Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake
Daily variation ratio of geomagnetic vertical component （Z） is important in the study of earthquake precursor analysis. The ariation magnetic field makes an induced magnetic field because of the earth conductivity, and the induced magnetic field includes information from outer magnetic field and und...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Progress in Earthquake Sciences
2020-05-01
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| Series: | 地震科学进展 |
| Subjects: | |
| Online Access: | https://www.gjdzdt.cn/en/article/doi/10.3969/j.issn.2096-7780.2020.05.003 |
| _version_ | 1797858706005688320 |
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| author | Mingrui Guo Jiuchang Hu Xijiao Wang Long Ma Guidan Wang Zaizhuang Zheng |
| author_facet | Mingrui Guo Jiuchang Hu Xijiao Wang Long Ma Guidan Wang Zaizhuang Zheng |
| author_sort | Mingrui Guo |
| collection | DOAJ |
| description | Daily variation ratio of geomagnetic vertical component （Z） is important in the study of earthquake precursor analysis. The ariation magnetic field makes an induced magnetic field because of the earth conductivity, and the induced magnetic field includes information from outer magnetic field and underground electrical conductivity, so the geomagnetic field Z component reflects more changes of underground activity than other components. The paper processes the geomagnetic vertical component data of partial geomagnetism of south China stations located in the study area by using the ratio of daily variation amplitude method. The results show here existed high value anomaly of load on December 22, 2014, and the earthquake occurred 99 days after the anomaly date. The double low point is the phase and amplitude change of the geomagnetic Z component, from the normal V-shape to the W-type. To change the normal diurnal pattern, 57 days before the earthquake, most regions such as Guizhou, Guangxi, Hainan, Hunan a double low anomalies. Near the epicenter is located in the low anomaly dividing line, the emergence of geomagnetic low-value displacement associated with earthquake gestation and occurrence. This paper combines daily ratio and double low point to predict earthquake, which can improve its credibility. |
| first_indexed | 2024-04-09T21:17:42Z |
| format | Article |
| id | doaj.art-b172215d01894f809a011f3359f65061 |
| institution | Directory Open Access Journal |
| issn | 2096-7780 |
| language | zho |
| last_indexed | 2024-04-09T21:17:42Z |
| publishDate | 2020-05-01 |
| publisher | Editorial Office of Progress in Earthquake Sciences |
| record_format | Article |
| series | 地震科学进展 |
| spelling | doaj.art-b172215d01894f809a011f3359f650612023-03-28T06:57:53ZzhoEditorial Office of Progress in Earthquake Sciences地震科学进展2096-77802020-05-01505121710.3969/j.issn.2096-7780.2020.05.003guomingrui01Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquakeMingrui Guo0Jiuchang Hu1Xijiao Wang2Long Ma3Guidan Wang4Zaizhuang Zheng5Hainan Earthquake Agency, Haikou 570203, ChinaHainan Earthquake Agency, Haikou 570203, ChinaHainan Earthquake Agency, Haikou 570203, ChinaHainan Earthquake Agency, Haikou 570203, ChinaHainan Earthquake Agency, Haikou 570203, ChinaHainan Earthquake Agency, Haikou 570203, ChinaDaily variation ratio of geomagnetic vertical component （Z） is important in the study of earthquake precursor analysis. The ariation magnetic field makes an induced magnetic field because of the earth conductivity, and the induced magnetic field includes information from outer magnetic field and underground electrical conductivity, so the geomagnetic field Z component reflects more changes of underground activity than other components. The paper processes the geomagnetic vertical component data of partial geomagnetism of south China stations located in the study area by using the ratio of daily variation amplitude method. The results show here existed high value anomaly of load on December 22, 2014, and the earthquake occurred 99 days after the anomaly date. The double low point is the phase and amplitude change of the geomagnetic Z component, from the normal V-shape to the W-type. To change the normal diurnal pattern, 57 days before the earthquake, most regions such as Guizhou, Guangxi, Hainan, Hunan a double low anomalies. Near the epicenter is located in the low anomaly dividing line, the emergence of geomagnetic low-value displacement associated with earthquake gestation and occurrence. This paper combines daily ratio and double low point to predict earthquake, which can improve its credibility.https://www.gjdzdt.cn/en/article/doi/10.3969/j.issn.2096-7780.2020.05.003ratio and ratio of daily variation amplitudegeomagnetic vertical componentgeomagnetic low-point displacementdaily ratio of geomagnetic vertical component |
| spellingShingle | Mingrui Guo Jiuchang Hu Xijiao Wang Long Ma Guidan Wang Zaizhuang Zheng Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake 地震科学进展 ratio and ratio of daily variation amplitude geomagnetic vertical component geomagnetic low-point displacement daily ratio of geomagnetic vertical component |
| title | Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake |
| title_full | Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake |
| title_fullStr | Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake |
| title_full_unstemmed | Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake |
| title_short | Analysis of geomagnetic anomalies before the Jianhe M5.5 earthquake |
| title_sort | analysis of geomagnetic anomalies before the jianhe m5 5 earthquake |
| topic | ratio and ratio of daily variation amplitude geomagnetic vertical component geomagnetic low-point displacement daily ratio of geomagnetic vertical component |
| url | https://www.gjdzdt.cn/en/article/doi/10.3969/j.issn.2096-7780.2020.05.003 |
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