The Okada Model for Earthquake, Crustal Deformation, and Fault Analysis

The Okada model represents a fundamental and extensively utilized inversion approach primarily applied in earthquake research, crustal deformation studies, and fault analysis. Developed as a MATLAB-based software package, it incorporates robust numerical implementations including dislocation theory algorithms, elastic half-space calculations, and deformation tensor computations. The package features multiple functional modules for parameter inversion, surface deformation visualization, and slip distribution modeling. Through its analytical solutions for rectangular dislocations in an elastic half-space, researchers can simulate various fault parameters including strike, dip, rake, and slip magnitude. The implementation utilizes MATLAB's optimization toolbox for inverse problem solving and includes pre-processed geodetic data for model validation. This enables deeper insights into subsurface tectonic structures and kinematic mechanisms, thereby enhancing our capability for geological hazard assessment and risk mitigation strategies to protect public safety and infrastructure.