===affil2: University of British Columbia ===firstname: Luz Angelica ===firstname4: Christoph ===firstname3: Lars ===lastname2: Haber ===keyword1: OTHER ===lastname: Caudillo Mata ===firstname5: ===affil6: ===lastname3: Ruthotto ===email: lcaudill@eos.ubc.ca ===keyword2: Electromagnetics ===keyword_other2: Geophysics ===lastname6: ===affil5: ===otherauths: ===lastname4: Schwarzbach ===affil4: University of British Columbia ===lastname7: ===competition: no ===affil7: ===firstname7: ===postal: 4013-2207 Main Mall, Vancouver, BC. V6T 1Z2 (University of British Columbia) ===firstname6: ===ABSTRACT: In Geophysics, simulation of low-frequency Electromagnetic (EM) fields in highly heterogeneous, anisotropic media is computationally very expensive. One reason being the multiple length scales that coexist in a given realistic setting. Discrete models require very fine meshes leading to solve large linear systems of equations. In this work, we develop a multiscale finite volume method with oversampling for the quasi-static Maxwell's equations in the frequency domain. This method reduces the size of the system of equations to be solved while retaining a good level of accuracy in the solution. The performance of our method is shown in the context of an EM geophysical application. ===affil3: Emory University ===keyword_other1: Coarse Approximation ===lastname5: ===affilother: ===title: A Multiscale Finite Volume with Oversampling Method to simulate Low-frequency Electromagnetic geophysical responses ===firstname2: Eldad