Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4977
Authors: | Zollo, A.* Iannaccone, G.* Lancieri, M.* Cantore, L.* Convertito, V.* Emolo, A.* Festa, G.* Gallovič, F.* Martino, C.* Satriano, C.* Gasparini, P.* |
Title: | Earthquake early warning system in southern Italy: Methodologies and performance evaluation | Journal: | Geophysical research letters | Series/Report no.: | /36 (2009) | Publisher: | American Geophysical Union | Issue Date: | 27-Feb-2009 | DOI: | 10.1029/2008GL036689 | Keywords: | Seismic early warning Southern Italy Synthetic seismograph |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk | Abstract: | We investigate the effect of extended faulting processes and heterogeneous wave propagation on the early warning system capability to predict the peak ground velocity (PGV) from moderate to large earthquakes occurring in the southern Apennines (Italy). Simulated time histories at the early warning network have been used to retrieve early estimates of source parameters and to predict the PGV, following an evolutionary, probabilistic approach. The system performance is measured through the Effective Lead-Time (ELT), i.e., the time interval between the arrival of the first S-wave and the time at which the probability to observe the true PGV value within one standard deviation becomes stationary, and the Probability of Prediction Error (PPE), which provides a measure of PGV prediction error. The regional maps of ELT and PPE show a significant variability around the fault up to large distances, thus indicating that the system's capability to accurately predict the observed peak ground motion strongly depends on distance and azimuth from the fault. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
GRL-2009-EW.pdf | 838.57 kB | Adobe PDF |
WEB OF SCIENCETM
Citations
50
81
checked on Feb 10, 2021
Page view(s) 50
305
checked on Apr 24, 2024
Download(s)
29
checked on Apr 24, 2024