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文章对使用不同类型仪器的观测数据,用方位角法进行单台震中测定的问题进行了讨论.指出用短周期仪器测定近震效果较好,而对于远震则应主要依靠763型长周期地震仪.由于763仪器改善了P波的影区记录,其观测资料的应用,在一定程度上提高了单台定位能力.文章还以观测事实例举了P_2在定位中的应用,并就P_2的识别提出了看法.
In this paper, the problems of single epicenter measurement using azimuth method are discussed in the observation data of different types of instruments, and the short range instruments are used to determine the effect of near earthquakes, while the long-distance epicenters should rely mainly on the long-period type 763 earthquake Because of the improvement of P-wave shadow record by 763 instrument and the application of its observation data, it improves the single positioning ability to a certain degree.The paper also illustrates the application of P 2 in the observation by observation fact, Identification made the view.