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首页> 外文期刊>Canadian Journal of Pure and Applied Sciences >EQUINOCTIAL ASYMMETRY IN GEOMAGNETIC ACTIVITY IN AURORAL AND SUBAURORAL REGIONS
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EQUINOCTIAL ASYMMETRY IN GEOMAGNETIC ACTIVITY IN AURORAL AND SUBAURORAL REGIONS

机译：地域和亚地域的地磁活动中的等距不对称性

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Geomagnetically induced current (GIC) affect the normal operation of technological systems and are manifestations at ground level of space weather. The maximum GIC values are proxy to the maximum value of time derivatives of the horizontal field (dH/dt). 264 substorms events were obtained from IMAGE magnetometer data from Northern Europe, using Dst to determine the substorm events of varying strengths (from -90nT up to -1800nT) from 1992-2007, and were statistically analysed. In this study we found the maximum time derivatives of the horizontal magnetic field to be statistically significant in October at auroral and subauroral regions. Seasonal variations are also seen, Autumn being more geomagnetically active than other seasons. Our result shows a high correlation of 0.886 and 0.854 in auroral and subauroral regions between the max dH/dt and max AE index. The test of correlation between dH/dt and measured ionospheric response (AE) shows a close relationship between dH/dt and geomagnetic disturbance, and which could improve our space weather prediction systems.
机译：地磁感应电流（GIC）影响技术系统的正常运行，是太空天气在地面上的表现。 GIC的最大值代表水平场时间导数的最大值（dH / dt）。从北欧的IMAGE磁力计数据中获得了264次亚暴事件，使用Dst来确定1992-2007年不同强度（从-90nT到-1800nT）的亚暴事件，并进行了统计分析。在这项研究中，我们发现十月在极光和极光下区域，水平磁场的最大时间导数具有统计学意义。还可以看到季节变化，秋季比其他季节更活跃地磁。我们的结果表明，最大dH / dt和最大AE指数之间在极光和极光下区域的相关性较高，为0.886和0.854。 dH / dt与测得的电离层响应（AE）之间的相关性测试表明，dH / dt与地磁干扰之间存在密切的关系，这可以改善我们的空间天气预报系统。

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