对数字地震仪B格式记录中两个间隙时间的分析

EXAMINATION OF TMO GAPS OF DIGITAL SEISMIC RECORDER WHILST RECORDING IN SEG-B FORMAT

地质矿产部第四物探大队

在产少关于SN338和国产DSC—481A、B的参考资料中都可见到对B格式所作的具体时间规定,如:PE=150ms,GEM=250ms,GMFE=20ms,…,GFC=150ms等等。倘若仔细对照一下仪器内部线路和有关逻辑方程就可发现,上述时间规定中,有两个间隙段的时间规定是欠妥的,这两个间隙段就是GEM和GFC段。

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