图22　滇西南地区7级地震前中强震空间分布图

       1. 4.7～4.9; 2. 5.0～5.9; 3. 7.0～7.9; 4.1982.2.20～1983.5.28;

       5. 1994.9.19～1995.5.12

Fig.22  Distribution of M_S≥4.7 earthquakes in southwestern Yunnan area before

        the M_S≥7.0 earthquakes