{"title":"2021年11月3日地磁风暴期间南美洲f区电离层异常抑制的多仪器分析","authors":"Gilda de Lourdes González","doi":"10.1007/s40328-024-00458-7","DOIUrl":null,"url":null,"abstract":"<div><p>Equatorial ionospheric irregularities have the potential to disrupt radio communications and satellite-based navigation. The influence of geomagnetic storms on these disturbances remains not fully understood, particularly in how they may initiate or inhibit the irregularities (also called Equatorial Plasma Bubbles, EPBs). Enhanced predictive capabilities require comprehensive studies of the ionosphere’s behavior, especially within the equatorial ionization anomaly (EIA) zone, where such irregularities are more pronounced. This study examines the effect of the November 3, 2021, geomagnetic storm on equatorial ionospheric irregularities in the F region over South America. We used data from multiple instruments, including GPS, GOLD, ICON, ionosondes, SuperDARN, and AMPERE, to analyze the role of the storm-time electric fields in the day-to-day dynamics of EPBs. We found that irregularities were suppressed during the storm’s main and recovery phases. Our results suggest that the inhibition of ionospheric irregularities in the F region may be associated with a combination of westward under-shielding penetration electric field and disturbance dynamo electric fields. The present study may contribute to advancing our understanding of the ionospheric response to geomagnetic storms and to develop better predictive models for space weather impacts.</p></div>","PeriodicalId":48965,"journal":{"name":"Acta Geodaetica et Geophysica","volume":"60 1","pages":"137 - 161"},"PeriodicalIF":1.4000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multi-instrument analysis of F-region ionospheric irregularities suppression over South America during the November 3, 2021, geomagnetic storm\",\"authors\":\"Gilda de Lourdes González\",\"doi\":\"10.1007/s40328-024-00458-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Equatorial ionospheric irregularities have the potential to disrupt radio communications and satellite-based navigation. The influence of geomagnetic storms on these disturbances remains not fully understood, particularly in how they may initiate or inhibit the irregularities (also called Equatorial Plasma Bubbles, EPBs). Enhanced predictive capabilities require comprehensive studies of the ionosphere’s behavior, especially within the equatorial ionization anomaly (EIA) zone, where such irregularities are more pronounced. This study examines the effect of the November 3, 2021, geomagnetic storm on equatorial ionospheric irregularities in the F region over South America. We used data from multiple instruments, including GPS, GOLD, ICON, ionosondes, SuperDARN, and AMPERE, to analyze the role of the storm-time electric fields in the day-to-day dynamics of EPBs. We found that irregularities were suppressed during the storm’s main and recovery phases. Our results suggest that the inhibition of ionospheric irregularities in the F region may be associated with a combination of westward under-shielding penetration electric field and disturbance dynamo electric fields. The present study may contribute to advancing our understanding of the ionospheric response to geomagnetic storms and to develop better predictive models for space weather impacts.</p></div>\",\"PeriodicalId\":48965,\"journal\":{\"name\":\"Acta Geodaetica et Geophysica\",\"volume\":\"60 1\",\"pages\":\"137 - 161\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2024-12-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Geodaetica et Geophysica\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40328-024-00458-7\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Geodaetica et Geophysica","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s40328-024-00458-7","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Multi-instrument analysis of F-region ionospheric irregularities suppression over South America during the November 3, 2021, geomagnetic storm
Equatorial ionospheric irregularities have the potential to disrupt radio communications and satellite-based navigation. The influence of geomagnetic storms on these disturbances remains not fully understood, particularly in how they may initiate or inhibit the irregularities (also called Equatorial Plasma Bubbles, EPBs). Enhanced predictive capabilities require comprehensive studies of the ionosphere’s behavior, especially within the equatorial ionization anomaly (EIA) zone, where such irregularities are more pronounced. This study examines the effect of the November 3, 2021, geomagnetic storm on equatorial ionospheric irregularities in the F region over South America. We used data from multiple instruments, including GPS, GOLD, ICON, ionosondes, SuperDARN, and AMPERE, to analyze the role of the storm-time electric fields in the day-to-day dynamics of EPBs. We found that irregularities were suppressed during the storm’s main and recovery phases. Our results suggest that the inhibition of ionospheric irregularities in the F region may be associated with a combination of westward under-shielding penetration electric field and disturbance dynamo electric fields. The present study may contribute to advancing our understanding of the ionospheric response to geomagnetic storms and to develop better predictive models for space weather impacts.
期刊介绍:
The journal publishes original research papers in the field of geodesy and geophysics under headings: aeronomy and space physics, electromagnetic studies, geodesy and gravimetry, geodynamics, geomathematics, rock physics, seismology, solid earth physics, history. Papers dealing with problems of the Carpathian region and its surroundings are preferred. Similarly, papers on topics traditionally covered by Hungarian geodesists and geophysicists (e.g. robust estimations, geoid, EM properties of the Earth’s crust, geomagnetic pulsations and seismological risk) are especially welcome.