EXTRACTION OF SURFACE TEMPERATURE ANOMALY FROM WUSHI MS7.1 EARTHQUAKE BASED ON RST ALGORITHM
In order to explore the applicability of RST algorithm in the extraction of seismic thermal infrared anomalies in Xinjiang region,the MODIS land surface temperature data set of Wushi MS7.1 earthquake was constructed,and after removing the pixel-by-pixel time series trend of the data set,RST algorithm was used to extract the surface temperature anomaly information of Wushi MS7.1 earthquake.The results show that the change process of surface temperature anomaly in Wushi MS7.1 earthquake can be divided into six stages:emergence-disappearance-reappearance-expansion-maximum-disappearance;The abnormal area of surface temperature of Wushi MS7.1 earthquake is distributed along the strike of tectonic zone.Wushi MS7.1 earthquake occurred 99 days after the maximum surface temperature anomaly.It is feasible to extract seismic thermal infrared anomaly by combining MODIS data with RST algorithm in relevant research of Xinjiang region.
Wushi MS7.1 earthquakeSurface temperature anomalyTime series trend removalRST algorithm
NETL
NSTL
万方数据
