Abstract
In general, many earthquakes occur after a destructive shallow earthquake or before a volcanic eruption. It is very important to determine accurate hypocenters as first as possible at a time of such a huge seismic activity, since seismicity data are essential for the understanding of the seismic or volcanic activity. We developed an automatic data processing system of seismic waves that can locate accurate hypocenters. It has a swarm mode processing which works even at a huge seismicity. The main difference between the swarm and ordinary modes is that the former assumes hypocenters for all events to be in a small area. The application of swarm mode to waveform data at a huge seismicity after the 1996 Onikobe earthquake sequence showed that the new system is very effective and can determine more precise hypocenters rather than manual pickings.
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© 2003 Springer-Verlag
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Horiuchi, S. (2003). Automatic hypocenter location at times of extremely high seismic activity. In: Methods and Applications of Signal Processing in Seismic Network Operations. Lecture Notes in Earth Sciences, vol 98. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0117704
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DOI: https://doi.org/10.1007/BFb0117704
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