Characteristics of High-Energy Proton Responses to Geomagnetic Activities in the Inner Radiation Belt Observed by the RBSP Satellite
文献类型：期刊论文
| 作者 | Xu, Jiyao; He, Zhaohai; Baker, D. N.; Roth, Ilan; Wang, Chi; Kanekal, S. G.; Jaynes, A. N.; Liu, Xiao |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:9页码:7581-7591 |
| 关键词 | inner radiation belt geomagnetic activities high-energy proton prompt responses one-to-one correspondence RBSP satellite |
| ISSN号 | 2169-9380 |
| DOI | 10.1029/2018JA026205 |
| 英文摘要 | High-energy trapped particles in the radiation belts constitute potential threats to the functionality of satellites as they enter into those regions. In the inner radiation belt, the characteristics of high-energy (>20 MeV) protons variations during geomagnetic activity times have been studied by implementing 4-year (2013-2016) observations of the Van Allen probes. An empirical formula has been used to remove the satellite orbit effect, by which proton fluxes have been normalized to the geomagnetic equator. Case studies show that the region of L < 1.7 is relatively stable, while L > 1.7 is more dynamic and the most significant variation of proton fluxes occurs at L = 2.0. The 4-year survey at L = 2.0 indicates that for every geomagnetic storm, sharp descent in proton fluxes is accompanied by the corresponding depression of SYM-H index, with a one-to-one correspondence, regardless of the storm intensity. Proton flux dropouts are synchronous with SYM-H reduction with similar short timescales. Our observational results reveal that high-energy protons in the inner radiation belt are very dynamic, especially for the outer zone of the inner belt, which is beyond our previous knowledge. |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/7200]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Xu, Jiyao,He, Zhaohai,Baker, D. N.,et al. Characteristics of High-Energy Proton Responses to Geomagnetic Activities in the Inner Radiation Belt Observed by the RBSP Satellite[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(9):7581-7591. |
| APA | Xu, Jiyao.,He, Zhaohai.,Baker, D. N..,Roth, Ilan.,Wang, Chi.,...&Liu, Xiao.(2019).Characteristics of High-Energy Proton Responses to Geomagnetic Activities in the Inner Radiation Belt Observed by the RBSP Satellite.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(9),7581-7591. |
| MLA | Xu, Jiyao,et al."Characteristics of High-Energy Proton Responses to Geomagnetic Activities in the Inner Radiation Belt Observed by the RBSP Satellite".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.9(2019):7581-7591. |
入库方式： OAI收割
来源：国家空间科学中心
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