图14  唐山地震序列余震震中分布图(1976.7.28-1979.12.31)^［1］

Fig.14  Epicenter distribution of aftershocks of the Tangshan earthquake sequence         (1976.7.28-1979.12.31)

在用虚线标示的余震密集区内,只标出M≥3.0级地震的震中