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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Statistical analysis of ground-based chorus observations during geomagnetic storms
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Statistical analysis of ground-based chorus observations during geomagnetic storms

机译：统计分析的地面合唱观察在磁暴期间

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摘要

Chorus observations from two ground-based, Antarctic receiving stations are analyzed for a set of geomagnetic storms from 2000 to 2010. Superposed epoch analysis is performed together with statistical hypothesis testing to determine whether the observed quantities (geomagnetic indices, outer belt energetic electron fluxes, and chorus properties) are statistically significantly different as functions of storm phase, storm size, and storm type. Waves generated in the outer dayside magnetosphere and observed on the ground at South Pole Station are suppressed during main phase and are statistically unchanged from random intervals during recovery phase. Waves generated in the inner magnetosphere and observed on the ground at Palmer Station are significantly enhanced during storm main phase and for about 3 days into recovery. During main phase, there are larger enhancements in chorus occurrence, amplitude, and frequency extent as observed at Palmer during larger storms. During recovery phase, there are larger enhancements in chorus occurrence, amplitude, and frequency extent as observed at Palmer during larger storms and during storms where the average rate of electron flux increase, averaged across the outer belt, is higher.
机译：从两个地面合唱的观察,南极的接收站进行了分析从2000年到2010年的地磁风暴。叠加时代一起执行分析统计假设检验来确定是否被观测到的量(地磁指标,外部带高能电子通量,和合唱属性)是统计明显不同的函数风暴阶段,风暴大小和类型。生成和磁球外的光面观察到在南极站在地上在主要阶段和镇压从随机数据不变在复苏阶段。内磁层,观察到在地上帕尔默站期间显著增强风暴的主要阶段,大约3天复苏。增强一齐出现,振幅频率范围是观察在帕默更大的风暴。更大的增强一齐出现,振幅和频率上观察到帕默在大风暴,风暴电子通量的平均速率增加,平均整个外腰带,较高。

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