Investigation of grid parameterization of earthquake source

Abstract:

Cell parameteriztion has been applied in the modeling of earthquake source, which is constrained by the limitation that minimum wavelength must far outweigh the size of cell. As a result, relatively high frequency records are abandoned during source inversion when the length of cell is large. In this paper, we develop the grid parameteriztion of earthquake source to interpolate the source time function and green’s function. We then intergrate the convolution of the interpolated functions to get the displacement. In this way, every single point on the fault plane has been considered and thus the limitation that the wavelength must far outweigh the size of cell can be removed.