Linearized Inversion of MASW Data Using Inequality Constraints

Inequality constraint formulation of least squares inversion is a flexible method to insert physical constraints (as well as a priori information) into the inversion process. In MASW (Multichannel Analysis of Surface Waves) inversion this has proved to be useful to stabilize convergence when applied to fundamental-mode dominated data as well as to data containing higher modes of propagation. A reliable S-wave velocity profile can be obtained from inversion of surface wave data if all available information is inserted into the inversion algorithm.