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  • 1
    Publication Date: 2013-08-31
    Description: Many regions of the martian surface are covered by fine-grained materials emplaced by volcanic, fluvial, or aeolian processes. These mantling deposits likely hide ancient channel systems (particularly at smaller scale lengths) and volcanic, impact, glacial, or shoreline features. Synthetic aperture radar (SAR) offers the capability to probe meters below the surface, with imaging resolution in the 10 s of m range, to reveal the buried terrain and enhance our understanding of Mars geologic and climate history. This presentation focuses on the practical applications of a Mars orbital SAR, methods for polarimetric and interferometric radar studies, and examples of such techniques for Mars-analog sites on the Moon and Earth.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Workshop on Radar Investigations of Planetary and Terrestrial Environments; 25-26; LPI-Contrib-1231
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  • 2
    Publication Date: 2013-08-31
    Description: Radar interferometry is rapidly becoming one of the major applications of radar systems in Earth orbit. So far the 2000 flight of the Shuttle Radar Topographic Mission (SRTM) is the only dedicated U.S. radar to be flown for the collection of interferometric data, but enough has been learned from this mission and from the use of foreign partner radars (ERS-1/2, Radarsat, ENIVISAT and JERS-1) for the potential planetary applications of this technique to be identified. A recent workshop was organized by the Jet Propulsion Laboratory and the Southern California Earthquake Center (SCEC), and was held at Oxnard, CA, from October 20th - 22nd, 2004. At this meeting, the major interest was in terrestrial radar systems, but approx. 20 or the approx. 250 attendees also discussed potential applications of interferometric radar for the terrestrial planets. The primary foci were for the detection of planetary water, the search for active tectonism and volcanism and the improved topographic mapping. This abstract provides a summary of these planetary discussions at the Oxnard meeting.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Workshop on Radar Investigations of Planetary and Terrestrial Environments; 56-57; LPI-Contrib-1231
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  • 3
    Publication Date: 2017-10-02
    Description: We present experimental evidence that superoxide ions form on mineral grains at the martian surface and show that these adsorbates can explain the unusual reactivity of the soil as well as the apparent absence of organic molecules.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXI; LPI-Contrib-1000
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  • 4
    Publication Date: 2018-06-11
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
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  • 5
    Publication Date: 2017-10-02
    Description: The OMEGA hyperspectral imager (0.35 to 5.08 micrometers) covered the hematite-bearing plains and underlying etched terrains of Terra Meridiani during several orbits with spatial resolutions ranging from several hundred meters to approximately 2 km. We extracted and analyzed surface reflectance spectra from OMEGA data for the approximately 864,000 square kilometers surrounding the Opportunity site. In this paper we focus on analysis of OMEGA orbit 485 data for the plains and etched terrains located to the northeast of the Opportunity landing site.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXVI, Part 1; LPI-Contrib-1234-Pt-1
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  • 6
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    In:  Other Sources
    Publication Date: 2018-06-08
    Description: This paper describes the technical desigh of the UHF SAR for global mapping of Mars and the characteristics of the proposed mission to achieve this goal.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Advanced SAR Workshop; Montreal, Quebec; Canada
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  • 7
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    Publication Date: 2018-06-08
    Keywords: Lunar and Planetary Science and Exploration
    Type: Advanced SAR Workshop; Montreal, Quebec; Canada
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  • 8
    Publication Date: 2019-07-18
    Description: An understanding of the structural and compositional controls on the Raman features of the major types of phyllosilicates is presented. Additional information is contained in the original extended abstract.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXIII; LPI-Contrib-1109
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  • 9
    Publication Date: 2019-07-17
    Description: A Raman survey on a flat-sawn rock slab provides the major mineralogy of martian meteorite Los Angeles. Three unreported accessory minerals and seven terrestrial alteration products and contaminants (organic and inorganic) were also found. Additional information is contained in the original extended abstract.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXII; LPI-Contrib-1080
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  • 10
    Publication Date: 2019-07-12
    Description: We report an analysis of one year of Suprathermal Ion Detector Experiment (SIDE) Total Ion Detector (TID) resonance events observed between January 1972 and January 1973. The study includes only those events during which upstream solar wind conditions were readily available. The analysis shows that these events are associated with lunar traversals through the dawn flank of the terrestrial magnetospheric bow shock. We propose that the events result from an increase in lunar surface electric potential effected by secondary electron emission due to primary electrons in the Earth's foreshock region (although primary ions may play a role as well). This work establishes (1) the lunar surface potential changes as the Moon moves through the terrestrial bow shock, (2) the lunar surface achieves potentials in the upstream foreshock region that differ from those in the downstream magnetosheath region, (3) these differences can be explained by the presence of energetic electron beams in the upstream foreshock region and (4) if this explanation is correct, the location of the Moon with respect to the terrestrial bow shock influences lunar surface potential.
    Keywords: Lunar and Planetary Science and Exploration
    Type: GSFC.JA.00161.2012
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