Abstract
The sea bed shear modulus of several coastal areas in Japan were measured by newly-developed bottom shear modulus profiler(BSMP), which actually measures the ratio of the wave-induced particle motion to the wave pressure on the seafloor. Then, a linear inversion scheme was used for calculation of the shear modulus profile. Results were compared to the values obtained at the same sites by the Standard Penetration Test(SPT) using the empirical formula. The agreement between the results with BSMP and SPT is very good. Futhermore, theoretial analysis on inversion technique is given. Then, the determination of shear modulus profile can be more accurate by comparing results from several inversions with different initial models.
