Multimode surface wave sensitivity kernels in radially anisotropic earth media

作者：Zhou Ying^*

来源：Geophysical Journal International, 2009, 176(3): 865-888.

DOI：10.1111/j.1365-246X.2008.04010.x

• Surface waves and free oscillations
• Seismic anisotropy
• Seismic tomography
• Theoretical seismology
• Wave scattering and diffraction

I calculate three-dimensional (3-D) sensitivity kernels of multimode surface wave observables in radially anisotropic earth media for perturbations in wave speeds alpha(H), alpha(V), beta(H), beta(V) and eta as well as in density rho. The 3-D phase-delay and amplitude kernels are formulated based upon Born approximation in the framework of surface wave mode summation, fully accounting for cross-branch mode coupling. Long-period, multimode, surface wave sensitivity kernels show structures of multiple reflected body waves. Jean's relation can be applied to quantify the 'mode-ray duality' of multimode surface waves and provide guidelines for measurement-window determination.

• 出版日期2009-3
• 单位美国弗吉尼亚理工大学(Virginia Tech)