منابع مشابه
How Old Are Small Lunar Craters ? - a Depth-to-diameter Ratio Based Analyis
Introduction: In contrast to the larger craters (D > 10km) and basins which shaped the baseline morphology of the Moon, small lunar craters (SLC) continue to form and modify the local topography of the Moon. SLCs form on and around larger craters and basins, are the most populous impact features on the surface but also the least studied topographic data was available only for larger craters unt...
متن کاملOrigin of glass deposits in lunar craters.
country to the economic activity existing in developed countries. Incidentally, my planning office has just finished a feasibility study for an area in the Amazon Basin where 500 families may be settled in 14,400 hectares (1 hectare = 10,000 square meters), with a loan of $16,000 (United States dollars) per family extending over a 10-year period. After 10 years each family will have paid the lo...
متن کاملImplications of the Deepest Freshest Lunar Craters
Lunar Topographic Orthophoto maps (LTO) at 1:250 k scale have been used as a basis to measure the depth (dr and ds), diameter (D), and rim height (Hr) for 359 fresh Lunar craters in the diameter range of .08 – 131 km along the Apollo metric camera ground tracks. This study used LTO maps with high enough sun angle photography to permit deep crater depth measurements. This includes an area of ~ 3...
متن کاملRover Configuration for Exploring Lunar Craters
Configuration of locomotion for planetary rovers is motivated by increased interest in exploring lunar polar craters. Current rover designs cannot achieve the ascent or descent required by steep, unconsolidated lunar slopes. New designs must provide locomotive capability for steep climbing, techniques for controlling slip, and safely navigating down and along steep slopes. We propose a locomoti...
متن کاملGlobal distribution of large lunar craters: implications for resurfacing and impactor populations.
By using high-resolution altimetric measurements of the Moon, we produced a catalog of all impact craters ≥20 kilometers in diameter on the lunar surface and analyzed their distribution and population characteristics. The most-densely cratered portion of the highlands reached a state of saturation equilibrium. Large impact events, such as Orientale Basin, locally modified the prebasin crater po...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1965
ISSN: 0004-6256
DOI: 10.1086/109642