An application of coherence-based method for earthquake detection and microseismic monitoring (Irpinia fault system, Southern Italy).

Autor: Adinolfi, G. M., Picozzi, M., Cesca, S., Heimann, S., Zollo, A.
Zdroj: Journal of Seismology; Oct2020, Vol. 24 Issue 5, p979-989, 11p
Abstrakt: A coherence-based earthquake detection technique was applied to continuous (1 year) waveform data recorded along the Irpinia fault system (Southern Italy). The earthquake detection was performed using coherent P- and S-wave arrivals recorded by the dense seismic network operating in Irpinia and assuming a local velocity model. We applied a strategy to simultaneously detect and locate earthquakes and to discriminate among true and false detections using an automated and fast procedure, able to process 1 year of data in ~ 1.75 days. The final catalogue of automatically retrieved earthquakes shows a performance improvement with respect to the standard monitoring practices, with an increase in the number of detected small events of about a factor three with respect to the automatic Earth-worm Binder implemented in ISNet and decreases in completeness magnitude of almost half unit magnitude. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index