Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations
This research examines the correlation between seismic activity and variations in ionospheric electron density (Ne) using the data from the Langmuir probe (LAP) onboard the China Seismo-Electromagnetic Satellite (CSES) during nighttime. Statistical analysis of Ms ≥ 6.8 earthquakes that occurred glob...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-06-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/15/13/3354 |
| _version_ | 1827734562625552384 |
|---|---|
| author | Chengcheng Han Rui Yan Dedalo Marchetti Weixing Pu Zeren Zhima Dapeng Liu Song Xu Hengxin Lu Na Zhou |
| author_facet | Chengcheng Han Rui Yan Dedalo Marchetti Weixing Pu Zeren Zhima Dapeng Liu Song Xu Hengxin Lu Na Zhou |
| author_sort | Chengcheng Han |
| collection | DOAJ |
| description | This research examines the correlation between seismic activity and variations in ionospheric electron density (Ne) using the data from the Langmuir probe (LAP) onboard the China Seismo-Electromagnetic Satellite (CSES) during nighttime. Statistical analysis of Ms ≥ 6.8 earthquakes that occurred globally between August 2018 and March 2023 is conducted, as well as Ms ≥ 6.0 earthquakes in China during the same period, using the quartile analysis method for fixed revisiting orbits. The main conclusions are that: (1) the larger the magnitude of the earthquake, the more anomalous the phenomena that appear; (2) the anomalies on the east side of the epicenter are significantly higher than those on the west side, and the anomalies in the Northern Hemisphere are mostly distributed southward from the epicenter, while those in the Southern Hemisphere are mostly distributed northward from the epicenter; (3) anomalies appear with a higher frequency on several specific time intervals, including the day of the earthquake (likely co-seismic effect) and 2, 7, and 11 days before the earthquake (possible precursor candidates); and (4) for the 15 earthquakes of Ms ≥ 6.0 in China over the past five years, anomalous Ne mainly occurred southwest of the epicenter, with the highest frequency observed 5 days before the earthquake, and there were continuous anomalous phenomena between 9 days and 5 days before the earthquake. This study concludes that Ne, measured by CSES, can play a fundamental role in studying earthquake-related ionospheric disturbances. |
| first_indexed | 2024-03-11T01:30:20Z |
| format | Article |
| id | doaj.art-6cd3ee6cfe824394ba9250131c2be376 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T01:30:20Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-6cd3ee6cfe824394ba9250131c2be3762023-11-18T17:25:00ZengMDPI AGRemote Sensing2072-42922023-06-011513335410.3390/rs15133354Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES ObservationsChengcheng Han0Rui Yan1Dedalo Marchetti2Weixing Pu3Zeren Zhima4Dapeng Liu5Song Xu6Hengxin Lu7Na Zhou8National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaCollege of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaThis research examines the correlation between seismic activity and variations in ionospheric electron density (Ne) using the data from the Langmuir probe (LAP) onboard the China Seismo-Electromagnetic Satellite (CSES) during nighttime. Statistical analysis of Ms ≥ 6.8 earthquakes that occurred globally between August 2018 and March 2023 is conducted, as well as Ms ≥ 6.0 earthquakes in China during the same period, using the quartile analysis method for fixed revisiting orbits. The main conclusions are that: (1) the larger the magnitude of the earthquake, the more anomalous the phenomena that appear; (2) the anomalies on the east side of the epicenter are significantly higher than those on the west side, and the anomalies in the Northern Hemisphere are mostly distributed southward from the epicenter, while those in the Southern Hemisphere are mostly distributed northward from the epicenter; (3) anomalies appear with a higher frequency on several specific time intervals, including the day of the earthquake (likely co-seismic effect) and 2, 7, and 11 days before the earthquake (possible precursor candidates); and (4) for the 15 earthquakes of Ms ≥ 6.0 in China over the past five years, anomalous Ne mainly occurred southwest of the epicenter, with the highest frequency observed 5 days before the earthquake, and there were continuous anomalous phenomena between 9 days and 5 days before the earthquake. This study concludes that Ne, measured by CSES, can play a fundamental role in studying earthquake-related ionospheric disturbances.https://www.mdpi.com/2072-4292/15/13/3354CSESelectron densityearthquakeseismic anomaly |
| spellingShingle | Chengcheng Han Rui Yan Dedalo Marchetti Weixing Pu Zeren Zhima Dapeng Liu Song Xu Hengxin Lu Na Zhou Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations Remote Sensing CSES electron density earthquake seismic anomaly |
| title | Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations |
| title_full | Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations |
| title_fullStr | Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations |
| title_full_unstemmed | Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations |
| title_short | Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations |
| title_sort | study on electron density anomalies possibly related to earthquakes based on cses observations |
| topic | CSES electron density earthquake seismic anomaly |
| url | https://www.mdpi.com/2072-4292/15/13/3354 |
| work_keys_str_mv | AT chengchenghan studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT ruiyan studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT dedalomarchetti studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT weixingpu studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT zerenzhima studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT dapengliu studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT songxu studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT hengxinlu studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations AT nazhou studyonelectrondensityanomaliespossiblyrelatedtoearthquakesbasedoncsesobservations |