强震仪器常用授时方式的优缺点及应用——以ETNA2为例

ADVANTAGES AND DISADVANTAGES OF COMMON TIME-SERVICE MODES OF STRONG MOTION INSTRUMENTS AND THEIR APPLICATIONS: Taking ETNA2 AS AN EXAMPLE

地震观测仪器的计时单元是地震观测仪器不可或缺的组成部分,以强震动观测授时为例,将常用强震动观测仪器计时单元进行简要介绍,并对5种授时方式的原理及优缺点进行分析,根据强震动观测组网方式和布设条件的差异,采取不同的授时方式,以求在条件允许的范围内,为强震观测提供更佳的时间服务。

Timing unit of seismic observation instrument is an indispensable part of seismic observation instrument.Taking strong motion observation timing as an example,this paper briefly introduces the commonly used time unit of strong motion observation instrument,and analyses the principle advantages and disadvantages of five kinds of time-giving methods.According to different networking modes and laying conditions of strong motion observation,different time-giving modes are adopted in order to make conditions permit.Within the scope,it can provide better time service for strong earthquake observation.