【摘要】 本文根据邢台、海城、唐山３大地震序列每年最大震级资料，展示了３者的起伏特点及其在给定时间计算新一年度最大震级的办法，同时也探讨了超限值与大区强震发生时间的随属关系及其对中期大形势预报的意义更多还原

【Abstract】 The paper brought to light the fluctuation features of the 3 sequences and the method calculating maximum magnitude in a new year on the basis of the data of the annual maximum magnitude in the sequences of the Xingtai,the Haicheng and the Tangshan Earthquake,discussed the subordinate relationship between the overlimited value and the origin time of strong earthquake in large area and the significance for the mediumterm prediction.更多还原