Key elements of regional seismic velocity models for long period ground motion simulations

被引:65
作者
Brocher, Thomas M. [1 ]
机构
[1] US Geol Survey, Menlo Pk, CA 94025 USA
关键词
seismic; velocity; attenuation; shear; compressional; density;
D O I
10.1007/s10950-007-9061-3
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Regional 3-D seismic velocity models used for broadband strong motion simulations must include compressional-wave velocity (Vp), shear-wave velocity (Vs), intrinsic attenuation (Qp, Qs), and density. Vs and Qs are the most important of these parameters because the strongest ground motions are generated chiefly by shear- and surface-wave arrivals. Because Vp data are more common than Vs data, many researchers first develop a Vp model and convert it to a Vs model. I describe recent empirical relations between Vs, Vp, Qs, Qp, and density that allow velocity models to be rapidly and accurately calculated.
引用
收藏
页码:217 / 221
页数:5
相关论文
共 24 条