The Morphometry of Impact Craters on Bennu
| العنوان: | The Morphometry of Impact Craters on Bennu |
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| المؤلفون: | J. A. Seabrook, R. C. Espiritu, P. Michel, H. Nair, Olivier S. Barnouin, Carolyn M. Ernst, Robert Gaskell, Dante S. Lauretta, Mark E. Perry, J. R. Weirich, Michael C. Nolan, James H. Roberts, Hannah C.M. Susorney, David Trang, R. T. Daly, Eric Palmer, E. B. Bierhaus, Kevin J. Walsh, Catherine L. Johnson, Erica Jawin, Michael Daly |
| المساهمون: | Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Lockheed Martin Space, Department of Earth and Space Science and Engineering [York University - Toronto] (ESSE), York University [Toronto], Planetary Science Institute [Tucson] (PSI), University of Bristol [Bristol], University of British Columbia (UBC), Southwest Research Institute [Boulder] (SwRI), Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, Smithsonian Institution National Museum of Natural History (NMNH), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Hawai'i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai'i [Honolulu] (UH) |
| المصدر: | Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2020, 47 (24), ⟨10.1029/2020GL089672⟩ |
| بيانات النشر: | American Geophysical Union (AGU), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Geophysics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010504 meteorology & atmospheric sciences, Impact crater, [SDU]Sciences of the Universe [physics], 0103 physical sciences, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], General Earth and Planetary Sciences, 010303 astronomy & astrophysics, 01 natural sciences, Geomorphology, Geology, 0105 earth and related environmental sciences |
| الوصف: | International audience; Bennu is an~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. |
| تدمد: | 1944-8007 0094-8276 |
| DOI: | 10.1029/2020gl089672 |
| DOI: | 10.1029/2020GL089672⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0cfa25b7f35d83cebf3f8d21dccad85 https://doi.org/10.1029/2020gl089672 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....c0cfa25b7f35d83cebf3f8d21dccad85 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448007 00948276 |
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| DOI: | 10.1029/2020gl089672 |