Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089672 |
The morphometry of impact craters on Bennu | |
R. T. Daly; E. B. Bierhaus; O. S. Barnouin; M. G. Daly; J. A. Seabrook; J. H. Roberts; C. M. Ernst; M. E. Perry; H. Nair; R. C. Espiritu; E. E. Palmer; R. W. Gaskell; J. R. Weirich; H. C. M. Susorney; C. L. Johnson; K. J. Walsh; M. C. Nolan; E. R. Jawin; P. Michel; D. Trang; D. S. Lauretta | |
2020-11-20 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Bennu is a ~500‐m‐diameter rubble‐pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS‐REx) mission. Here we use data from the OSIRIS‐REx Laser Altimeter to assess depth‐to‐diameter ratios (d/D) of 108 impact craters larger than 10 m in diameter. The d/D of craters on Bennu ranges from 0.02 to 0.19. The mean is 0.10 ± 0.03. The smallest craters show the broadest range in d/D, consistent with d/D measurements on other asteroids. A few craters have central mounds, which is interpreted as evidence that a more competent substrate lies a few meters beneath them. The range of d/D narrows as crater size increases, with craters larger than 80 m tending toward smaller d/D. At large scales, increases in target strength with depth, combined with target curvature, may affect crater morphometry. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304302 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | R. T. Daly,E. B. Bierhaus,O. S. Barnouin,et al. The morphometry of impact craters on Bennu[J]. Geophysical Research Letters,2020. |
APA | R. T. Daly.,E. B. Bierhaus.,O. S. Barnouin.,M. G. Daly.,J. A. Seabrook.,...&D. S. Lauretta.(2020).The morphometry of impact craters on Bennu.Geophysical Research Letters. |
MLA | R. T. Daly,et al."The morphometry of impact craters on Bennu".Geophysical Research Letters (2020). |
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