An investigation of brightness temperature anomalies before medium-strong earthquakes

Yaru Wang; Fucheng Song

doi:10.1117/12.3010363

15 November 2023 An investigation of brightness temperature anomalies before medium-strong earthquakes

Yaru Wang, Fucheng Song

Proceedings Volume 12815, International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023); 1281525 (2023) https://doi.org/10.1117/12.3010363
Event: International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023), 2023, Kaifeng, China

Abstract

The satellite thermal infrared thermal radiation anomaly caused by seismic activity has become a promising technical means in the field of seismic research. The surface temperature condition used to extract the pre-earthquake brightness temperature anomaly can be obtained from the thermal infrared remote sensing data through ground heating, which provides a good data basis for the research. Based on the data of the Fengyun-2 satellite, the background field of thermal infrared brightness temperature and the simultaneous offset index values of four earthquakes were constructed and analyzed in Xinjiang and Qinghai provinces, and the spatial and temporal distribution characteristics of abnormal brightness temperature were revealed. The results show that there is usually obvious warming before earthquakes and at least once. In space, the abnormal area in Xinjiang is roughly fine strip and the abnormal area in Qinghai Province is massive. The larger the earthquake magnitude, the more obvious the change in brightness temperature.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yaru Wang and Fucheng Song "An investigation of brightness temperature anomalies before medium-strong earthquakes", Proc. SPIE 12815, International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023), 1281525 (15 November 2023); https://doi.org/10.1117/12.3010363

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KEYWORDS

Earthquakes

Infrared radiation

Thermography

Infrared imaging

Satellites

Temperature metrology

Remote sensing

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