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数值模拟火星磁场古发电机:Rayleigh数对系统的影响 被引量:2

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摘要 火星表面剩余磁场观测结果表明,火星内核曾经存在过活跃的发电机作用,利用MoSST行星发电机动力学模式模拟了火星古发电机在其活动过程中,系统状态随Rayleigh数Ra(表征发电机驱动浮力强度的重要无量纲参数)改变而变化的情况.模拟结果表明:Rayleigh数和系统中的平均磁场尺度之间呈非单调关系;核幔边界处磁场形态随着Rayleigh数改变而发生变化,尤其磁场的西向漂移速度随着Rayleigh数的减小而降低.
出处 《中国科学(D辑)》 CSCD 北大核心 2009年第2期157-165,共9页 Science in China(Series D)
基金 国家自然科学基金项目(批准号:40328006)资助
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