Madagascar Programming Reference Manual |

can be written as
| |

where is the Laplacian symbol, is the source wavelet, is the velocity, and is a scalar wavefield. A discrete time-step involves the following computations:

where , and represent the propagating wavefield at various time steps. In this exercise we shall use a discrete Laplacian accurate up to the fourth order and the second derivative of time is accurate up to the second order.

2011-07-02