منابع مشابه
Origin 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 کاملImpact Melt Volumes in Simple Lunar Craters: Constraints on Modeling
Introduction: Impact melt is a typical product produced during the cratering process as a result of the intense heating of the target usually because of pressure decompression, but also possible because of shear heating (Figure 1). Melt is observed on all of the terrestrial planets in both simple and complex craters [16]. High-resolution data for the Moon now allows impact melt deposits to be c...
متن کاملMachine Cataloging of Lunar Craters from Digital Terrain Model
Introduction: An accurate and representative catalog of impact craters on the surface of the Moon is necessary to infer information about the age of surfaces and the sequence of geological events [1]. The existing global catalogs of lunar craters contain ~2700 craters [2] and ~8500 craters [3], respectively. They suffer from uneven areal coverage as they were compiled from images having differe...
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ژورنال
عنوان ژورنال: The Moon
سال: 1975
ISSN: 0027-0903,1573-0794
DOI: 10.1007/bf00577935