Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study
Focusing on major earthquakes (EQs; MS ≥ 7) in Western China, this study primarily analyzes the fluctuation in Atmospheric Chemical Potential (ACP) before and after the Wenchuan, Yushu, Lushan, Jiuzhaigou, and Maduo EQs via Climatological Analysis of Seismic Precursors Identification (CAPRI). The di...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2072-4292/17/2/311 |
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| author | Qijun Jiao Qinqin Liu Changgui Lin Feng Jing Jiajun Li Yuxiang Tian Zhenxia Zhang Xuhui Shen |
| author_facet | Qijun Jiao Qinqin Liu Changgui Lin Feng Jing Jiajun Li Yuxiang Tian Zhenxia Zhang Xuhui Shen |
| author_sort | Qijun Jiao |
| collection | DOAJ |
| description | Focusing on major earthquakes (EQs; MS ≥ 7) in Western China, this study primarily analyzes the fluctuation in Atmospheric Chemical Potential (ACP) before and after the Wenchuan, Yushu, Lushan, Jiuzhaigou, and Maduo EQs via Climatological Analysis of Seismic Precursors Identification (CAPRI). The distribution of vertical ACP revealed distinct altitude-dependent characteristics. The ACP at lower atmospheric layers (100–2000 m) exhibited a high correlation, and this correlation decreased with increasing altitude. Anomalies were detected within one month prior to each of the five EQs studied, with the majority occurring 14 to 30 days before the events, followed by a few additional anomalies. The spatial distribution of anomalies is consistent with the distribution of fault zones, with noticeable fluctuation in surrounding areas. The ACP at an altitude of 200 m gave a balance between sensitivity to seismic signals and minimal surface interference and proved to be optimal for EQ monitoring in Western China. The results offer a significant reference for remote sensing studies related to EQ monitoring and the Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) model, thereby advancing our understanding of pre-seismic atmospheric variations in Western China. |
| format | Article |
| id | doaj-art-9144c6181b5c43c78dd78c8df1a806a6 |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-9144c6181b5c43c78dd78c8df1a806a62025-01-24T13:48:05ZengMDPI AGRemote Sensing2072-42922025-01-0117231110.3390/rs17020311Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case StudyQijun Jiao0Qinqin Liu1Changgui Lin2Feng Jing3Jiajun Li4Yuxiang Tian5Zhenxia Zhang6Xuhui Shen7National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microwave Remote Sensing Technology, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, ChinaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, ChinaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, ChinaFocusing on major earthquakes (EQs; MS ≥ 7) in Western China, this study primarily analyzes the fluctuation in Atmospheric Chemical Potential (ACP) before and after the Wenchuan, Yushu, Lushan, Jiuzhaigou, and Maduo EQs via Climatological Analysis of Seismic Precursors Identification (CAPRI). The distribution of vertical ACP revealed distinct altitude-dependent characteristics. The ACP at lower atmospheric layers (100–2000 m) exhibited a high correlation, and this correlation decreased with increasing altitude. Anomalies were detected within one month prior to each of the five EQs studied, with the majority occurring 14 to 30 days before the events, followed by a few additional anomalies. The spatial distribution of anomalies is consistent with the distribution of fault zones, with noticeable fluctuation in surrounding areas. The ACP at an altitude of 200 m gave a balance between sensitivity to seismic signals and minimal surface interference and proved to be optimal for EQ monitoring in Western China. The results offer a significant reference for remote sensing studies related to EQ monitoring and the Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) model, thereby advancing our understanding of pre-seismic atmospheric variations in Western China.https://www.mdpi.com/2072-4292/17/2/311earthquakeseismic precursorCAPRI algorithmatmospheric chemical potentialtemperaturerelative humidity |
| spellingShingle | Qijun Jiao Qinqin Liu Changgui Lin Feng Jing Jiajun Li Yuxiang Tian Zhenxia Zhang Xuhui Shen Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study Remote Sensing earthquake seismic precursor CAPRI algorithm atmospheric chemical potential temperature relative humidity |
| title | Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study |
| title_full | Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study |
| title_fullStr | Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study |
| title_full_unstemmed | Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study |
| title_short | Spatiotemporal Analysis of Atmospheric Chemical Potential Anomalies Associated with Major Seismic Events (Ms ≥ 7) in Western China: A Multi-Case Study |
| title_sort | spatiotemporal analysis of atmospheric chemical potential anomalies associated with major seismic events ms ≥ 7 in western china a multi case study |
| topic | earthquake seismic precursor CAPRI algorithm atmospheric chemical potential temperature relative humidity |
| url | https://www.mdpi.com/2072-4292/17/2/311 |
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