Anisotropic diffusion ofmeteor trails due to the geomagnetic field over King Sejong Station (62.2 degrees S, 58.8 degrees W), Antarctica

作者：Choi Jong Min; Kwak Young Sil^*; Kim Yong Ha; Lee Changsup; Kim Jeong Han; Jee Geonhwa; Yang Tae Yong

来源：Astrophysics and Space Science, 2018, 363(6): 110.

DOI：10.1007/s10509-018-3330-1

• Meteor trail
• Anisotropic diffusion
• Antarctica

We analyzed meteor decay times measured by a VHF meteor radar at King Sejong Station, Antarctica (62.22 degrees S, 58.78 degrees W) to study diffusion processes of the meteor trails above the altitude of similar to 93 km. Above this altitude, where the atmospheric density is so dilute that collisions between trail ions and ambient molecules become rare, diffusion of a meteor trail can be greatly affected by the geomagnetic field, resulting in anisotropic distribution of measured decay times over the azimuthal and elevation angles. Our preliminary analysis confirm the anisotropic nature of meteor decay times due to geomagnetic field.

• 出版日期2018-6
• 单位中国极地研究中心