空间科学学报2018，Vol.38Issue(3)：342-350,9.DOI:10.11728/cjss2018.03.342
长时间流星不均匀体母体特征个例研究
Case Study of Meteoroid Producing Long-duration Meteor Trail Irregularity
摘要
Abstract
Meteoroids enter the Earth's atmosphere,creating columns of ionization and leaving a meteor trail of dense plasma,and the meteor irregularities are often produced through plasma instability.Using the simultaneous observations of meteor and meteor trail irregularities obtained by optical video and VHF radar over low latitude Sanya,respectively,a method to derive the characteristics of meteoroid producing meteor trail irregularities is developed.A case of long duration meteor trail irregularities observed during the Geminid meteor shower in December 2015 is investigated.The velocity,mass and orbit parameters of meteoroid are estimated through the location information of the meteor trail irregularities detected by radar and the direction and gray information of meteor trajectory observed by optical video.The results show that the speed and orbital parameters of the meteoroid producing the long-duration case are similar to those of the parent meteoroid causing the Geminid meteor shower.The method is expected to help understanding the occurrence characteristics of meteor trail irregularities and their corresponding meteoroids.关键词
VHF雷达/光学流星/流星不均匀体/流星体Key words
VHF radar/Optical meteor/Meteor trail irregularity/Meteoroid分类
天文与地球科学引用本文复制引用
李傲,李国主,宁百齐,杨思朋,万卫星..长时间流星不均匀体母体特征个例研究[J].空间科学学报,2018,38(3):342-350,9.基金项目
国家自然科学基金项目资助(41422404,41727803) （41422404,41727803）
