图9  茫崖6.1级地震前M_L≥3.0地震震中分布图

（1982.1.1～1987.1.1，35°00′～40°00′N，90°00′～96°00′E）

Fig.9  Epicentral distribution of the M_L≥3.0 earthquakes before

       the M_S6.1 Mangya earthquake