图2 宁蒗5.5级地震区域断裂构造及历史地震震中分布图(据文献[1])
①剑川-丽江-木里断裂带;②永胜-程海断裂带;
③箐河-程海断裂带;④宁蒗-程海断裂带
Fig.2 Map of regional fault structure and epicentral
distribution of historical earthquakes around
the MS5.5 Ninglang epicentral area