منابع مشابه
Implications 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 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 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 کاملPreimpact porosity controls the gravity signature of lunar craters
We model the formation of lunar complex craters and investigate the effect of preimpact porosity on their gravity signatures. We find that while preimpact target porosities less than ~7% produce negative residual Bouguer anomalies (BAs), porosities greater than ~7% produce positive anomalies whose magnitude is greater for impacted surfaces with higher initial porosity. Negative anomalies result...
متن کاملA Global Catalog of Large Lunar Craters (≥20 Km) from the Lunar Orbiter Laser Altimeter
LASER ALTIMETER. S. J. Kadish, C. I. Fassett, J. W. Head, D. E. Smith, M. T. Zuber, G. A. Neumann, E. Mazarico. Dept. of Geological Sciences, Brown University, Providence, RI 02912, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, Solar System Exploration Division, NASA/Goddard Space Flight Center, Greenbelt, MD 20771. (Seth_K...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1968
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/139.2.261