Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jafrearsci.2017.07.022 |
Meteorite falls in Africa | |
Khiri, Fouad1,2; Ibhi, Abderrahmane1; Saint-Gerant, Thierry3; Medjkane, Mohand3; Ouknine, Lahcen1 | |
通讯作者 | Khiri, Fouad |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES
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ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2017 |
卷号 | 134页码:644-657 |
英文摘要 | The study of meteorites provides insight into the earliest history of our solar system. From 1800, about the year meteorites were first recognized as objects falling from the sky, until December 2014, 158 observed meteorite falls were recorded in Africa. Their collected mass ranges from 1.4 g to 175 kg with the 1-10 kg cases predominant. The average rate of African falls is low with only one fall recovery per 1.35-year time interval (or 0.023 per year per million km(2)). This African collection is dominated by ordinary chondrites (78%) just like in the worldwide falls. The seventeen achondrites include three Martian meteorite falls (Nakhla of Egypt, Tissint of Morocco and Zagami of Nigeria). Observed Iron meteorite falls are relatively rare and represent only 5%. The falls’ rate in Africa is variable in time and in space. The number of falls continues to grow since 1860, 80% of which were recovered during the period between 1910 and 2014. Most of these documented meteorite falls have been recovered from North-Western Africa, Eastern Africa and Southern Africa. They are concentrated in countries which have a large surface area and a large population with a uniform distribution. Other factors are also favorable for observing and collecting meteorite falls across the African territory, such as: a genuine meteorite education, a semi-arid to arid climate (clear sky throughout the year most of the time), croplands or sparse grasslands and possible access to the fall location with a low percentage of forest cover and dense road network. (C) 2017 Elsevier Ltd. All rights reserved. |
英文关键词 | Observed meteorite falls Africa Statistics Classification Distribution factors |
类型 | Article |
语种 | 英语 |
国家 | Morocco ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000412609000054 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/199953 |
作者单位 | 1.Univ Ibn Zohr, Geoheritage & Geomat Lab, Agadir, Morocco; 2.Reg Ctr Trades Educ & Training, Inzegane, Agadir, Morocco; 3.Univ Caen, IDEES, Caen, France |
推荐引用方式 GB/T 7714 | Khiri, Fouad,Ibhi, Abderrahmane,Saint-Gerant, Thierry,et al. Meteorite falls in Africa[J],2017,134:644-657. |
APA | Khiri, Fouad,Ibhi, Abderrahmane,Saint-Gerant, Thierry,Medjkane, Mohand,&Ouknine, Lahcen.(2017).Meteorite falls in Africa.JOURNAL OF AFRICAN EARTH SCIENCES,134,644-657. |
MLA | Khiri, Fouad,et al."Meteorite falls in Africa".JOURNAL OF AFRICAN EARTH SCIENCES 134(2017):644-657. |
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