Pre-seismic anomaly analysis of the Turkey earthquakes on 6 February 2023 based on multi-source satellite observations

Jiang Liu (), Xuemin Zhang, Muping Yang, Yang Yang, Fuxiu He, Lian Xue, Xianliang Yao, Xianhe Yang, Weiwei Wu and Guilan Qiu
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Jiang Liu: Sichuan Earthquake Agency
Xuemin Zhang: China Earthquake Administration
Muping Yang: Liaoning Earthquake Agency
Yang Yang: Sichuan Earthquake Agency
Fuxiu He: Sichuan Earthquake Agency
Lian Xue: Sichuan Earthquake Agency
Xianliang Yao: Sichuan Earthquake Agency
Xianhe Yang: Sichuan Earthquake Agency
Weiwei Wu: Sichuan Earthquake Agency
Guilan Qiu: Sichuan Earthquake Agency

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2024, vol. 120, issue 13, No 39, 12513 pages

Abstract: Abstract On 6 February 2023, the destructive earthquakes (EQs) occurred in Kahramanmaras Turkey with the maximum magnitude 7.8. In this paper, based on multi-source satellite observations, we investigated the pre-seismic anomalies of infrared radiation and ionosphere, and analyzed the coupling features of multi-parameter anomalies in temporal evolution and spatial distribution. Analysis results indicated that in the vicinity of the epicenter, the outgoing longwave radiation (OLR) anomalies observed from NOAA-18 satellite were very obvious in January 2023, and the ionospheric plasma anomalies observed from CSES and SWARM satellites were significantly detected on 30 January 2023, which were probably the precursor signals of the impending main shock. Combined with the analysis results of crustal deformation and atmospheric compositions for the Turkey EQs in published articles, we believed that crustal stress changes and rock ruptures in the boundaries between the Arabian and African plates and the Anatolian block were more likely to cause the pre-seismic anomalies in infrared radiation, atmosphere and ionosphere. The observed anomalies had a clear coupling relationship, and represented the stage changes of seismogenic process for the Turkey EQs. In addition, the satellite remote sensing technology is very helpful for us to monitor the multi-parameter variations in lithosphere, atmosphere and ionosphere, better verify the correlation of pre-seismic anomalies in Earth’s multi-sphere structures, and further promote the research on the multi-sphere anomaly coupling mechanism.

Keywords: 2023; Turkey earthquakes; Infrared radiation; Ionosphere; Multi-sphere coupling (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11069-024-06694-y

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