高采样率下不同供电方式对地震波形记录影响的对比分析

Comparison of The Influence of Different Power Supply Modes on Seismic Waveform Records under High Sampling Rate

目前,测震台站设备的供电组合方式多种多样,采样率在不断提高,同时也混杂进了一些干扰信号。文章论述了使用同一套测震设备,在高采样率下不同供电方式对地震波形的记录影响情况。试验表明,供电方式和屏蔽措施的改变可以有效地减少由供电设备输出耦合到仪器记录中的干扰信号。

Power Supply modes of equipment at seismic station are in varied forms and the sampling rate continues to increase .It also introduces some other interferences .The influences of different power supply modes on seismic waveform records by using the same set of seismic equipment under high sampling rate are discussed .The test shows that the change of power supply modes and shiel‐ding measures can effectively reduce the output coupled interference signal from the power supply devices .