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Behaviour of auroral activity as a function of the interplanetary magnetic field

机译:极光活动的行为与行星际磁场的函数

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Variations of power flux in northern and southern hemispheres were analysed as a function of the interplanetary magnetic field orientation near the Earth. The period since 1978 till 2001 was covered. It is shown that power flux increases when the magnetic field has B_z < 0 and B_y < 0, and when the magnitude of the interplanetary magnetic field increases. Auroral activity is maximum near the equinoxes and is minimum near the solstices. The dependence of the auroral activity on IMF orientation has a strong asymmetry in heliographic inertial coordinates. A seasonal asymmetry of the power flux distribution in GSM system may be explained by a global asymmetry of the same distribution in the heliographic inertial coordinates.
机译:分析了北半球和南半球的功率通量变化,它是地球附近行星际磁场方向的函数。涵盖了从1978年到2001年的这段时期。结果表明,当磁场的B_z <0和B_y <0时,以及当行星际磁场的强度增加时,功率通量都会增加。昼夜平分点附近的极光活动最大,而至露点附近的极光活动最小。极光活动对IMF方向的依赖性在螺旋惯性坐标中具有很强的不对称性。 GSM系统中功率通量分布的季节性不对称性可以通过在惯性坐标系中相同分布的全局不对称性来解释。

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