Probable satellite thermal infrared anomaly before the Zhangbei M s=6.2 earthquake on January 10, 1998 |
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| Authors: | QI-QI L JIAN-HAI DING CHENG-YU CUI |
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| Institution: | 1. Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China
2. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | This paper used the thermal infrared data of the satellite NOAA-AAVHRR of the north part of North China (113°–119°E, 38°–42°N),
and processed the remote sensing data through radiation adjustment, geometric adjustment and so on by the software “The Monitoring
and Fast Process System of Earthquake Precursor Thermal Infrared Anomaly”, inversed the earth surface temperature. Some disturbances
effect had been excluded, and thermal infrared temperature anomaly had been extracted by the picture difference method. The
Zhangbei M
s=6.2 earthquake is used as the example in the paper, so that in the paper thermal infrared characteristics on time-space before
earthquake and the relationship between the anomaly and the earthquake prediction have been summarized.
Within more than ten days before the Zhangbei earthquake, the thermal infrared anomaly had emerged widely along Zhangjiakou-Bohai
seismic belt, and the anomalous region seemed like a belt and it is also consistent with the tectonic background there; the
anomaly expanded from the outside toward the earthquake focus, but the focus lay at the edge of the thermal infrared region.
So it is possible to explore a new anomaly observation method for earthquake prediction by observing and studying the satellite
thermal infrared anomaly before big earthquakes happen.
This paper is a part result of the Project (Y95-10) supported by China National Defense Industry Committee of Science and
Technology. |
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| Keywords: | thermal infrared anomaly precursor of imminent earthquake Zhangbei earthquake |
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