Abstract

In this study, we have investigated the effect of supersubstorm of September 7 and 8, occurred during magnetic storm of September 7–8, 2017 on horizontal component of geomagnetic field (H) upon the high latitude (ABK, FCC, MGD and UPS), middle latitude (ABG, BOU, DUR and PHU) and low latitude (API, GUA, KOU, and MBO) stations. From these different stations, complexities in the characteristics of H component were identified, showing diverse effects during the supersubstorm. To characterize the common features associated with various intrinsic processes for transfer of energy during the event, the continuous wavelet technique (CWT) and cross correlation analysis are used. The CWT identified a significant energy pattern in the signal of high spectral variability from time scale 1 to 2 minutes during 24 and 37 hours. The cross correlation analysis suggests that the perturbation in H component at all latitude strongly correlates with FAC, PCV, TE, AP, JH and RC respectively. This study helps to understand energy dynamics, potential and current within the magnetosphere, in the form of FAC, PCV, RC, JH, AP and TE during SSSs.

中文翻译：

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2017年9月7日至8日超级亚暴期间磁扰的小波分析

摘要

在本研究中，我们研究了 2017 年 9 月 7 日至 8 日磁暴期间发生的 9 月 7 日和 8 日超级亚暴对高纬度地磁场 (H) 水平分量的影响（ABK、FCC、MGD 和 UPS） 、中纬度（ABG、BOU、DUR 和 PHU）和低纬度（API、GUA、KOU 和 MBO）站。从这些不同的台站，我们发现了 H 成分特征的复杂性，在超级亚暴期间表现出不同的影响。为了表征事件期间能量转移的各种内在过程相关的共同特征，使用了连续小波技术（CWT）和互相关分析。CWT 在 24 和 37 小时期间从 1 到 2 分钟的时间尺度识别出高光谱变异性信号中的显着能量模式。互相关分析表明，各纬度H分量的扰动分别与FAC、PCV、TE、AP、JH和RC强相关。这项研究有助于了解 SSS 期间磁层内的能量动态、电势和电流，以 FAC、PCV、RC、JH、AP 和 TE 的形式。