Localisation of Earthquakes and their Tracking in Real-time

Having previously worked on locating micro-seismic events within Cornish Batholiths at a Geothermal Energy Project (“Hot Dry Rocks”) in Cornwall England in the 1980’s attention became focused on further and larger work by the occurrence of the Tsunami in 2004 and the large Earthquakes in Sichuan (China 2008). Algorithms have been devised that may run in real-time acting as initial stages in the response of EEW Systems. These algorithms consider both the assumed spherical and the spheroidal Earth geometry directly and can deliver the Epicenter and Hypocenter for each event concurrently using tabular scanning methods. The algorithms developed here were tested against a catalogue of seven Earthquakes of mixed depth and magnitude whose data was selected from Databases held by IRIS (Incorporated Research Institutes for Seismology). It is considered that this text might be considered as an initial source for anybody about to design software for their own seismic observatory