摘要
通过对福建地区不同地壳速度模型计算的理论面波(瑞利波和勒夫波)波形与由相同测线上观测到的噪声记录提取的面波格林函数进行比较,对各种模型理论面波波形与实际观测噪声面波格林函数的拟合程度进行评价,进而定性分析各个地壳速度结构可靠性。结合福建省地震台网的噪声数据,研究利用噪声记录提取面波格林函数,根据面波波形对地下分层速度结构比较敏感的特点,通过对福建地区不同地壳速度模型计算的理论面波(瑞利波和勒夫波)波形进行比较分析。总结各种模型的优缺点,得到哪些模型在福建地区比较适用。
According to the surface wave calculation of different crustal velocity models of the Fujian area(Rayleigh wave and Love wave),compared with the surface wave Green function extracted from the noise records observed on the sames line,this paper evaluates the fitting degree of model surface waveform and actual observation noise surface wave Green functions,and qualitatively analyses the reliability of each crustal velocity structure.Then combined with the noise data of seismic network of Fujian Province,this paper studies the surface wave Green function extracted from noise records,according to the characteristics of surface wave,which is more sensitive to the underground layered velocity structure.Through the comparative analysis of the waveforms(Rayleigh and love) of theoretical surface waves calculated based on different crustal velocity models of the Fujian area and the surface wave Green functions extracted from noise records observed on the same measurement line,this paper summarizes the advantages and disadvantages of various models and determines what kind of model is applicable in the area of Fujian.
出处
《地震工程与工程振动》
CSCD
北大核心
2014年第3期47-54,共8页
Earthquake Engineering and Engineering Dynamics
