Ionospheric total electron content disturbance associated with May 12, 2008, Wenchuan earthquake
Possible ionospheric disturbances relating to the May 12, 2008, MsS.0 Wenchuan earthquake were identified by Global Positioning System （GPS）-derived total electron content （TEC）, ion- osonde observations, the global ionospheric map （GIM）, and electron density profiles detected by the Constellation O...
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| Published in | Geodesy and Geodynamics Vol. 6; no. 2; pp. 126 - 134 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.03.2015
KeAi Communications Co., Ltd |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-9847 2589-0573 2589-0573 |
| DOI | 10.1016/j.geog.2015.01.003 |
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| Abstract | Possible ionospheric disturbances relating to the May 12, 2008, MsS.0 Wenchuan earthquake were identified by Global Positioning System （GPS）-derived total electron content （TEC）, ion- osonde observations, the global ionospheric map （GIM）, and electron density profiles detected by the Constellation Observation System for Meteorology Ionosphere and Climate （COSMIC）. We applied a statistical test to detect anomalous TEC signals and found that a unique enhancement in TEC, recorded at 16 GPS stations, appeared on May 9, 2008. The critical fre- quency at F2 peak （foF2）, observed by the Chinese ionosondes, and maximal plasma frequency, derived from COSMIC data, revealed a characteristic similar to GPS TEC variations. The GIM showed that the anomalous variations of May 9 were located southeast of the epicenter. Using GPS data from 13 stations near the epicenter, we analyzed the TEC variations of satellite orbit traces during 04：00-11：00 UT. We found that TEC decreased to the east and increased to the southeast of the epicenter during this period. Results showed that the abnormal disturbance on May 9 was probably an ionosphenc precursor of the Wenchuan earthquake of May 12, 2008. |
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| AbstractList | Possible ionospheric disturbances relating to the May 12, 2008, Ms8.0 Wenchuan earthquake were identified by Global Positioning System (GPS)-derived total electron content (TEC), ionosonde observations, the global ionospheric map (GIM), and electron density profiles detected by the Constellation Observation System for Meteorology Ionosphere and Climate (COSMIC). We applied a statistical test to detect anomalous TEC signals and found that a unique enhancement in TEC, recorded at 16 GPS stations, appeared on May 9, 2008. The critical frequency at F2 peak (f0F2), observed by the Chinese ionosondes, and maximal plasma frequency, derived from COSMIC data, revealed a characteristic similar to GPS TEC variations. The GIM showed that the anomalous variations of May 9 were located southeast of the epicenter. Using GPS data from 13 stations near the epicenter, we analyzed the TEC variations of satellite orbit traces during 04:00–11:00 UT. We found that TEC decreased to the east and increased to the southeast of the epicenter during this period. Results showed that the abnormal disturbance on May 9 was probably an ionospheric precursor of the Wenchuan earthquake of May 12, 2008. Possible ionospheric disturbances relating to the May 12, 2008, MsS.0 Wenchuan earthquake were identified by Global Positioning System （GPS）-derived total electron content （TEC）, ion- osonde observations, the global ionospheric map （GIM）, and electron density profiles detected by the Constellation Observation System for Meteorology Ionosphere and Climate （COSMIC）. We applied a statistical test to detect anomalous TEC signals and found that a unique enhancement in TEC, recorded at 16 GPS stations, appeared on May 9, 2008. The critical fre- quency at F2 peak （foF2）, observed by the Chinese ionosondes, and maximal plasma frequency, derived from COSMIC data, revealed a characteristic similar to GPS TEC variations. The GIM showed that the anomalous variations of May 9 were located southeast of the epicenter. Using GPS data from 13 stations near the epicenter, we analyzed the TEC variations of satellite orbit traces during 04：00-11：00 UT. We found that TEC decreased to the east and increased to the southeast of the epicenter during this period. Results showed that the abnormal disturbance on May 9 was probably an ionosphenc precursor of the Wenchuan earthquake of May 12, 2008. |
| Author | Li Jianyong Meng Guojie You Xinzhao Zhang Rui Shi Hongbo Han Yufei |
| AuthorAffiliation | National Earthquake Infrastructure Service, Beijing 100036, China Institute of Earthquake Science, China Earthquake Administration, Beijin9 100036, China State Key Laboratory of Geodesy and Earth＇s Dynamics, Institute of Geodesy and Geophysics,Chinese Academy of Sciences, Wuhan 430077, China |
| Author_xml | – sequence: 1 givenname: Jianyong surname: Li fullname: Li, Jianyong email: jyli@neis.cn organization: National Earthquake Infrastructure Service, Beijing 100036, China – sequence: 2 givenname: Guojie surname: Meng fullname: Meng, Guojie organization: Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China – sequence: 3 givenname: Xinzhao surname: You fullname: You, Xinzhao organization: National Earthquake Infrastructure Service, Beijing 100036, China – sequence: 4 givenname: Rui surname: Zhang fullname: Zhang, Rui organization: National Earthquake Infrastructure Service, Beijing 100036, China – sequence: 5 givenname: Hongbo surname: Shi fullname: Shi, Hongbo organization: National Earthquake Infrastructure Service, Beijing 100036, China – sequence: 6 givenname: Yufei surname: Han fullname: Han, Yufei organization: National Earthquake Infrastructure Service, Beijing 100036, China |
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| Cites_doi | 10.1029/1999JB900423 10.3724/SP.J.1246.2011.00061 10.3724/SP.J.1246.2011.00048 10.1007/BF00876083 10.1029/2008JA013613 10.22201/igeof.00167169p.2005.44.4.237 10.1029/2000GL011395 10.1029/2000GL012511 10.5194/angeo-22-1585-2004 10.1007/s11589-009-0545-9 10.1029/2008JA013698 10.1029/JZ070i005p01250 10.1029/JZ069i014p03019 10.1023/A:1024046814173 10.1016/S0264-3707(02)00011-X 10.1029/2006EO170003 10.1016/S0273-1177(97)00880-6 10.3724/SP.J.1246.2011.00008 10.1029/95GL00168 10.3724/SP.J.1246.2010.00023 10.1016/S0273-1177(99)01223-5 |
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| Keywords | Crustal Movement Observation Network of China (CMONOC) Wenchuan earthquake COSMIC Ionospheric disturbance Global ionospheric map (GIM) Global positioning system (GPS) Total electron content (TEC) f0F2 |
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| Notes | Possible ionospheric disturbances relating to the May 12, 2008, MsS.0 Wenchuan earthquake were identified by Global Positioning System （GPS）-derived total electron content （TEC）, ion- osonde observations, the global ionospheric map （GIM）, and electron density profiles detected by the Constellation Observation System for Meteorology Ionosphere and Climate （COSMIC）. We applied a statistical test to detect anomalous TEC signals and found that a unique enhancement in TEC, recorded at 16 GPS stations, appeared on May 9, 2008. The critical fre- quency at F2 peak （foF2）, observed by the Chinese ionosondes, and maximal plasma frequency, derived from COSMIC data, revealed a characteristic similar to GPS TEC variations. The GIM showed that the anomalous variations of May 9 were located southeast of the epicenter. Using GPS data from 13 stations near the epicenter, we analyzed the TEC variations of satellite orbit traces during 04：00-11：00 UT. We found that TEC decreased to the east and increased to the southeast of the epicenter during this period. Results showed that the abnormal disturbance on May 9 was probably an ionosphenc precursor of the Wenchuan earthquake of May 12, 2008. Ionospheric disturbance;Global positioning system （GPS）;Total electron content （TEC）;Wenchuan earthquake;Global ionospheric map （GIM）;COSMIC;f0F2;Crustal Movement Observation;Network of China （CMONOC） 42-1806/P |
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| Snippet | Possible ionospheric disturbances relating to the May 12, 2008, MsS.0 Wenchuan earthquake were identified by Global Positioning System （GPS）-derived total... Possible ionospheric disturbances relating to the May 12, 2008, Ms8.0 Wenchuan earthquake were identified by Global Positioning System (GPS)-derived total... |
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| SubjectTerms | COSMIC Crustal Movement Observation Network of China (CMONOC) f0F2 Global ionospheric map (GIM) Global positioning system (GPS) Ionospheric disturbance Total electron content (TEC) Wenchuan earthquake 全球定位系统 大地震 异常信号 总电子含量 汶川 电子密度分布 电离层扰动 等离子体频率 |
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| Title | Ionospheric total electron content disturbance associated with May 12, 2008, Wenchuan earthquake |
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