太阳高能粒子事件期间地磁风暴对低地球轨道质子通量的影响

IF 3.7 2区 地球科学 Space Weather Pub Date : 2023-12-11 DOI:10.1029/2023sw003664
Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel
{"title":"太阳高能粒子事件期间地磁风暴对低地球轨道质子通量的影响","authors":"Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel","doi":"10.1029/2023sw003664","DOIUrl":null,"url":null,"abstract":"During a few solar energetic particle (SEP) events, solar protons were trapped within the geomagnetic field and reached the outer edge of the inner radiation belt. We reproduced this phenomenon by modeling the proton flux distribution at the Low-Earth Orbit (LEO) for different geomagnetic conditions during solar particle events. We developed a three-dimensional relativistic test particle simulation code to compute the 70–180 MeV solar proton Lorentz trajectories in low <i>L</i>-shell range from 1 to 3. The Tsyganenko model (T01) generated the background static magnetic field with the IGRF (v12) model. We have selected three <i>Dst</i> index values: −7, −150, and −210 nT, to define quiet time, strong, and severe geomagnetic storms and to generate the corresponding inner magnetic field configurations. Our results showed that the simulated solar proton flux was more enhanced in the high-latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. Satellite observations and geomagnetic cutoff rigidities confirmed the numerical results. Furthermore, the LEO proton flux distribution was deformed, so the structure of the proton flux inside the South Atlantic Anomaly (SAA) became longitudinally extended as the <i>Dst</i> index decreased. Moreover, we have assessed the corresponding radiation environment of the LEO mission. We realized that, for a higher inclined LEO mission during an intense geomagnetic storm (<i>Dst</i> = −210 nT), the probability of the occurrence of the Single Event Upset (SEU) rates increased by 19% and the estimated accumulated absorbed radiation doses increased by 17% in comparison with quiet conditions.","PeriodicalId":22181,"journal":{"name":"Space Weather","volume":"67 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Geomagnetic Storm Effects on the LEO Proton Flux During Solar Energetic Particle Events\",\"authors\":\"Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel\",\"doi\":\"10.1029/2023sw003664\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"During a few solar energetic particle (SEP) events, solar protons were trapped within the geomagnetic field and reached the outer edge of the inner radiation belt. We reproduced this phenomenon by modeling the proton flux distribution at the Low-Earth Orbit (LEO) for different geomagnetic conditions during solar particle events. We developed a three-dimensional relativistic test particle simulation code to compute the 70–180 MeV solar proton Lorentz trajectories in low <i>L</i>-shell range from 1 to 3. The Tsyganenko model (T01) generated the background static magnetic field with the IGRF (v12) model. We have selected three <i>Dst</i> index values: −7, −150, and −210 nT, to define quiet time, strong, and severe geomagnetic storms and to generate the corresponding inner magnetic field configurations. Our results showed that the simulated solar proton flux was more enhanced in the high-latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. Satellite observations and geomagnetic cutoff rigidities confirmed the numerical results. Furthermore, the LEO proton flux distribution was deformed, so the structure of the proton flux inside the South Atlantic Anomaly (SAA) became longitudinally extended as the <i>Dst</i> index decreased. Moreover, we have assessed the corresponding radiation environment of the LEO mission. We realized that, for a higher inclined LEO mission during an intense geomagnetic storm (<i>Dst</i> = −210 nT), the probability of the occurrence of the Single Event Upset (SEU) rates increased by 19% and the estimated accumulated absorbed radiation doses increased by 17% in comparison with quiet conditions.\",\"PeriodicalId\":22181,\"journal\":{\"name\":\"Space Weather\",\"volume\":\"67 1\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2023-12-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Space Weather\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1029/2023sw003664\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Space Weather","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1029/2023sw003664","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

在几次太阳高能粒子(SEP)事件中,太阳质子被困在地磁场内,并到达了内辐射带的外缘。我们通过模拟太阳粒子事件期间不同地磁条件下低地轨道(LEO)的质子通量分布,再现了这一现象。我们开发了一个三维相对论测试粒子模拟代码,以计算低 L 壳范围从 1 到 3 的 70-180 MeV 太阳质子洛伦兹轨迹。我们选择了三个 Dst 指数值:我们选择了三个 Dst 指数值:-7、-150 和 -210 nT,来定义静止时间、强地磁暴和严重地磁暴,并生成相应的内磁场配置。结果表明,只要地磁暴加强,模拟的太阳质子通量在高纬度地区就会增强,并向低纬度范围扩展。卫星观测和地磁截止刚度证实了数值结果。此外,低地轨道质子通量分布发生了变形,因此随着 Dst 指数的降低,南大西洋异常(SAA)内部的质子通量结构变得纵向延伸。此外,我们还评估了低地轨道任务的相应辐射环境。我们意识到,在强烈地磁暴期间(Dst = -210nT),对于倾斜度较大的低地球轨道飞行任务来说,与安静状态相比,发生单次事件骤变(SEU)的概率增加了 19%,估计的累积吸收辐射剂量增加了 17%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Geomagnetic Storm Effects on the LEO Proton Flux During Solar Energetic Particle Events
During a few solar energetic particle (SEP) events, solar protons were trapped within the geomagnetic field and reached the outer edge of the inner radiation belt. We reproduced this phenomenon by modeling the proton flux distribution at the Low-Earth Orbit (LEO) for different geomagnetic conditions during solar particle events. We developed a three-dimensional relativistic test particle simulation code to compute the 70–180 MeV solar proton Lorentz trajectories in low L-shell range from 1 to 3. The Tsyganenko model (T01) generated the background static magnetic field with the IGRF (v12) model. We have selected three Dst index values: −7, −150, and −210 nT, to define quiet time, strong, and severe geomagnetic storms and to generate the corresponding inner magnetic field configurations. Our results showed that the simulated solar proton flux was more enhanced in the high-latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. Satellite observations and geomagnetic cutoff rigidities confirmed the numerical results. Furthermore, the LEO proton flux distribution was deformed, so the structure of the proton flux inside the South Atlantic Anomaly (SAA) became longitudinally extended as the Dst index decreased. Moreover, we have assessed the corresponding radiation environment of the LEO mission. We realized that, for a higher inclined LEO mission during an intense geomagnetic storm (Dst = −210 nT), the probability of the occurrence of the Single Event Upset (SEU) rates increased by 19% and the estimated accumulated absorbed radiation doses increased by 17% in comparison with quiet conditions.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
29.70%
发文量
166
期刊最新文献
Quantification of Representation Error in the Neutral Winds and Ion Drifts Using Data Assimilation A Novel Ionospheric Inversion Model: PINN-SAMI3 (Physics Informed Neural Network Based on SAMI3) Nowcasting Solar EUV Irradiance With Photospheric Magnetic Fields and the Mg II Index Calculating the High-Latitude Ionospheric Electrodynamics Using a Machine Learning-Based Field-Aligned Current Model Effects of Forbush Decreases on the Global Electric Circuit
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1