| 磁暴感应地电场波形反演 |
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| 引用本文： | 吴一凡. 磁暴感应地电场波形反演[J]. 地震地磁观测与研究, 2018, 39(3): 76-80. DOI: 10.3969/j.issn.1003-3246.2018.03.011 |
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| 作者姓名： | 吴一凡 |
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| 作者单位： | 中国海口 570203 海南省地震局 |
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| 摘 要： | 研究表明，同一区域地电暴记录与地磁场变化率在形态、幅度及周期成分上呈现出较强的相关性。采用磁暴期间电磁场观测数据，基于一维水平层状电性介质模型对地电暴波形进行拟合，反演地下介质电性结构。结果表明，地电暴拟合波形与观测记录一致性较好，利用反演确定的大地电性结构参数和其他磁暴事件，计算得到的理论感应地电场与观测结果相符合。
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| 关 键 词： | 磁暴 地电场 数据拟合 反演 |
Geomagnetic storm induced geoelectric field inversion |
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| Wu Yifan. Geomagnetic storm induced geoelectric field inversion[J]. Seismological and Geomagnetic Observation and Research, 2018, 39(3): 76-80. DOI: 10.3969/j.issn.1003-3246.2018.03.011 |
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| Authors: | Wu Yifan |
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| Affiliation: | Hainan Earthquake Agency, Haikou 570203, China |
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| Abstract: | Previous study showed that geoelectric field has a high correlation with geomagnetic storm variation rate in waveform, amplitude and period. In this study, geoelectric storm observation data from geomagnetic storm record are fitted based on one-dimensional horizontal layered dielectric model, and geoelectric structure is inversed. As a result, the fitted geoelectric field is highly consistent with observed one. The computed geoelectric field from another geomagnetic storm event, using inversed geoelectric parameters, matches the observed record. This approach can be used to compute and predict geomagnetic storm induced geoelectric field at earth surface with one-dimensional horizontal layered dielectrics structure. |
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| Keywords: | geomagnetic storm geoelectric field data fitting inversion |
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