Urban Seismic Networks, Structural Health and Cultural Heritage Monitoring: The National Earthquakes Observatory (INGV, Italy) Experience

Antonino D'Alessandro,Sergio Falcone,Antonio Costanzo,Fabrizia Buongiorno,Salvatore Scudero,Giovanni Vitale,Simone Marzorati,Marco Cattaneo,Carlo Doglioni,Carmelo La Piana,Salvatore Stramondo,Chiara Ladina

doi:10.3389/fbuil.2019.00127

Antonino D'Alessandro, Sergio Falcone + Show 10 more

Open Access

https://doi.org/10.3389/fbuil.2019.00127

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Abstract

An effective reduction of seismic risk can implement through a multiscale approach to the earthquakes monitoring. Devoted monitoring network are essential to cope with the seismic emergency in urban areas, to assess the damage scenarios, which are useful for the preservation of the strategic functions and services and to improve the community resilience to earthquakes. The National Earthquake Observatory, Italian Institute for Geophysics and Volcanology (ONT-INGV, Italy), has been recently involved in several projects devoted to the reduction of seismic risk by means of the implementation of urban-scale and building-scale monitoring networks. Such systems represent a necessary support for the well-established national seismic network. All these approaches (country, urban, and building scale) could be framed within of a unique system in which each part holds different tasks, with the common final objective of the earthquake risk reduction. In this papers different approaches, experiences and potential capabilities on urban seismic networks, structural health and cultural heritage monitoring implemented in Italy by the ONT-INGV will be presented, with the ultimate goal of achieving an effective integrated multi-scale system.

Highlights

In the last decade the awareness of the seismic risk, supported by the technological development, resulted in the increasing interest in the monitoring of the exposed urban centers and their built heritage
The recent seismic history of Italy proves that the effects of large earthquakes are often destructive in the highly vulnerable urban areas, and especially with reference to the huge Italian cultural and historic heritage
Those are the cases of Umbria and Marche earthquake in 1997 (Spence and D’Ayala, 2018), L’Aquila in 2009 (D’Ayala and Paganoni, 2011; Lagomarsino, 2012), Emilia-Romagna in 2012 (Andreini et al, 2014; Valente et al, 2017) and, more recently, Central Italy during the 2016-2017 seismic sequence (Caserta et al, 2016; Fiorentino et al, 2018)

Summary

INTRODUCTION

In the last decade the awareness of the seismic risk, supported by the technological development, resulted in the increasing interest in the monitoring of the exposed urban centers and their built heritage. The permanent station is equipped with a low cost and/or cost-effective MEMS accelerometer capable to record signals larger than 1 mg with a good signal to noise ratio (Pierleoni et al, 2018) The sensors with these characteristics allow the detection of body waves from small earthquakes and provide data useful to regional seismic monitoring and/or to the creation of shake maps too. The continuous monitoring and transmission in real-time has allowed 10 earthquakes to be recorded in only 4 months (between January and April, 2016) with a good signal-to-noise ratio, considering that both small earthquakes (local magnitude, ML between 2.4 and 2.7) locally occurred and moderate earthquakes (moment magnitude, MW between 4.1 and 5.2) with epicenters in the Mediterranean area All of these earthquakes, produced low intensity seismic records at the base of the structure. The data could be used to analyze any effects on the structural response following natural events (e.g., any earthquakes) or anthropic interventions (e.g., consolidation works)

CONCLUSIVE REMARKS

Findings

DATA AVAILABILITY STATEMENT