几种非炸药震源的物理过程及其特性分析

ANALYSIS OF THE PHYSICAL PROCESS AND ITS CHARACTERISTIC OF SOME TYPES OF NON-EXPLOSIVE SOURCE

中国科学院电工研究所

在海洋地震勘探中,有三种常用的非炸药震源,即电火花震源、空气枪震源和蒸气枪震源。这些震源已成功地应用于海洋石油勘探和海洋地质调查。本文着重描述这三种震源的物理过程、声信号的产生及其特性、震源频谱等。这三种震源各有其特点,可以根据不同的勘探目的选用。

There are three types of non-explosive sources commonly used in marine seismic exploration, namely, the electric sparks, air gun and steam gun which are successfully adopted for marine oil exploration and geological survey. The physical process, formation of acoustic signal and their characteristics and frequency spectrum of seismic source are discussed. They have their own specific features and are suitable for different purpose of exploration.