A novel 3D forward modeling tool based on the Spectral-Infinite-Element Method (SIEM) was developed to simulate electrical resistivity (ERT) and induced polarization (IP) surveys in complex subsurface environments. My work bridged high-performance computing with geophysical algorithm development, enabling:

• Accurate modeling of unbounded domains without artificial boundary conditions.

• Inclusion of topography, anisotropy, and heterogeneities in synthetic resistivity/IP simulations.

• Validation against analytical and open-source results (e.g., SimPEG) using realistic 3D earth models.

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