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  • Seismological Society of America (SSA)  (3)
  • Bononia University Press  (2)
  • 1
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    Ground Motions Recorded in Rome during the April 2009 L'Aquila Seismic Sequence: Site Response and Comparison with Ground-Motion Predictions Based on a Global Dataset (2013)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2013-06-08
    Description: The mainshock and moderate-magnitude aftershocks of the 6 April 2009 M  6.3 L’Aquila seismic sequence, about 90 km northeast of Rome, provided the first earthquake ground-motion recordings in the urban area of Rome. Before those recordings were obtained, the assessments of the seismic hazard in Rome were based on intensity observations and theoretical considerations. The L’Aquila recordings offer an unprecedented opportunity to calibrate the city response to central Apennine earthquakes—earthquakes that have been responsible for the largest damage to Rome in historical times. Using the data recorded in Rome in April 2009, we show that (1) published theoretical predictions of a 1 s resonance in the Tiber valley are confirmed by observations showing a significant amplitude increase in response spectra at that period, (2) the empirical soil-transfer functions inferred from spectral ratios are satisfactorily fit through 1D models using the available geological, geophysical, and laboratory data, but local variability can be large for individual events, (3) response spectra for the motions recorded in Rome from the L’Aquila earthquakes are significantly amplified in the radial component at periods near 1 s, even at a firm site on volcanic rocks, and (4) short-period response spectra are smaller than expected when compared to ground-motion predictions from equations based on a global dataset, whereas the observed response spectra are higher than expected for periods near 1 s. Online Material: Velocity models used in computing theoretical site response.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 2
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    A Ten-Year Earthquake Occurrence Model for Italy (2012)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2012-06-01
    Description: The recent Mw 6.3 destructive L’Aquila earthquake has further stimulated the improvement of the Italian operational earthquake forecasting capability at different time intervals. Here, we describe a medium-term (10-year) forecast model for Mw≥5.5 earthquakes in Italy that aims at opening new possibilities for risk mitigation purposes. While a longer forecast yielded by the national seismic-hazard map is the primary component in establishing the building code, a medium-term earthquake forecast model may be useful to prioritize additional risk mitigation strategies such as the retrofitting of vulnerable structures. In particular, we have developed an earthquake occurrence model for a 10-year forecast that consists of a weighted average of time-independent and different types of available time-dependent models, based on seismotectonic zonations and regular grids. The inclusion of time-dependent models marks a difference with the earthquake occurrence model of the national seismic-hazard map, and it is motivated by the fact that, at the 10-year scale, the contribution of time-dependency in the earthquake occurrence process may play a major role. The models are assembled through a simple averaging scheme whereby each model is weighted through the results of a retrospective testing phase similar to the ones carried out in the framework of the Collaboratory for the Study of Earthquake Predictability. In this way, the most hazardous Italian areas in the next ten years will arise from a combination of distinct models that place more emphasis on different aspects of the earthquake occurrence process, such as earthquake clustering, historical seismic rate, and the presence of delayed faults capable of large events. Finally, we report new challenges and possible developments for future updating of the model.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 3
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    Reply to "Comment on 'Seismic Hazard Assessment (2003-2009) for the Italian Building Code' by Massimiliano Stucchi, Carlo Meletti, Valentina Montaldo, Helen Crowley, Gian Michele Calvi, and Enzo Boschi" by Marco Mucciarelli and Dario Albarello (2012)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2012-12-01
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 4
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    THE SPIRAL OF CLIMATE. Civilizations of the Mediterranean and Climate Change in History (2012)
    Bononia University Press
    Details
    Publication Date: 2012-02-03
    Description: The climate has always been subject to changes, and these have often caused trouble and posed unexpected threats. People have had to adapt by finding socially, culturally and economically adequate answers. Based on authoritative scientific and historical studies, this book explores the civilizations that have called the Mediterranean their home during the last 3,000 years, and makes their history accessible to a wide readership. Aided by a group of researchers, the authors aim not only to delineate climatic trends and their social repercussions through the centuries, but also to address the ideas and theories set forth by thinkers since time immemorial. This book gives voice to ancient Greek and Latin philosophers, medieval encyclopedists (Christian and Arab), intellectuals of the modern era and the Enlightenment, and exponents of nineteenth-century positivism. Ancient and recent Mediterranean civilizations alike concerned themselves with weather forecasts, the climate and health, and the relationship between climate and the environment: they have elaborated on these issues and come up with answers since antiquity. Casting light on largely unexplored aspects of history, this journey through time works its way to the present global warming. The new challenge that lies before us is best assessed in a perspective of “historical climate change,” to which the doings of humankind are adding great momentum.
    Description: Published
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: open
    Keywords: climate history ; climatic change ; historical Mediterranean cultures ; social answers ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book
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  • 5
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    NELLA SPIRALE DEL CLIMA culture e società mediterranee di fronte ai cambiamenti climatici (2010)
    Bononia University Press
    Details
    Publication Date: 2017-04-04
    Description: Il clima è sempre cambiato e i mutamenti hanno causato danni e rischi non previsti, che hanno richiesto nuovi adattamenti e risposte adeguate sul piano sociale, culturale ed economico. Gli autori, coadiuvati da un gruppo di ricercatori, hanno esplorato la storia degli ultimi tre millenni delle civiltà mediterranee, presentando un excursus divulgativo, basato su autorevoli studi scientifici e storici. Lo scopo è di delineare in modo complessivo non solo l’andamento dei mutamenti climatici e le loro ripercussioni sociali, ma anche le idee e le teorie sul clima, dai filosofi dell’antica Grecia, agli scrittori latini, agli enciclopedisti medievali, cristiani e arabi, fino al pensiero di età moderna, all’illuminismo e al positivismo ottocentesco. Le previsioni del tempo, il clima e la salute, il rapporto fra clima e ambiente sono temi presenti in tutte le civiltà mediterranee antiche e recenti: su questi temi le culture hanno sempre elaborato interpretazioni e risposte. Questo “viaggio” nel passato, che mette in luce una storia inedita e in gran parte da esplorare, giunge fino all’attuale riscaldamento globale. Questa nuova sfida è meglio valutabile in una prospettiva di “mutamento climatico storico”, a cui l’azione antropica sta aggiungendo un formidabile acceleratore.
    Description: Published
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: open
    Keywords: climate history ; climatic change ; historical Mediterranean cultures ; social answers ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book
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