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Size-Frequency Distribution of Small Lunar Craters: Widening with Degradation and Crater Lifetime
被引:10
|作者:
Ivanov, B. A.
[1
]
机构:
[1] Russian Acad Sci, Inst Dynam Geospheres, Moscow, Russia
关键词:
planetology;
lunar craters;
meteoritic bombardment;
lunar chronology;
lunar crater's life time;
SMALL IMPACT CRATERS;
METEOROIDAL FLUX;
SOLAR-SYSTEM;
PRE-MARE;
MOON;
EQUILIBRIUM;
SURFACE;
AGES;
POPULATION;
CHRONOLOGY;
D O I:
10.1134/S0038094618010021
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
The review and new measurements are presented for depth/diameter ratio and slope angle evolution during small (D < 1 km) lunar impact craters aging (degradation). Comparative analysis of available data on the areal cratering density and on the crater degradation state for selected craters, dated with returned Apollo samples, in the first approximation confirms Neukum's chronological model. The uncertainty of crater retention age due to crater degradational widening is estimated. The collected and analyzed data are discussed to be used in the future updating of mechanical models for lunar crater aging.
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页码:1 / 25
页数:25
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