| 摘要 |
Certain types of coherent noise on seismic records made from a plurality of seismic disturbances in the same local area, is eliminated by reversing the polarity of the signals to be recorded on alternate recordings, or on half of the total number of recordings. The recorded signals are reproduced and summed with the polarity of half of the reproduced signals again reversed so that reflection events are in time-phase. Coherent noise originating within the recorder will be of opposite time-phase and will not appear on the summed record.
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