【摘要】 一个摆用不同系统记录器的情况下,常常会出现同一震相到时不一致的现象,其差异最大可达0.5秒。为寻求其原因,作者利用江苏大丰井下观测的直接记录系统与768传输记录系统,采用BPM时间服务系统自动授时信号,给摆输入脉冲信号作试验。结果表明,产生到时差异的主要原因在滚筒上。通过试验我们认为,震中定位中的和达直线的离散以及波速异常的测定等,必须考虑滚筒不均匀的因素。更多还原

【Abstract】 Discrepancies as big as 0.5 second in arrival time often occur when use different recorder to record same event phase from same pendulum signal.We try to find the reason by a test.Result of the test shows that the problem is on the recorder drum.Therefore,it is necessary to consider the nonhomogeneity of the drum when Wadali Line deviation of the epicenter emplacement and the anomaly of wave velocity is determined.更多还原