Bibliographies thématiques / Amatrice seismic sequence

Littérature scientifique sur le sujet « Amatrice seismic sequence »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "Amatrice seismic sequence"

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Mazzoni, Silvia, Giulio Castori, Carmine Galasso, Paolo Calvi, Richard Dreyer, Erica Fischer, Alessandro Fulco et al. « 2016–2017 Central Italy Earthquake Sequence : Seismic Retrofit Policy and Effectiveness ». Earthquake Spectra 34, no 4 (novembre 2018) : 1671–91. http://dx.doi.org/10.1193/100717eqs197m.

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The 2016–2017 Central Italy earthquake sequence consisted of several moderately high-magnitude earthquakes, between M5.5 and M6.5, each centered in a different location and with its own sequences of aftershocks spanning several months. To study the effects of this earthquake sequence on the built environment and the impact on the communities, a collaborative reconnaissance effort was organized by the Earthquake Engineering Research Institute (EERI), the Eucentre Foundation, the European Centre for Training and Research in Earthquake Engineering (EUCentre), and the Rete dei Laboratori Universitari di Ingegneria Sismica (ReLuis). The effort consisted of two reconnaissance missions: one following the Amatrice Earthquake of 24 August 2016 and one after the end of the earthquake sequence, in May 2017. One objective of the reconnaissance effort was to evaluate existing strengthening methodologies and assess their effectiveness in mitigating the damaging effects of ground shaking. Parallel studies by the Geotechnical Extreme Events Reconnaissance (GEER) Association, presented in a companion paper, demonstrate that variations in-ground motions due to topographic site effects had a significant impact on damage distribution in the affected area. This paper presents that, in addition to these ground motion variations, variations in the vulnerability of residential and critical facilities were observed to have a significant impact on the level of damage in the region. The damage to the historical centers of Amatrice and Norcia will be used in this evaluation: the historical center of Amatrice was devastated by the sequence of earthquakes; the significant damage in Norcia was localized to individual buildings. Amatrice has not experienced the same number of devastating earthquakes as Norcia in the last 150 years. As a result, its building stock is much older than that of Norcia and there appeared to be little visual evidence of strengthening of the buildings. The distribution of damage observed throughout the region was found to be indicative of the effectiveness of strengthening and of the need for a comprehensive implementation of retrofit policies.
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Marzocchi, Warner, Matteo Taroni et Giuseppe Falcone. « Earthquake forecasting during the complex Amatrice-Norcia seismic sequence ». Science Advances 3, no 9 (septembre 2017) : e1701239. http://dx.doi.org/10.1126/sciadv.1701239.

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Todrani, Alessandro, et Giovanna Cultrera. « Near-Source Simulation of Strong Ground Motion in Amatrice Downtown Including Site Effects ». Geosciences 11, no 5 (25 avril 2021) : 186. http://dx.doi.org/10.3390/geosciences11050186.

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On 24 August 2016, a Mw 6.0 earthquake started a damaging seismic sequence in central Italy. The historical center of Amatrice village reached the XI degree (MCS scale) but the high vulnerability alone could not explain the heavy damage. Unfortunately, at the time of the earthquake only AMT station, 200 m away from the downtown, recorded the mainshock, whereas tens of temporary stations were installed afterwards. We propose a method to simulate the ground motion affecting Amatrice, using the FFT amplitude recorded at AMT, which has been modified by the standard spectral ratio (SSR) computed at 14 seismic stations in downtown. We tested the procedure by comparing simulations and recordings of two later mainshocks (Mw 5.9 and Mw 6.5), underlining advantages and limits of the technique. The strong motion variability of simulations was related to the proximity of the seismic source, accounted for by the ground motion at AMT, and to the peculiar site effects, described by the transfer function at the sites. The largest amplification characterized the stations close to the NE hill edge and produced simulated values of intensity measures clearly above one standard deviation of the GMM expected for Italy, up to 1.6 g for PGA.
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Segall, Paul, et Elías Rafn Heimisson. « On the Integrated Surface Uplift for Dip‐Slip Faults ». Bulletin of the Seismological Society of America 109, no 6 (12 novembre 2019) : 2738–40. http://dx.doi.org/10.1785/0120190220.

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Abstract Interferometric Synthetic Aperture Radar observations often provide maps of vertical displacement that can be integrated to estimate an uplift volume. Relating this measure to source processes requires a model of the deformation. Bignami et al. (2019) argue that the negative uplift volume associated with the 2016 Amatrice–Norcia, central Italy, earthquake sequence requires a coseismic volume collapse of the hanging wall. Using results for dip‐slip dislocations in an elastic half‐space we show that Vuplift=(P/4)(1−2ν)sin(2δ), in which P is the seismic potency, ν is the Poisson’s ratio, and δ is the fault dip, consistent with an earlier result of Ward (1986). For reasonable estimates of net potency for the 2016 Amatrice–Norcia sequence, this simple formula yields uplift volume estimates close to that observed. We conclude that the data are completely consistent with elastic dislocation theory and do not require a volume collapse at depth.
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Grelle, Gerardo, Laura Bonito, Maresca Rosalba, Silvia Iacurto, Claudia Madiai, Paola Revellino et Giuseppe Sappa. « Topographic effects observed at Amatrice hill during the 2016–2017 Central Italy seismic sequence ». Earthquake Engineering and Engineering Vibration 20, no 1 (janvier 2021) : 63–78. http://dx.doi.org/10.1007/s11803-021-2005-z.

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Clementi, Francesco, Gabriele Milani, Angela Ferrante, Marco Valente et Stefano Lenci. « Crumbling of Amatrice clock tower during 2016 Central Italy seismic sequence : Advanced numerical insights ». Frattura ed Integrità Strutturale 14, no 51 (4 décembre 2019) : 313–35. http://dx.doi.org/10.3221/igf-esis.51.24.

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Carminati, Eugenio, Christian Bignami, Carlo Doglioni et Luca Smeraglia. « Lithological control on multiple surface ruptures during the 2016–2017 Amatrice-Norcia seismic sequence ». Journal of Geodynamics 134 (février 2020) : 101676. http://dx.doi.org/10.1016/j.jog.2019.101676.

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Soldati, Gaia, Lucia Zaccarelli et Licia Faenza. « Spatio-temporal seismic velocity variations associated to the 2016–2017 central Italy seismic sequence from noise cross-correlation ». Geophysical Journal International 219, no 3 (27 septembre 2019) : 2165–73. http://dx.doi.org/10.1093/gji/ggz429.

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SUMMARY We investigate the temporal changes of crustal velocity associated to the seismic sequence of 2016–2017, which struck central Italy with a series of moderate to large earthquakes. We cross-correlate continuous recordings of 2 yr of ambient seismic noise from a network of 28 stations within a radius of 90 km around Amatrice town. We then map the spatio-temporal evolution of the velocity perturbations under the effect of subsequent earthquakes. Coinciding with each of the three main shocks of the sequence we observe a sudden drop of seismic velocity which tends to quickly recover in the short term. After the end of the strongest activity of the sequence, the coseismic velocity changes display gradual healing towards pre-earthquake conditions following a quasi-linear trend, such that by the end of 2017 about 75 per cent of the perturbation is recovered. The spatial distribution of the velocity drop fluctuates with time, and the area that shows the most intense variations beyond the ruptured fault system elongates in the NE direction. This zone roughly corresponds to a region of foredeep sedimentary deposits consisting of highly hydrated and porous sandstones, which respond to the passage of seismic waves with increased pore pressure and crack number, leading to a reduction of the effective relative velocity.
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Grazzini, Alessandro, Filiberto Chiabrando, Sebastiano Foti, Giulia Sammartano et Antonia Spanò. « A Multidisciplinary Study on the Seismic Vulnerability of St. Agostino Church in Amatrice following the 2016 Seismic Sequence ». International Journal of Architectural Heritage 14, no 6 (20 février 2019) : 885–902. http://dx.doi.org/10.1080/15583058.2019.1575929.

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Tan, Yen Joe, Felix Waldhauser, William L. Ellsworth, Miao Zhang, Weiqiang Zhu, Maddalena Michele, Lauro Chiaraluce, Gregory C. Beroza et Margarita Segou. « Machine-Learning-Based High-Resolution Earthquake Catalog Reveals How Complex Fault Structures Were Activated during the 2016–2017 Central Italy Sequence ». Seismic Record 1, no 1 (1 avril 2021) : 11–19. http://dx.doi.org/10.1785/0320210001.

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Abstract The 2016–2017 central Italy seismic sequence occurred on an 80 km long normal-fault system. The sequence initiated with the Mw 6.0 Amatrice event on 24 August 2016, followed by the Mw 5.9 Visso event on 26 October and the Mw 6.5 Norcia event on 30 October. We analyze continuous data from a dense network of 139 seismic stations to build a high-precision catalog of ∼900,000 earthquakes spanning a 1 yr period, based on arrival times derived using a deep-neural-network-based picker. Our catalog contains an order of magnitude more events than the catalog routinely produced by the local earthquake monitoring agency. Aftershock activity reveals the geometry of complex fault structures activated during the earthquake sequence and provides additional insights into the potential factors controlling the development of the largest events. Activated fault structures in the northern and southern regions appear complementary to faults activated during the 1997 Colfiorito and 2009 L’Aquila sequences, suggesting that earthquake triggering primarily occurs on critically stressed faults. Delineated major fault zones are relatively thick compared to estimated earthquake location uncertainties, and a large number of kilometer-long faults and diffuse seismicity were activated during the sequence. These properties might be related to fault age, roughness, and the complexity of inherited structures. The rich details resolvable in this catalog will facilitate continued investigation of this energetic and well-recorded earthquake sequence.
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Actes de conférences sur le sujet "Amatrice seismic sequence"

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Ebrahimian, Hossein, et Fatemeh Jalayer. « RETROSPECTIVE OPERATIONAL AFTERSHOCK FORECASTING FOR 2016 AMATRICE-NORCIA SEISMIC SEQUENCE IN CENTRAL ITALY ». Dans 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens : Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019. http://dx.doi.org/10.7712/120119.7105.19881.

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Clementi, Francesco, Gabriele Milani, Valentina Gazzani, Marina Poiani et Stefano Lenci. « Damage assessment by the non-smooth contact dynamics method of the iconic crumbling of the clock tower in Amatrice after the 2016 Central Italy seismic sequence ». Dans CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5114432.

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Rogulska, Aleksandra. « TEMPORARY CULTURAL FACILITIES AS AN ELEMENT OF REBUILDING STRATEGIES FOR CITIES AFFECTED BY EARTHQUAKES ». Dans GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b2/v2/35.

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The Apennine Peninsula is one of the most densely-populated and most seismically active regions of Europe, possessing a wealth of cultural heritage. Historical cities and buildings are a part of this heritage. The earthquake damage prevention programme implemented in Italy does not cover existing buildings, and reconstruction plans for damaged cities, because of the threat's specificity, are always prepared after a disaster. In the case of heritage buildings, particularly those of super-local significance, decisions involving a complete reconstruction of their original form are typically made, erasing all traces of the tragedy. Reconstruction can take years, during which society is left without cultural facilities that are key to good morale. Opportunities provided by the phase between a disaster and restoring the buildings are too often underappreciated, while the time spent making the decision what and how to rebuild should be spent on action. Strategies involving temporary buildings allow to prevent the disappearance of public functions during the period preceding the reconstruction of major cultural facilities. These buildings should be designed as resilient, assuming a capacity to adapt to changing conditions and upholding or rapidly returning to a functional state after a disaster. They can enable the time between the disaster and making the decision about reconstruction to be used to identify and test new relations in the surroundings created through the loss of a section of substance. They provoke a debate about what must be rebuilt and at what cost, they facilitate understanding of the goals of a planned reconstruction. But most importantly, they sustain the genius loci, in order to affect the city's reconstruction process in its social, psychological and economic aspects. By analysing temporary cultural facilities built in Italian cities damaged by earthquakes, the study discusses methods of building temporary public buildings and features an attempt at assessing interventions that precede reconstruction. Based on the experiences of the city of L'Aquila severely damaged in 2009 and drawing conclusions from mistakes made during the implementation of pre-reconstruction strategies in the town, the author developed a proposal of a temporary intervention for the Basilica of St. Benedict of Nursia, which collapsed on the 30th of October 2016 as an effect of the Amatrice-Visso-Norcia seismic sequence. The proposal stresses the preservation of the previous function of the complex at its original site. This is meant to maintain the occupancy of Norcia's centre by the Benedictine monks, whose tradition is strongly linked with the city and makes it a major pilgrimage destination that is important to Christians.
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