Abstract A series of earthquakes (the Xianyou ML5.0 Earthquakes series,totally 73 events), recorded by digital seismic network of Fujian province, are selected to calculate the apparent stress in this region. The paper gives the time distribution and the area of the apparent stress level. The features of apparent stress change before and after the main shock are discussed. Finally, the relation between apparent stress, magnitude and hypocenter depth is obtained.
