Electromagnetic Induction Effects and Dynamo Action in the Hermean System
Electromagnetic Induction Effects and Dynamo Action in the Hermean System
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DOI：
10.1007/s11214-007-9244-9
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发表时间：
2007-10
影响因子：
10.3
通讯作者：
K. Glassmeier;J. Grosser;U. Auster;D. Constantinescu;Y. Narita;S. Stellmach
中科院分区：
文献类型：
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作者：
K. Glassmeier;J. Grosser;U. Auster;D. Constantinescu;Y. Narita;S. Stellmach
水星埋藏在质量密度大、行星际磁场强的太阳风环境中，并配备了一个强度较小的磁场，它表现出一个很小的磁层，容易受到强烈的太阳风抖动。这导致磁层及其相关电流的大小有很大的变化。外部磁场比地面情况重要得多，其大小可与任何内部发电机产生的磁场相媲美。行星内部的感应效应由其巨大的核心所主导，与其任何同伴相比，人们认为它在赫门磁层中扮演着更重要的角色。此外，外场可能会引起行星发电机的放大，就像伽利略卫星Io和Ganymede所讨论的那样，但与发电机产生的环境场及其磁场-太阳风相互作用有关。
Embedded in a large mass density and strong interplanetary magnetic field solar wind environment and equipped with a magnetic field of minor strength, planet Mercury exhibits a small magnetosphere vulnerable to severe solar wind buffeting. This causes large variations in the size of the magnetosphere and its associated currents. External fields are of far more importance than in the terrestrial case and of a size comparable to any internal, dynamo-generated field. Induction effects in the planetary interior, dominated by its huge core, are thought to play a much more prominent role in the Hermean magnetosphere compared to any of its companions. Furthermore, the external fields may cause planetary dynamo amplification much as discussed for the Galilean moons Io and Ganymede, but with the ambient field generated by the dynamo and its magnetic field-solar wind interaction.