【摘要】 利用ＥＳＭＩ电磁干扰接收机和由多频天线与ＳＲ－５０Ｃ磁带机组成的记录系统，在不同距离观测到矿山爆破中的电磁辐射信号，不仅记录到与地震波同时出现的电磁辐射，还记录到大量震后电磁辐射信号．讨论了所得结果的性质及在地震预报中的意义．更多还原

【Abstract】 Electromagnetic emissions have been detected during quarry blasting, by using anESMI electromagnetic interference receiver and a high quality tape recorder withmultifrequency antennas placed at the horizontal distance of 20m, 80m, and 100mfrom the shot point respectively. Both the EM signals and seismological wave wereobserved simultaneously by the tape recorder system during the blasts, and a largenumber of EM emissions were also recorded after the blasts. It has been discussedthat the properties of the results with their significance in seismology.更多还原