Abstract: The airgun hypocenters, as a type of nonpollution equipment, emit shocking waves for ocean exploration. One of key for designing an airgun hypocenter is how to optimize the characters of shock wave. A novel airgun hypocenter is studied, in which the basic parameters of airgun hypocenter and two different combinations are discussed. Based on analyzing the mechanism of underwater subsidiary wave of airgun hypocenter, six dominant design parameters are found out, they greatly determine the feature of subsidiary wave. The characters of single airgun at different air pressure and submergence depths are investigated by simulation, from which some theoretical supporting for optimal combination of airgun hypocenter can be obtained.

Key words: vibration and wave, airgun hypocenter, ocean explore, underwater subsidiary wave

摘要： 气枪震源是一种海洋探测的无污染新型装备，用以产生冲击子波,气枪震源技术的关键是如何控制子波的特性,使之适合石油勘探作业。研究一种气枪震源的激发原理及基本参数，探讨气枪震源的两种组合形式的特点，同时分析影响气枪震源组合特性的基本参数及子波特性产生机理，获得影响水下气枪组合震源子波特性的六个主要的基本参数，并对单气枪在不同气压和不同沉放深度下做了仿真计算，为优化组合震源提供理论依据。

关键词: 振动与波, 气枪震源, 海洋勘探, 水下子波