Multiple geophysical observation response to the Tianjian explosion in Beijing-Tianjin-Hebei region

The surface explosion occurred in Tanggu distrct of Tianjin on Augusr 12,2015 caused wide attention .This paper presented the geophysical observation response ti this explosion based on the data form a number of geophysical observation stations in Beijing-Tianjin-Hebei region as well as the satellite infrared remote the point.the resulte showed that the response of georesis-tivity to the explosion near the event site is apparent.that is,the georesistivity curve declined rapidly after this event and lasted for a long time,It was also observed that the geoelectric field anomalies appeared with a small amplitude two days and after the event,and the space electronic flow declined slightly synchronously,however,no disturbance of geomagnetic field appeared at the same period.Meanwhile,the satellite in frared brghtness temperature significantly increased after the event,and lasted for several days.In addition,there was no obvious response of enderground water level and deformation to the event,The resultsindicate that different types of observations have different responses to this event,it will be valuable for analyzing and determing the anomalies related to earthquake in the future,What is more,it is also useful for a deeper cognition for the precess of Tianjin explosion.