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1986年8月12日18时45分,四川省凉山彝族自治州盐源县发生M_S=5.4级地震。微观震中为北纬27°25′00″,东经101°25′41″;宏观震中在盐源县城西约8千米的梅雨乡虾耙沟一带。宏、微观震中相距1.8千米。震源深度15千米。震源机制解节面Ⅱ走向南73°东,倾向北北东,倾角75°。震中区烈度为Ⅶ度,面积约19平方千米,长轴方向南东东-北西西,长短轴
At 18:45 on August 12, 1986, an M_S = 5.4 earthquake occurred in Yanyuan County, Liangshan Yi Autonomous Prefecture, Sichuan Province. The microtext epicenter is 27 ° 25’00 “north latitude and 101 ° 25’41” east longitude. The epicenter of the macro epicenter is shrimp rake trench in Meiyu Township about 8 km west of Yanyuan County. Macro, micro epicenter 1.8 km apart. The focal depth of 15 km. Focal mechanism solution section II to the south 73 ° east, north-east tend to tilt 75 °. The epicenter area intensity of Ⅶ degrees, an area of about 19 square kilometers, the long axis of the direction of the South East - North West, the short axis