INVESTIGATION ON MONITORING SITES OF CRUSTAL DEFORMATION IN SHANXI SEISMIC BELT

In this paper, several kind of crust deformation monitoring sites including mobile short leveling site across faults, station leveling sites and the regional mobile GPS monitoring sites in Shanxi seismic belt are investigated, analyzed and summarized.Most of the monitoring data in Shanxi including from 10 mobile short leveling sites and 4 station leveling sites have shown the general features of Shanxi seismic belt:most of the faults' strikes are NNE to NE, and with the active way of normal right-lateral strike slip.Besides, these faults and few other faults with direction of near east-west or north-west are cut each other where is the place likely to cause stress concentration.There are 40 regional GPS spots in Shanxi seismic belt, and 39 spots are observed once a year.The distance between two adjacent spots is from a few kilometers to dozens of kilometers, and they are well distributed on the fault zone.Re-monitoring data from these spots have been accumulated more than ten years.From study on the feature of historic seismicity and the geological data, it's considered that strong earthquake will come again more possibly in Shanxi belt.Thus information about different kinds of crust deformation monitoring sits, the relationship between the sites in time and space, and the accumulation of years monitoring data are all important for researches on earthquake prediction.