Complexity signatures in the geomagnetic H component recorded by the Tromso magnetometer (70 degrees N, 19 degrees E) over the last quarter of a century

Hall C. M.

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Complexity signatures in the geomagnetic H component recorded by the Tromso magnetometer (70 degrees N, 19 degrees E) over the last quarter of a century

机译：特罗姆瑟磁力计（北纬70度，东经19度）记录的地磁H分量的复杂性特征

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Solar disturbances, depending on the orientation of the interplanetary magnetic field, typically result in perturbations of the geomagnetic field as observed by magnetometers on the ground. Here, the geomagnetic field's horizontal component, as measured by the ground-based observatory-standard magnetometer at Tromso (70 degrees N, 19 degrees E), is examined for signatures of complexity. Twenty-five year-long 10 s resolution data sets are analysed for fluctuations with timescales of less than 1 day. Quantile-quantile plots are employed first, revealing that the fluctuations are better represented by Cauchy rather than Gaussian distributions. Thereafter, both spectral density and detrended fluctuation analysis methods are used to estimate values of the generalized Hurst exponent, alpha. The results are then compared with independent findings. Inspection and comparison of the spectral and detrended fluctuation analyses reveal that timescales between 1 h and 1 day are characterized by fractional Brownian motion with a generalized Hurst exponent of similar to 1.4, whereas including timescales as short as 1 min suggests fractional Brownian motion with a generalized Hurst exponent of similar to 1.6.

机译：太阳干扰取决于行星际磁场的方向，通常会导致地磁场的扰动，如地面上的磁力计所观察到的。在这里，对地面磁场的水平分量（由地面观测台标准磁力计在Tromso（北纬70度，东经19度）测量）进行了复杂性检验。分析了长达25年的10 s分辨率数据集的时标小于1天的波动。首先采用分位数-分位数图，这表明用柯西比高斯分布更好地表示波动。此后，频谱密度和去趋势波动分析方法都用于估计广义赫斯特指数α的值。然后将结果与独立发现进行比较。对频谱和趋势变化的波动分析的检查和比较表明，在1 h和1天之间的时间尺度具有分数布朗运动，广义Hurst指数接近1.4，而包括短至1分钟的时间尺度则表明分数布朗运动具有广义Hurst指数。赫斯特指数类似于1.6。

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《Nonlinear processes in geophysics》 |2014年第5期|共8页
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Hall C. M.;
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1. Complexity signatures in the geomagnetic H component recorded by the Tromso magnetometer (70 degrees N, 19 degrees E) over the last quarter of a century [J] . Hall C. M. Nonlinear processes in geophysics . 2014,第5期

机译：特罗姆瑟磁力计（北纬70度，东经19度）记录的地磁H分量的复杂性特征
2. Complexity signatures in the geomagnetic iH/i component recorded by the Troms? magnetometer (70° N, 19° E) over the last quarter of a century [J] . Hall C. M. Nonlinear processes in geophysics . 2014,第5期

机译：Troms记录的地磁 H 分量中的复杂性签名？在最后一个四分之一世纪中的磁力计（70°N，19°E）
3. Complexity signatures in the geomagnetic H component recorded by the Troms? magnetometer (70 N, 19 E) over the last quarter of a century [J] . Hall C. M. Nonlinear Processes in Geophysics Discussions . 2014,第5期

机译：TROM记录的地磁H组件中的复杂性签名？磁力计（70吨，19 e）在上四分之一世纪
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7. Complexity signatures in the geomagnetic H component recorded by the Tromsø magnetometer (70° N, 19° E) over the last quarter of a century [O] . C. M. Hall 2014

机译：在过去的四分之一世纪中，由Tromsø磁力计（70°N，19°E）记录的地磁 H 组件中的复杂性特征

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Complexity signatures in the geomagnetic H component recorded by the Tromso magnetometer (70 degrees N, 19 degrees E) over the last quarter of a century

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