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Analysis of thermospheric characteristic anomalies from 2021 Mw 7.5 Peru earthquake

Xu, Xitong; Chen, Shengbo; Wang, Lei. 2024 Analysis of thermospheric characteristic anomalies from 2021 Mw 7.5 Peru earthquake. In: Fifth International Conference on Geoscience and Remote Sensing Mapping (ICGRSM 2023), Lianyungang, China, 2023. SPIE, 1298006.

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Abstract/Summary

This study investigates the relationship between seismic activity and thermospheric anomalies related to the 2021Mw7.5 Peru earthquake. Utilizing data from the National Center Environmental Prediction (NCEP) reanalysis and the Ionospheric Connection Explorer (ICON) satellite with the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI), temperature and vector wind anomalies were analyzed. Seismic thermal anomalies in the lower atmosphere were found to precede significant temperature fluctuations in the thermosphere, displaying a bottom-up propagation pattern. Additionally, vector wind analysis revealed a strengthening radial component originating from the epicenter, indicating energy propagation from the earthquake source. The observed vertical perturbations and horizontal disturbances in the thermosphere provide evidence of the link between seismic activity and thermospheric disturbances, advancing our understanding of the mechanisms underlying Lithosphere Atmosphere-Ionosphere Coupling (LAIC). These findings contribute to LAIC research and provide valuable insights into the processes involved in seismic-related ionospheric disturbances.

Item Type: Publication - Conference Item (Paper)
Digital Object Identifier (DOI): https://doi.org/10.1117/12.3020888
Date made live: 26 Mar 2024 11:43 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/537169

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