摘要
用瞬态多道瑞利波法,对夏垫隐伏断裂附近的浅层速度结构进行了调查研究,利用f-k域分析方法提取瑞利波频散曲线,分别用遗传算法和半波长方法反演,得到断裂附近的横波速度结构和瑞利波相速度分布剖面。反演结果与钻孔资料的对比表明,瞬态瑞利波法对于探测上断点埋深较浅的隐伏断裂是有效和可靠的。
In the paper, the near-surface velocity structure detection of Xiadian buried fault with transient multi-channel surface wave （MASW） is presented. With an f-k domain transformation, the dispersion curve is derived. Then, the S-wave velocity structure and Rayleigh wave phase velocity profile are inversed with genetic algorithm and half-wave length method, respectively. The contrast between the inversed result and the borehole data indicates that in detection of buried faults, which the break point is not much deeper, the transient MASW is effective and reliable.
出处
《地震地磁观测与研究》
2008年第1期15-19,共5页
Seismological and Geomagnetic Observation and Research
基金
地震科学联合基金资助(A07037)
中国地震局地球物理研究所论著编号:08AC2003
关键词
瞬态多道瑞利波
频散
速度结构
隐伏断裂
transient multi-channel surface wave, dispersion, velocity structure, buried fault
