论文详情
随着多分量检波器和地震仪的广泛应用,针对地球壳幔结构成像、岩土工程探测、石油勘探等领域的多分量面波研究逐渐受到关注。在系统研究面波理论及相关方法技术的基础上,对多分量面波的研究现状进行了总结。首先简要介绍了面波相速度频散计算方法,列举了面波多模式频散曲线提取遇到的问题及相应的解决方法;然后重点介绍了多分量面波频散特征、偏振特征及多分量面波资料的处理和反演方法;接着介绍了旋转分量在面波分离和面波频散分析等方面的应用,最后讨论了多分量面波在石油勘探中的应用前景。不同分量的面波中包含了不同的速度频散信息,因此多分量面波反演有助于获得更准确的近地表速度结构,六分量观测能够更完备地刻画多分量面波频散及偏振特征,有助于识别和分离面波。目前多分量面波技术的研究在国内尚处于起步阶段,基于多分量面波频散及偏振等特征研发相应的面波处理和压制技术将是今后主要的研究方向之一。
There has been widespread interest in multi-component surface-wave surveys in areas such as crustal and mantle research,engineering prospecting,and oil exploration.This study reviews the developments in multi-component surface waves,beginning with the computation methods of theoretical dispersion curves.Subsequently,the challenges associated with the extraction of multi-mode dispersion curves of vertical-component surface waves and their solutions are discussed.The dispersion characteristics,polarization characteristics,multi-component processing,and the inversion methods of multi-component surface-wave were also reviewed in detail,followed by the applications of rotational motion for surface-wave separation and dispersion analysis.Finally,the application prospects of multi-component surface waves in oil exploration were analyzed.It was found that more accurate dispersion curves may be obtained using multi-component surface waves,resulting in S-wave velocities of greater accuracy.Six-component surface-wave studies were found to be useful to learn the dispersion and polarization characteristics of surface waves.Six-component seismic data may also be utilized to separate surface waves from reflections.Multi-component surface wave methods continue to be developed in China.Future research will involve investigating new methods for surface-wave utilization and suppression,based on the multi-component surface-wave dispersion and polarization characteristics.
国家自然科学基金项目(U1839208,41425017)资助。