Abstract:Ya'an city, located in the mid-southern section of the north-south seismic belt of China, is the site of the intersection of the Longmenshan, Xianshuihe, and Anninghe faults, with a history of strong seismic activity. For decades, research on earthquake monitoring and forecasting in Ya'an city has developed. This work attempts to extract information, showing a relationship between the possible precursory anomalies before an earthquake and the occurrence of an earthquake, from high-precision ground temperature data recorded by the Institute of Geology, China Earthquake Agency. Our study shows that a sudden change in bedrock ground temperature reflects a physical adjustment taking place in the bedrock. This adjustment can be shown in a variety of ways, not only in temperature change, but also in seismic activity. Therefore, we compared the ground temperature data with the seismic activities in the same region through different modalities, and found that there are earthquake cases within a certain range of the measuring points after high-precision ground temperature data changes.
