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本文对沿着红河断裂带及其以北地区,滇西北——滇南约10万平方公里范围内,通过对24个地震台所记录的9次(M=3.4—5.5)地震震相分析研究所作的 P_n 波相遇时距曲线和地壳结构轮廓,初步得到:V(?)=5.8公里/秒,V_(pn)=8.2公里/秒;对滇西北(丽江——剑川)地区,由五个地震资料得到的地壳厚度 H=54公里;对滇南(峨山、建水、红河和蒙自)地区的4次地震资料得 H=44公里。M——面的倾角(?)=1.5度。震中距在Δ=150—260公里范围内的初至 P 波速度滇西北为 V_(p1)=6.0±0.1公里/秒,滇南为 V_(p1)=6.8±0.1公里/秒。
Based on the analysis of the facies analysis of 9 earthquakes (M = 3.4-5.5) recorded by 24 seismostation stations along the Red River fault zone and its north area, northwestern Yunnan and southern Yunnan about 100,000 km2, (Pn) = 8.2 km / s; for the northwest Yunnan (Lijiang - Jianchuan) region, the total number of the P_n wave encounters the time curve and the crustal structure contour is V = 5.8 km / The crustal thickness obtained from the seismic data is H = 54 km; H = 44 km for the four seismic data in the areas of southern Yunnan (Eishan, Jianshui, Honghe and Mengzi). M - surface inclination (?) = 1.5 degrees. The first-arrival P-wave velocity in the range of Δ = 150-260 km was V_ (p1) = 6.0 ± 0.1 km / s in northwestern Yunnan and V_ (p1) = 6.8 ± 0.1 km / s in southern Yunnan.