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一、灵武5.6级地震的基本参数 1984年11月23日,在宁夏灵武县境内的同一地点发生了两次地震。由于宁夏境内绝大部分微震仪记录振幅出格,所以我们采用半几何法求得了震中位置和发震时间,并用和达法求得震源深度。用银川基准台的DK—1和513型仪器记录,并参照微振仪记录振幅出格后测定震级的几种方法求得震级M_L。由于两次地震的(?)波到时只差5.6秒,故只能给出第一次地震的震源机制解。各参
I. Basic parameters of Lingwu 5.6 earthquake On November 23, 1984, two earthquakes occurred in the same place in Lingwu County of Ningxia. Due to the fact that the amplitude of most microseismographs recorded in Ningxia is quite special, we use the semi-geometric method to find the location of the epicenter and the time of occurrence of the epicenter, and obtain the depth of the epicenter by the sum-up method. Using Yinchuan datum Taiwan DK-1 and 513 type instrument records, and with reference to the micro-vibration instrument records the amplitude of several methods to determine the magnitude after the magnitude M_L. Because of the two earthquakes (wave) only lag 5.6 seconds, so only the first earthquake focal mechanism solution is given. Each reference