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Australian magnetic field effects during geomagnetic storms

机译：地磁暴期间的澳大利亚磁场效应

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Using Australian records, we studied six isolated geomagnetic storms for the regional effects of their associated magnetic fields, emphasizing the linear regression correlation coefficient between station locations and indices. An innovation used here was to consider both the full magnetic disturbance field and a form of this field with the smoothed storm-time Dst values removed to feature the small variations. Magnetic H-component data from paired stations throughout the continent showed correlation values of +0.90 to +0.97. These results indicate the adequacy of the present density of observatories in Australia and their value for use with aeromagnetic surveys. The planetary magnetic ap index was found to have an inconsistent relationship to Australian H-component fields. The planetary magnetic Dst index was successfully represented by data from four Australian observatories. The discovered capability of Australian magnetic observatories to represent the magnetic storm Dst index in real time, combined with the established lognormal-form characteristic of Dst, means that Australian solar-terrestrial disturbance centers should be able to predict the time to recovery of quieter fields once an on-line Austrialian magnetic field Dst main-phase computation has been made.
机译：利用澳大利亚的记录，我们研究了六次孤立的地磁风暴对其相关磁场的区域影响，强调了台站位置和指数之间的线性回归相关系数。此处使用的一项创新是同时考虑整个磁干扰场和该场的形式，其中去除了平滑的风暴时间Dst值以具有较小的变化。来自整个大陆的成对台站的磁H分量数据显示相关值为+0.90至+0.97。这些结果表明，澳大利亚目前的天文台密度是足够的，它们在航空磁测中的应用价值。发现行星磁ap指数与澳大利亚H分量场之间存在不一致的关系。来自四个澳大利亚天文台的数据成功地代表了行星磁Dst指数。澳大利亚磁天文台发现的实时表示磁暴Dst指数的能力，再加上已建立的Dst的对数正态形式特征，意味着澳大利亚太阳地面扰动中心应该能够预测一次恢复较安静磁场的时间进行了在线奥地利磁场Dst主相计算。

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