Implications of the Deepest Freshest Lunar Craters
نویسنده
چکیده
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 ~ 3.5 x 10 km (1.1 x 10 km maria and 2.4 x 10 km uplands). Figure 1 is a plot of dr/D values of fresh lunar craters measured in this study. Similar data were collected in the pioneering work of Pike [1] and are shown in the background of this figure for comparison purpose. The numerical data in this study [1] were not published, and as a result can not be used for some types of studies [e.g., see 2, 3, and 4]. The data produced in this study will be available on-line at the USGS, Astrogeologic Studies Crater Consortium website.
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