{"title":"Geomagnetic Effect of the Solar Eclipse of October 25, 2022, in Eurasia","authors":"L. F. Chernogor, M. Yu. Holub","doi":"10.3103/s0884591324030024","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\n<b>Abstract</b>—</h3><p>A solar eclipse (SE) can cause disturbances in all subsystems of the Earth–atmosphere–ionosphere–magnetosphere system, including the geomagnetic field. Using the data obtained at 15 stations of the INTERMAGNET network, the temporal variations of all components of the geomagnetic field are analyzed. It is found that the SE has been accompanied by a disturbance of the <i>X-</i>, <i>Y-</i>, and <i>Z-</i>components. The largest disturbances have been detected for the <i>X-</i>component (south–north). There has been a steady tendency to increase the disturbance of the <i>X-</i>component with an increase in the area of the solar disk obscuration. The disturbance magnitude of the <i>X-</i>component level under the influence of the SE is calculated. It is believed that the main mechanism for generating the magnetic effect is the disturbance of the ionospheric current system at the heights of the dynamo region. The results of observations and calculations are in good agreement with each other. In addition to a stable aperiodic effect lasting approximately 100…180 min, an increase in the range of fluctuations in the geomagnetic field level has been observed during the SE. This may indicate the generation of quasi-periodic disturbances of the geomagnetic field in the range of atmospheric gravity waves.</p>","PeriodicalId":681,"journal":{"name":"Kinematics and Physics of Celestial Bodies","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kinematics and Physics of Celestial Bodies","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.3103/s0884591324030024","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract—
A solar eclipse (SE) can cause disturbances in all subsystems of the Earth–atmosphere–ionosphere–magnetosphere system, including the geomagnetic field. Using the data obtained at 15 stations of the INTERMAGNET network, the temporal variations of all components of the geomagnetic field are analyzed. It is found that the SE has been accompanied by a disturbance of the X-, Y-, and Z-components. The largest disturbances have been detected for the X-component (south–north). There has been a steady tendency to increase the disturbance of the X-component with an increase in the area of the solar disk obscuration. The disturbance magnitude of the X-component level under the influence of the SE is calculated. It is believed that the main mechanism for generating the magnetic effect is the disturbance of the ionospheric current system at the heights of the dynamo region. The results of observations and calculations are in good agreement with each other. In addition to a stable aperiodic effect lasting approximately 100…180 min, an increase in the range of fluctuations in the geomagnetic field level has been observed during the SE. This may indicate the generation of quasi-periodic disturbances of the geomagnetic field in the range of atmospheric gravity waves.
摘要 日食可对地球-大气层-电离层-磁层系统的所有子系统（包括地磁场）造成扰动。本文利用 INTERMAGNET 网络 15 个站点获得的数据，分析了地磁场各组成部分的时间变化。结果发现，SE 伴随着 X、Y 和 Z 分量的扰动。X 分量（南-北）的扰动最大。随着日盘遮挡面积的增加，X分量的扰动也呈稳定上升趋势。计算了在 SE 影响下 X 分量水平的扰动幅度。据认为，产生磁效应的主要机制是对动力区高度的电离层电流系统的扰动。观测结果和计算结果非常吻合。除了持续约 100...180 分钟的稳定非周期性效应外，在 SE 期间还观测到地磁场水平波动范围增大。这可能表明在大气重力波范围内产生了地磁场准周期性扰动。
期刊介绍：
Kinematics and Physics of Celestial Bodies is an international peer reviewed journal that publishes original regular and review papers on positional and theoretical astronomy, Earth’s rotation and geodynamics, dynamics and physics of bodies of the Solar System, solar physics, physics of stars and interstellar medium, structure and dynamics of the Galaxy, extragalactic astronomy, atmospheric optics and astronomical climate, instruments and devices, and mathematical processing of astronomical information. The journal welcomes manuscripts from all countries in the English or Russian language.
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