Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-019-0326-6 |
Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface | |
Walsh, K. J.1; 39;, M.2; 39;Aubigny, C. Y. Drouet3 | |
2019-04-01 | |
发表期刊 | NATURE GEOSCIENCE
![]() |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:4页码:242-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France; Italy; Canada; Czech Republic; England; Australia; Japan; Spain |
英文摘要 | Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid belt where they originate, and thermal or tidal processes act on them once they become near-Earth asteroids. Here we present early measurements of numerous large candidate impact craters on near-Earth asteroid (101955) Bennu by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission, which indicate a surface that is between 100 million and 1 billion years old, predating Bennu's expected duration as a near-Earth asteroid. We also observe many fractured boulders, the morphology of which suggests an influence of impact or thermal processes over a considerable amount of time since the boulders were exposed at the surface. However, the surface also shows signs of more recent mass movement: clusters of boulders at topographic lows, a deficiency of small craters and infill of large craters. The oldest features likely record events from Bennu's time in the main asteroid belt. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462621700007 |
WOS关键词 | ASTEROID FAMILIES ; IMPACT ; RADAR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/182193 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Southwest Res Inst, Boulder, CO 80302 USA; 2.Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA; 3.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA; 4.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 5.Lockheed Martin Space, Littleton, CO USA; 6.Rowan Univ, Dept Geol, Glassboro, NJ USA; 7.Planetary Sci Inst, Tucson, AZ USA; 8.Univ Cote dAzur, CNRS, Lab Lagrange, Observ Cote dAzur, Nice, France; 9.Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA; 10.INAF Osservatorio Astron Padova, Padua, Italy; 11.Univ Hawaii Manoa, Hawai & Inst Geophys & Planetol, Honolulu, HI 96822 USA; 12.SETI Inst, Mountain View, CA USA; 13.Space Sci Inst, Boulder, CO USA; 14.York Univ, Ctr Res Earth & Space Sci, Toronto, ON, Canada; 15.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 16.CALTECH, Jet Prop Lab, Pasadena, CA USA; 17.Univ Calgary, Dept Geosci, Calgary, AB, Canada; 18.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 19.Univ Colorado, Smead Dept Aerosp Engn, Boulder, CO 80309 USA; 20.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC, Canada; 21.Aerosp Corp, Chantilly, VA USA; 22.Charles Univ Prague, Astron Inst, Prague, Czech Republic; 23.Univ Oxford, Atmospher Ocean & Planetary Phys, Oxford, England; 24.Canadian Space Agcy, St Hubert, PQ, Canada; 25.Catholic Univ Amer, Washington, DC USA; 26.Harvard Univ, Ctr Astrophys, Cambridge, MA 02138 USA; 27.Arizona State Univ, Ctr Meteorite Studies, Tempe, AZ USA; 28.CUNY, New York, NY 10021 USA; 29.Univ Colorado, Colorado Ctr Astrodynam Res, Boulder, CO 80309 USA; 30.CSIRO, Canberra, ACT, Australia; 31.Auburn Univ, Dept Aerosp Engn, Auburn, AL 36849 USA; 32.Univ Arizona, Dept Astron, Tucson, AZ USA; 33.Univ Arizona, Steward Observ, Tucson, AZ USA; 34.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA; 35.Univ Maryland, Dept Astron, College Pk, MD 20742 USA; 36.Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37916 USA; 37.Univ Toronto, Dept Earth Sci, Toronto, ON, Canada; 38.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA; 39.Univ Winnipeg, Dept Geog, Winnipeg, MB, Canada; 40.Univ Texas Austin, Jackson Sch Geosci, Dept Geol Sci, Austin, TX 78712 USA; 41.SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA; 42.Ithaca Coll, Dept Phys & Astron, Ithaca, NY 14850 USA; 43.No Arizona Univ, Dept Phys & Astron, Flagstaff, AZ USA; 44.Univ Cent Florida, Dept Phys, Orlando, FL USA; 45.Edge Space Syst, Greenbelt, MD USA; 46.Gen Dynam C4 Syst, Denver, CO USA; 47.Hokkaido Univ, Sapporo, Hokkaido, Japan; 48.INAF Astrophys Observ Arcetri, Florence, Italy; 49.INAF Osservatorio Astron Roma, Rome, Italy; 50.Indigo Informat Serv, Tucson, AZ USA; 51.Univ Paris Sud, CNRS, Inst Astrophys Spatiale, Orsay, France; 52.Okayama Univ Misasa, Inst Planetary Mat, Misasa, Tottori, Japan; 53.Univ La Laguna, Inst Astrofis Canarias, Tenerife, Spain; 54.Univ La Laguna, Dept Astrofis, Tenerife, Spain; 55.Jacobs Technol, Houston, TX USA; 56.JAXA Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan; 57.MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 58.KinetX Aerosp Inc, Simi Valley, CA USA; 59.Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA; 60.Univ Paris Diderot, Sorbonne Univ, Univ PSL, LESIA,Observ Paris,CNRS,Sorbonne Paris Cite, Meudon, France; 61.Macdonald Dettwiler & Associates Ltd, Brampton, ON, Canada; 62.Malin Space Sci Syst, San Diego, CA USA; 63.Arizona State Univ, Mars Space Flight Facil, Tempe, AZ USA; 64.Mines ParisTech, Paris, France; 65.Nagoya Univ, Nagoya, Aichi, Japan; 66.NASA Headquarters, Washington, DC USA; 67.NASA, Johnson Space Ctr, Houston, TX USA; 68.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 69.NASA, Marshall Space Flight Ctr, Huntsville, AL USA; 70.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 71.Royal Ontario Museum, Toronto, ON, Canada; 72.Curtin Univ, Sch Earth & Planetary Sci, Perth, WA, Australia; 73.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA; 74.Open Univ, Sch Phys Sci, Milton Keynes, Bucks, England; 75.Southwest Meteorite Lab, Payson, AZ USA; 76.MIT, Dept Aeronaut & Astronaut, Space Syst Lab, Cambridge, MA 02139 USA; 77.US Geol Survey, Astrogeol Sci Ctr, Flagstaff, AZ 86001 USA; 78.London Stereoscop Co, London, England; 79.Univ Lorraine, Nancy, France |
推荐引用方式 GB/T 7714 | Walsh, K. J.,39;, M.,39;Aubigny, C. Y. Drouet. Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface[J]. NATURE GEOSCIENCE,2019,12(4):242-+. |
APA | Walsh, K. J.,39;, M.,&39;Aubigny, C. Y. Drouet.(2019).Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface.NATURE GEOSCIENCE,12(4),242-+. |
MLA | Walsh, K. J.,et al."Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface".NATURE GEOSCIENCE 12.4(2019):242-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论