by S. DROSTE and R. TEISSEYRE1
1Institute of Geophysics, Polish Academy of Sciences
Modern trends in local problems of seismicity privilege establishing seismographs
in the boreholes or inside the mines or deep tunnels. From the point of view
of local shallow seismic activity such a station system forms a three-dimensional
network.
Analysis of signs of the P-waves from a nearby focus provides large possibilities
such as determination of an approximate position and depth interval and an
appropriate fault-plane solution.
These advantages of a three-dimensional network become effective when a system
of coordinate planes drawn from each station is cutting a seismic region into
relatively small parallelepiped blocks.
The examples based on the data from the Upper-Silesia are presented; the computer
program is here suitable.