Global Surveyor
نویسندگان
چکیده
منابع مشابه
Modeling Mars’ ionosphere with constraints from same‐day observations by Mars Global Surveyor and Mars Express
[1] We have analyzed a brief period of same‐day observations of the Martian ionosphere using data obtained in December 2004 from the Mars Global Surveyor (MGS) and Mars Express (MEX) radio occultation experiments. These data were taken shortly after sunrise under solstice conditions in both hemispheres, with MGS in the summer (northern) hemisphere at high latitudes while MEX was in the winter (...
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Observations of the gravity field of Mars reveal a planet that has responded differently in its northern and southern hemispheres to major impacts and volcanic processes. The rough, elevated southern hemisphere has a relatively featureless gravitational signature indicating a state of near-isostatic compensation, whereas the smooth, low northern plains display a wider range of gravitational ano...
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[1] The nature and origin of the Medusae Fossae Formation (MFF) on Mars has been debated since the return of the first Viking images. The MFF’s young age, distinctive surface texture, and lack of obvious source have prompted multiple hypotheses for its origin. This study uses data from the Mars Global Surveyor (MGS) mission to examine the MFF at all available scales. We discuss and quantify obs...
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The Thermal Emission Spectrometer spectra of low albedo surface materials suggests that a four to one mixture of pyroxene to plagioclase, together with about a 35 percent dust component provides the best fit to the spectrum. Qualitative upper limits can be placed on the concentration of carbonates (<10 percent), olivine (<10 percent), clay minerals (<20 percent), and quartz (<5 percent) in the ...
متن کاملMartian clouds observed by Mars Global Surveyor Mars Orbiter Camera
[1] We have made daily global maps that cover both polar and equatorial regions of Mars for Ls 135 –360 and 0 –111 using the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) red and blue wide-angle swaths taken from May 1999 to January 2001. We study the seasonal distribution of condensate clouds and dust clouds during roughly 1 Martian year using these daily global maps. We present the dev...
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ژورنال
عنوان ژورنال: Planetary and Space Science
سال: 2013
ISSN: 0032-0633
DOI: 10.1016/j.pss.2012.10.011