【摘要】 根据海底电缆多波勘探中压力检波器和垂直方向速度检波器产生相同极性的上行波信号和相反极性下行波信号的原理,通过将压力分量数据和垂直分量数据匹配后进行相加合并,可以消除水层鸣震。从理论上分析了速度检波器和压力检波器对上、下行波场以及水层鸣震的响应特点,得到在理想情况下消除水层鸣震的两种数据振幅匹配系数,用该匹配系数对理论模型模拟的两种数据进行相加处理,并在分析实际数据振幅、频率、波形和初至特征的基础上,对实际资料进行了试算,验证了该方法的有效性。更多还原

【Abstract】 Hydrophone and vertically oriented geophone induce upward wave signal with identical polarity and downward wave signal with opposite polarity in OBC seismic prospecting, so the water column reverberation can be eliminated by scaling and summing pressure and velocity seismic data. This paper analyzes theoretically the characteristic of hydrophone and vertically oriented geophone responding to up and downward wave field and water column reverberation, obtains the scale factors of the pressure and velocity data under ideal circumstance and processes the anolog model signal by using the scale factor. On the basis of analyzing the characteristic of the amplitude, frequency, shape and polarity of the field data, this paper also proves the availability of this method by the test of field data.更多还原