supported by the National Natural Science Foundation of China (Grant No. 40774099, 10874202 and 11134011);National 863 Program of China (Grant No. 2008AA06Z205)
It is still argued whether we measure phase or group velocities using acoustic logging tools. In this paper, three kinds of models are used to investigate this problem by theoretical analyses and numerical simulations...
supported by the National Natural Science Foundation of China(Grant No.40774099,10874202);the National High Technology Research and Development Program of China(Grant No.2008AA06Z205)
Based on strong and weak forms of elastic wave equations, a Chebyshev spectral element method (SEM) using the Galerkin variational principle is developed by discretizing the wave equation in the spatial and time dom...