The Frequency-Domain Characterization of Cosmic Ray Intensity Variations Before Forbush Decreases Associated With Geomagnetic Storms
文献类型：期刊论文
| 作者 | Ye, Qian1,2; Wang, Cong1,2; He, Fei3; Xue, Bingsen1,2; Zhang, Xiaoxin1,2 |
| 刊名 | SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 20期号:3页码:16 |
| 关键词 | non-recurrent storm continuous wavelet transform Cosmic Ray Intensity Empirical Mode Decomposition precursor |
| DOI | 10.1029/2021SW002863 |
| 英文摘要 | Nonrecurrent geomagnetic storms caused by Coronal Mass Ejection (CME) can induce serious impacts on space- and ground-based equipment. However, these nonrecurrent geomagnetic storms are hard to predict since CMEs are not periodic. Previous studies have shown that the variations of Cosmic Ray Intensity (CRI) before nonrecurrent storms may forebode the coming geomagnetic storm. But it is difficult to extract the variations since the cosmic ray flux is a complex signal. In order to identify the precursory signal in CRI variations triggered by CME, an ensemble self-adaptive time-frequency analysis method was proposed and applied to 65 nonrecurrent geomagnetic storms occurred between 1998 and 2019. The results indicate that the precursory signals are successfully identified in 43 of 45 storms, after excluding 20 storms accompanied by ground level enhancement. In addition, it is also found that the spectral density of the precursory signal could reflect the active level of geomagnetic condition, which is lower during geomagnetic quiet period. |
| WOS关键词 | CORONAL MASS EJECTIONS ; SPACE WEATHER ; ANISOTROPY ; EARTH ; IMPACT |
| 资助项目 | National Natural Science Foundation of China[41931073] ; National Natural Science Foundation of China[41774152] ; National Key R&D Program of China[2021YFA0718600] |
| WOS研究方向 | Astronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000776591600003 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105095]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Zhang, Xiaoxin |
| 作者单位 | 1.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing, Peoples R China 2.China Meteorol Adm, Natl Ctr Space Weather, Key Lab Space Weather, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Qian,Wang, Cong,He, Fei,et al. The Frequency-Domain Characterization of Cosmic Ray Intensity Variations Before Forbush Decreases Associated With Geomagnetic Storms[J]. SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS,2022,20(3):16. |
| APA | Ye, Qian,Wang, Cong,He, Fei,Xue, Bingsen,&Zhang, Xiaoxin.(2022).The Frequency-Domain Characterization of Cosmic Ray Intensity Variations Before Forbush Decreases Associated With Geomagnetic Storms.SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS,20(3),16. |
| MLA | Ye, Qian,et al."The Frequency-Domain Characterization of Cosmic Ray Intensity Variations Before Forbush Decreases Associated With Geomagnetic Storms".SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS 20.3(2022):16. |
入库方式： OAI收割
来源：地质与地球物理研究所
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