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GI枪不同于常规空气枪,它虽然使子波峰-峰值减少,但是具有较好的压制气泡振荡的优点.现在GI枪已经成为海上地震勘探主要震源激发方式之一.因此研究GI枪子波特性和模拟子波过程就有理论与现实意义.GI枪震源子波模型是依据GI枪激发特性,基于空气枪震源子波模型理论,以准静态开放式热力学系统与气泡振荡方程为依托建立的.模型根据模拟经验参数模拟震源子波结果,并与GI枪实测子波资料进行了对比,模拟结果表明能较好的吻合.文中同时给出子波模拟经验参数,使模型标准化.
Unlike traditional air guns, GI guns have the advantage of suppressing bubble oscillation, although they reduce the peak-to-peak sub peaks, and GI guns have now become one of the major sources of seismic exploration in offshore waters. And simulating the wavelet process have theoretical and practical significance.GI gun source wavelet model is based on the GI gun excitation characteristics, based on the air gun source wavelet model theory, based on quasi-static open thermodynamic system and bubble oscillation equation as the basis. The model simulates the source wavelet results according to the simulated empirical parameters and compares them with the measured data of the GI gun, and the simulation results show that they can be well matched. The empirical parameters of wavelet simulation are also given to standardize the model.