Journal of Guangxi Normal University(Natural Science Edition) ›› 2012, Vol. 30 ›› Issue (2): 17-22.

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An MHD Simulation Study on the Location and Shape of Magnetopause in Meridian Plane

MU Li-li1, GU Bin1, CHEN Mei-hong1, ZHANG Qing-mei1, LI Chuan-qi2   

  1. 1.College of Physics and Optoelectronic Engineering,Nanjing University of Information Science and Technology, Nanjing Jiangsu 210044,China;
    2.College of Electronic Engineering,GuangxiNormal University, Guilin Guangxi 541004,China
  • Received:2012-03-30 Online:2012-06-20 Published:2018-12-03

Abstract: Based on the Solar wind-Magnetosphere-Ionosphere coupling global MHD simulation,the position and shape of the noon midnight meridian plane magnetopause under several solar wind dynamic pressure and interplanetary magnetic field (IMF) conditions are studied.The simulation results show that,in the noon midnight meridian,plane magnetopause shape has a concave structure.And at certain Dp,when southern IMF Bz (Bz＜0) increases,the subsolar position (r0) of the magnetopause decreases and when northward (Bz＞0)increases,the subsolar position r0 keeps gradually increasing.Significant decreasing of r0 appears with the increase of Dp.For all casesstudied,the flare angle (z0/x0) of the magnetopause increases when (Bz＜0)increases.These simulation results are consistent with the empirical results basedon satellite data in high-latitude empirical model (B00) and (Schield) model.That is to say,MHD simulation is an effective tool to study the magnetopause shape.It is an effective way,based on the configuration of physical theory on magnetopause numerical simulation data,to solve the problem that relates to the obtaining of transversing data in high latitudes being limited.

Key words: noon midnight meridian plane, location and shape, MHDsimulation

CLC Number: 

  • P353
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