典型文献
Ray-tracing simulations of whistler-mode wave propagation in different rescaled dipole magnetic fields
文献摘要:
Kinetic simulation is a powerful tool to study the excitation and propagation of whistler-mode waves in the Earth's innermagnetosphere. This method typically applies a scaled-down dipole magnetic field to save computational time. However, it remains unknown whether whistler wave propagation in the scaled-down dipole field is consistent with that in the realistic dipole field. In this work, we develop a ray-tracing code with a scalable dipole magnetic field to address this concern. The simulation results show that parallel whistler waves at different frequencies gradually become oblique after leaving the equator and propagate in different raypaths in a dipole magnetic field. During their propagation, the higher frequency waves tend to have larger wave normal angles at the same latitude. Compared with the wave propagation in a realistic dipole field, the wave raypath and wave normal remain the same, whereas the wave amplification or attenuation is smaller because of the shorter propagation time in a scaled-down dipole field. Our study provides significant guidance for kinetic simulations of whistler-mode waves.
文献关键词:
中图分类号:
作者姓名:
YangGuang Ke;QuanMing Lu;XinLiang Gao;HuaYue Chen;Rui Chen
作者机构:
CAS Key Laboratory of Geoscience Environment,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Comparative Planetology,Hefei 230026,China;Collaborative Innovation Center of Astronautical Science and Technology,Harbin 150001,China
文献出处:
引用格式:
[1]YangGuang Ke;QuanMing Lu;XinLiang Gao;HuaYue Chen;Rui Chen-.Ray-tracing simulations of whistler-mode wave propagation in different rescaled dipole magnetic fields)[J].地球与行星物理(英文),2022(06):555-562
A类:
innermagnetosphere,raypaths,raypath
B类:
Ray,tracing,simulations,whistler,mode,propagation,different,rescaled,dipole,magnetic,fields,Kinetic,powerful,tool,study,excitation,waves,Earth,This,method,typically,applies,down,save,computational,However,remains,unknown,whether,consistent,that,realistic,In,this,work,develop,code,scalable,address,concern,results,show,parallel,frequencies,gradually,become,oblique,after,leaving,equator,propagate,During,their,higher,frequency,tend,have,larger,normal,angles,same,latitude,Compared,whereas,amplification,attenuation,smaller,because,shorter,Our,provides,significant,guidance,kinetic
AB值:
0.460972
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