MODELING OF A CONSTANT-Q - METHODOLOGY AND ALGORITHM FOR AN EFFICIENTAND OPTIMALLY INEXPENSIVE VISCOELASTIC TECHNIQUE

Linear anelastic phenomena in wave propagation problems can be well mo deled through a viscoelastic mechanical model consisting of standard l inear solids. In this paper we present a method for modeling of consta nt Q as a function of frequency based on an explicit closed formula fo r calculation of the parameter fields. Several standard linear solids connected in parallel can be tuned through a single parameter to yield an excellent constant Q approximation. The proposed method enables su bstantial savings in computations and memory requirements. Experiments show that the new method also yields higher accuracy in the modeling of Q than, e.g., the Pade approximant method.