图16 云南及邻区地震年频度变化与地震的关系
Fig.16 Relation between the variation of yearly seismic
frequency and the earthquake
范围:北纬21—29°,东经102—106°;
(a) M≥5.0级地震年频度;
(b) M=4.0—4.9级地震年频度;
(c) M=3.5—5.9级地震12月累计逐月滑动频度