海底地震观测系统设计方法研究

Study on layout design methods of ocean bottom seismic

海底地震仪(OBS)可以获取纵波、转换横波等多种有效的地震波信息。丰富的多波勘探信息对于弄清水合物内部速度结构、提高地层的分辨率具有重要意义。海底地震观测系统设计的主要研究目的是为海底地震数据采集提供最佳的海底地震仪分布形态、分布间距等观测系统参数。本文中结合国外OBS在天然气水合物中的应用成果,采用射线追踪法,实现了海底地震观测系统设计,取得了较好的应用效果。

Ocean bottom seismometer（OBS） can acquire various seismic information of P-wave and convetted S-wave, which are vital to revel the velocity structure and to enhance resolution of strata bearing gas hydrate. The parameters of distributional pattern and space of OBS are the focus in geometry design. Based on the application of OBS acquisition on the gas hydrate at abroad, the method of ray tracing was introduced to the layout design of OBS in the paper, with a preferable effect.