Simulation und Inversion der elastischen Wellenausbreitung in stark heterogenen Medien
Our project is concerned with the modeling of elastic waves in heterogeneous media with different explicit finite difference (FD) schemes. For example we apply the so-called rotated staggered grid FD technique. Using this modified grid it is possible to simulate the propagation of elastic waves in a 2D or 3D medium containing cracks, pores or free surfaces without hard-coded boundary conditions. Therefore it allows efficient and precise numerical studies of different fractured structures. We use our MPI modeling code Craymod to solve different acoustic problems. The length scale of our modelings varies from centimetersfor non-destructive testing experiments to kilometers for considerations with refraction seismics.