Characterization of the morphometry of impact craters hosting polar deposits in Mercury's north polar region
نویسندگان
چکیده
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC, USA. Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York, USA. Planetary Science Institute, Tucson, Arizona, USA.
منابع مشابه
Comparison of areas in shadow from imaging and altimetry in the north polar region of Mercury and implications for polar ice deposits.
Earth-based radar observations and results from the MESSENGER mission have provided strong evidence that permanently shadowed regions near Mercury's poles host deposits of water ice. MESSENGER's complete orbital image and topographic datasets enable Mercury's surface to be observed and modeled under an extensive range of illumination conditions. The shadowed regions of Mercury's north polar reg...
متن کاملImaging Mercury's Polar Deposits during MESSENGER's Low-altitude Campaign.
Images obtained during MESSENGER's low-altitude campaign in the final year of the mission provide the highest-spatial-resolution views of Mercury's polar deposits. Images for distinct areas of permanent shadow within 35 north polar craters were successfully captured during the campaign. All of these regions of permanent shadow were found to have low-reflectance surfaces with well-defined bounda...
متن کاملVolatile-rich Crater Interior Deposits on Mars: an Energy Balance Model of Modification
Introduction: Several craters on Mars are partially filled by material emplaced by post-impact processes. Populations of such craters include those in the circum-south polar cap region, in Arabia Terra, associated with the Medusae Fossae Formation, and in the northern lowlands proximal to the north polar cap. In this study, crater fill material refers to an interior mound, generally separated f...
متن کاملSouth Polar Layered Deposits of Mars: The cratering record
[1] Data from the Mars Orbiter Laser Altimeter (MOLA) and Mars Orbiter Camera (MOC) instruments aboard the Mars Global Surveyor (MGS) were used in a detailed search of a selected part of the South Polar Layered Deposits (SPLD) for impact craters. Impact craters with diameters from 0.8 to 5 km were identified from a MOLA-derived shaded relief map and were primarily validated using individual MOL...
متن کاملCrater population and resurfacing of the Martian north polar layered deposits
[1] Present‐day accumulation in the north polar layered deposits (NPLD) is thought to occur via deposition on the north polar residual cap. Understanding current mass balance in relation to current climate would provide insight into the climatic record of the NPLD. To constrain processes and rates of NPLD resurfacing, a search for craters was conducted using images from the Mars Reconnaissance ...
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تاریخ انتشار 2012