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The main objective of the codification of fault planes is to look for a new possibility in terms of location of seismic sources. In order to achieve this, it is necessary the construction of a regular grid of assumed hypocenters on the fault plane. One of the key steps of the method is the search of the fastest seismic ray that travels between a specific hypocenter and a given seismograph. This method should be used with a minimum of three seismographs, so that it is possible to make maps of arrival time isolines for each seismograph. In consequence, it is also possible to make maps of isolines of differences in arrival times between two seismographs. Those maps should be also on the fault plane. When two maps of time differences are placed one above another, one can locate the possible hypocenter of an event that was originated on the studied fault plane. An important application is the study of the attenuation of seismic energy, utilizing a similar methodology to the one used for the codification, and including the calculation of the attenuation that takes place during the course of the seismic ray inside a specific rock and at the boundaries between two different media.
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References
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