| 云南西双版纳曼桂陨石雨调查 |
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| 引用本文： | 李世杰,罗维均,李博方,李阳.云南西双版纳曼桂陨石雨调查[J].矿物学报,2020,40(2):176-182. |
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| 作者姓名： | 李世杰 罗维均 李博方 李阳 |
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| 作者单位： | 桂林理工大学广西隐伏金属矿产勘查重点实验室,广西桂林541004;中国科学院地球化学研究所月球与行星科学研究中心,贵州贵阳550081;中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550081;中国科学院地球化学研究所月球与行星科学研究中心,贵州贵阳550081;中国科学院地质与球物理研究所地球与行星物理重点实验室,北京100029 |
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| 基金项目： | 广西隐伏金属矿产勘查重点实验室开放基金;西部之光"人才培养计划;贵州省科技计划 |
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| 摘 要： | 北京时间2018年6月1日21:43左右,在云南西双版纳景洪市的西南有火流星滑过夜空,通过目击者拍摄的视频初步判断又是一次陨石降落,这是继2017年10月4日(农历中秋节)后又一次目击到流星光顾云南省上空。6月2日有消息称在西双版纳勐海县勐遮镇的曼伦村发现了降落的陨石。随后的几天,陆续有很多媒体记者、陨石爱好者和陨石猎人赶往陨石降落地,随即,一场陨石雨呈现出来。截止目前,已经收集到的数据表明这次陨石雨的已知范围约3km×12km,从南东向北西方向以55.3°±2.5°的入射角度降落至地面,先后在曼南、曼光、曼央囡、曼潘、曼么代、曼楷龙、曼庄、曼垒、曼伦、曼迈回、曼朗、曼赛、蔓燕和曼桂村等10余个自然村发现陨石,据不完全统计,陨石数量超过1000个,质量由0.04 g至1280 g,总质量超过50 kg。该陨石雨陨石类型为L6,冲击程度为S4。
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| 关 键 词： | 西双版纳 陨石雨 散落区 普通球粒陨石 曼桂 |
The survey of Mangui meteorite shower in the Xishuangbanna area,Yunnan Province,China |
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| LI Shi-jie,LUO Wei-jun,LI Bo-fang,LI Yang.The survey of Mangui meteorite shower in the Xishuangbanna area,Yunnan Province,China[J].Acta Mineralogica Sinica,2020,40(2):176-182. |
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| Authors: | LI Shi-jie LUO Wei-jun LI Bo-fang LI Yang |
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| Institution: | (Guangxi Hidden Mineral Exploration Center,College of Earth Sciences,Guilin University of Technology,Guilin 541004,China;Center for Lunar and Planetary Sciences,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;Bing 9,Jiaochangkou Street 9,Dewai Street,Xicheng District,Beijing 100120,China;Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | On June 1 st, 2018, at 21:43 Beijing Time(UT+8), a meteor bolide lightened sky and fell across the southwestern Jinghong Ciry, Xishuangbanna Prefecture in Yunnan Province. On the basis of videos taken by several witnesses in Jinghong City, we believe that it should be a meteorite landing event. It is another witnessed meteor bolide appeared in Yunnan province since the mid-autumn festival fireball incident in the Shangri-la area on 4 th of October 2017. On June 2 nd, it is said that a piece of fresh meteorite was found by some residents in the Manlun village, Mengzhe town, Menghai county, Xishuangbanna region. The news spreaded on the internet rapidly, and numerous meteorite collectors, dealers and news reporters flooded there. Many meteorites, found in following days, revealed that there was a big meteorite shower in the area. So far, the currently collected data indicate that this meteorite shower covers an area of about 3 km by 12 km According to our calculation, the meteorite fireball had falled at an angle of(55.3±2.5)° with respect to the horizon, in the direction from SE to NW. So far, the identified strewn field is 3 km×12 km Over 1000 individuals or fragments of meteorite, with weighted mass varying from 0.04 g to 1280 g, and total mass of over 50 kg, had been found in over 10 villages. The classification result shows that meteorites of the shower belong to the L6 type, with the shock intensity of S4. |
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| Keywords: | Xishuangbanna meteorite shower strewn field ordinary chondrite Mangui |
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