Abstract
We present an approach to Earthquake Early Warning for Southern Italy that integrates regional and on-site systems. The regional approach is based on the PRobabilistic and Evolutionary early warning SysTem (PRESTo) software platform. PRESTo processes 3-components acceleration data streams and provides a peak ground-motion prediction at target sites based on earthquake location and magnitude computed from P-wave analysis at few stations in the source vicinity. On the other hand, the on-site system is based on the real-time measurement of peak displacement and dominant period, on a 3 s P-wave time-window. These values are compared to thresholds, set for a minimum magnitude 6 and instrumental intensity VII, derived from empirical regression analyses on strong-motion data. Here we present an overview of the system and describe the algorithms implemented in the PRESTo platform. We also show some case-studies and propose a robust methodology to evaluate the performance of this Early Warning System.
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This work was financially supported by Dipartimento della Protezione Civile (DPC) through Analisi e Monitoraggio del Rischio Ambientale (AMRA Scarl).
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Zollo, A. et al. (2014). An Integrated Regional and On-Site Earthquake Early Warning System for Southern Italy: Concepts, Methodologies and Performances. In: Wenzel, F., Zschau, J. (eds) Early Warning for Geological Disasters. Advanced Technologies in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12233-0_7
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DOI: https://doi.org/10.1007/978-3-642-12233-0_7
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