for help about the input

[BFF-LEI-Lei]

Hi, given the calculation efficiency of SW4 and its ability to consider the ground layers and topography in a relatively huge region, it's a powerful and useful tool to simulate the whole process of an earthquake.

However, I want to reduce the size of the region which may be 100km×100km×50km, containing the rupture, to a relatively small one without this rupture which size may be 5km×5km×5km.

Based on such a demand, I hope a seismic wave can be injected into this smaller region. As a result, I can simulate the propagation of a seismic wave in this region with less computation cost.

So, are there any measures to input a seismic wave at the boundaries of the SW4 model?

Thanks a lot!