Analysis thermal anomaly around the time of the Yutian M7.3 earthquake of 12 February 2014 using OLR data

Fengfan Zhao; Ke Sun; Chunli Kang; Feng Jin; Weiyu Ma

doi:10.1117/12.2072160

20 November 2014 Analysis thermal anomaly around the time of the Yutian M7.3 earthquake of 12 February 2014 using OLR data

Fengfan Zhao, Ke Sun, Chunli Kang, Feng Jin, Weiyu Ma

Author Affiliations +

Proceedings Volume 9300, International Symposium on Optoelectronic Technology and Application 2014: Infrared Technology and Applications; 93001I (2014) https://doi.org/10.1117/12.2072160
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

Depending on the China Earthquake Network Center (CENC) measurement, the Yutian M7.3 earthquake struck at 5:19 pm on 12 February 2014. It happened in the Altyn Tagh fault zone. The cycle process of the tidal force of the celestial body for the earthquake was calculated firstly in this paper. From the result, we found that the earthquake occurred at the low point phase. Meantime, the OLR (Outgoing Long-wave Radiation) change was analyzed based on NOAA satellite data around the time of the earthquake in the China area. The preliminary result shows that the OLR have changed with the tide force changing for the earthquake. In temporal, the change went through: Initial OLR rise→strength→reaching abnormal peak→attenuation→return to normal. In detail, the initial indication of anomaly was detected on 9 Feb (3 days before the main shock) and the maximum reaches the value of 11W/m2 northward from the epicenter. And the anomalous area of 10 Feb is closest to the epicenter. There are still many theoretical questions have to be answered. However, OLR have become one of parameters used for precursor studies and the OLR early anomalies appearance of earthquakes.

Citation Download Citation

Fengfan Zhao, Ke Sun, Chunli Kang, Feng Jin, and Weiyu Ma "Analysis thermal anomaly around the time of the Yutian M7.3 earthquake of 12 February 2014 using OLR data", Proc. SPIE 9300, International Symposium on Optoelectronic Technology and Application 2014: Infrared Technology and Applications, 93001I (20 November 2014); https://doi.org/10.1117/12.2072160

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KEYWORDS

Earthquakes

Satellites

Infrared radiation

Signal attenuation

Thermography

Ear

Image enhancement

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