Seismic characterization of lava flow facies in the critical zone of the Deccan Traps is performed using the MASW-derived subsurface shear wave velocity models. Subsequently, the subsurface anomalies are co-analyzed with the outcrop, and the role of the bole layer and dyke in the weathering and vegetation pattern is investigated.

This study examines error propagation from data space to model space during 3-D inversion of CSEM data using a Gauss–Newton-based algorithm. The concept of higher-order generalized singular value decomposition is used for this analysis.

A two-step modeling algorithm based on radiation boundary conditions is developed by exploiting the smoothness of the EM field. The first step involves a coarse-grid finite-difference modeling and computation of a radiation boundary field vector. In the second step, a relatively fine grid modeling is performed with radiation boundary conditions. The fine-grid discretization does not include the stretched grid and air medium. An initial solution derived from coarse-grid modeling is used for fine-grid modeling.

We developed an algorithm to simulate two-dimensional frequency domain acousticwave response in a transversely isotropic medium with a tilted symmetry axis. The algorithm employs a support operator finite-difference method for modelling.

we develop an optimized strategy to omit the dependence of the 2D modelling problem on the wavenumbers. Instead of using the wavenumbers domain approach, the problem is solved in the space domain using a new boundary condition derived in this study.

A novel algorithm for 3D inversion algorithm based on radiation boundary, which efficiently handles arbitrarily shaped inversion domains.