英国境内的地震活动性是比较低的,这必然意味着定量确定地震危险性是困难的。除此困难以外,还必须设计一张图,不仅能预报地震的发生,而且还能够预测与地震发生有关的地面运动有感程度。这里说明的设计图是将适 The seismicity in the UK is relatively low, which necessarily means that it is difficult to quantitatively determine the seismic risk. In addition to this difficulty, it is also necessary to devise a map that not only predicts the occurrence of earthquakes, but also predicts the degree of ground movement associated with the earthquake. The design illustrated here is suitable