Ezio D’Alema
A5004924331- Methane Hydrates and Related Phenomena
- Geophysics and Gravity Measurements
- Geological and Geophysical Studies
- Seismic Waves and Analysis
- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Seismic Performance and Analysis
- Seismic Imaging and Inversion Techniques
- Earthquake Detection and Analysis
- Structural Health Monitoring Techniques
- High-pressure geophysics and materials
- Urban Planning and Valuation
- Geological and Geophysical Studies Worldwide
- Geophysical Methods and Applications
- 3D Surveying and Cultural Heritage
- Historical and Environmental Studies
- Landslides and related hazards
- Archaeological and Historical Studies
- Masonry and Concrete Structural Analysis
- Geophysics and Sensor Technology
- Inertial Sensor and Navigation
- Astronomical Observations and Instrumentation
- Spacecraft Design and Technology
- Drilling and Well Engineering
- Legal and Labor Studies
Istituto Nazionale di Geofisica e Vulcanologia
2010-2024
University of Vienna
2019
Polytechnic University of Turin
2009
On 6 April 2009, 01:32:40 UTC, an Mw 6.3 earthquake occurred in the Abruzzo region (central Italy), close to L'Aquila, a town of 68,500 inhabitants. About 300 people died because collapse many residential and public buildings, damage was widespread L'Aquila its neighboring municipalities. The at 9.5 km depth along NW-SW normal fault with SW dip, located below city (Istituto Nazionale di Geofisica e Vulcanologia [INGV] 2009a). The maximum observed intensity is IX–X MCS scale most relevant...
Abstract From March to September 2009, a velocimetric network was installed in Narni, central Italy, village on the top of limestone ridge. The aim investigate local site effects due 220-m-high ridge, which is characterized by slopes ranging from 22° 35°. To amplification without and with reference site, three stations were at base hill seven crest. recorded 702 earthquakes, many them 2009 L’Aquila sequence. determine dependence morphological features, spectra computed for horizontal...
<p>The availability of multidisciplinary and high-resolution data is a fundamental requirement to understand the physics earthquakes faulting. We present Alto Tiberina Near Fault Observatory (TABOO), research infrastructure devoted studying preparatory processes, slow fast deformation along fault system located in upper Tiber Valley (northern Apennines), dominated by 60 km long low-angle normal (Alto Tiberina, ATF) active since Quaternary. TABOO consists 50 permanent seismic stations...
<p>At 01:36 UTC (03:36 local time) on August 24th 2016, an earthquake Mw 6.0 struck extensive sector of the central Apennines (coordinates: latitude 42.70° N, longitude 13.23° E, 8.0 km depth). The caused about 300 casualties and severe damage to historical buildings economic activity in area located near borders Umbria, Lazio, Abruzzo Marche regions. Istituto Nazionale di Geofisica e Vulcanologia (INGV) few minutes hypocenter Accumoli, a small town province Rieti. In hours after...
Kyrgyzstan, which is located in the collision zone between Eurasian and Indo-Australian lithosphere plates, prone to large earthquakes as shown by its historical seismicity.Hence, an increase knowledge awareness of local authorities decision makers possible consequence a earthquake, based on improved seismic hazard assessments realistic earthquake risk scenarios, mandatory mitigate effects earthquake.To this regard, Central Asia Cross-Border Natural Disaster Prevention (CASCADE) project aims...
In this study the attenuation mechanism of seismic wave energy in north central Italy is estimated using low-magnitude earthquake local data recorded at six stations managed by INGV. Most analysed events are located along Alpine chain zone Iseo and Garda lakes, while a minor part Po valley. The investigated characterized occurrence significantly intense earthquakes (magnitude up to 6.6) most recent occurred 2004 close city Salò on coast lake (Mw= 5.0). Due high population density presence...
<p>Rapid-response seismic networks are an important element in the response to crises. They temporarily improve detection performance of permanent monitoring systems during sequences. The improvement earthquake and location capabilities can be for decision makers assess current situation, provide invaluable data scientific studies related hazard, tectonics physics. Aftershocks clustering locations events help characterize dimensions causative fault. Knowing number, size timing...
SUMMARY To constrain seismic anisotropy under and around the Alps in Europe, we study SKS shear wave splitting from region densely covered by AlpArray network. We apply a technique based on measuring intensity, constraining well both fast orientation delay. Four years of teleseismic earthquake data were processed, 723 temporary permanent broad-band stations deployment including ocean-bottom seismometers, providing spatial coverage that is unprecedented. The applied automatically (without...
In August 2016, a magnitude 6.0 earthquake struck Central Italy, starting devastating seismic sequence, aggravated by other two events of 5.9 and 6.5, respectively. After the first mainshock, four Italian institutions installed dense temporary network 50 stations in an area 260 km2. The was registered International Federation Digital Seismograph Networks with code 3A quoted Object Identifier ( https://doi.org/10.13127/SD/ku7Xm12Yy9 ). Raw data were converted into standard binary miniSEED...
Summary We take advantage of the new large AlpArray Seismic Network (AASN) as part research initiative (www.alparray.ethz.ch), to establish a consistent seismicity-catalogue for greater Alpine region (GAR) time period 2016 January 1–2019 December 31. use data from 1103 stations including AASN backbone composed 352 permanent and 276 (including 30 OBS) temporary broad-band (network code Z3). Although characterized by moderate seismic hazard, European Alps surrounding regions have higher risk...
The largest dataset ever recorded during a normal fault seismic sequence was acquired the 2009 emergency triggered by damaging earthquake in L'Aquila (Italy). This possible through coordination of different rapid-response networks Italy, France and Germany. A network more than 60 stations up to 70,000 earthquakes. Here, we describe open-data archives where it is find this unique set data for studies related hazard, seismotectonics physics. Moreover, briefly some immediate direct applications...
<em>On August 24, 2016, at 01:36 UTC a M<sub>W </sub>6.0 earthquake struck an extensive area of the Central Apennines (Italy). It was followed by large aftershock (M<sub>W </sub>5.3, 02:33 UTC) and about 20 earthquakes with magnitude greater than 4.0, located between towns Norcia Amatrice. Due to mainshock widespread damaging level buildings in epicentral area, Emersito task force has been mobilized Istituto Nazionale di Geofisica e Vulcanologia (INGV). The aim...
Online Material: Earthquake catalog and strong motion stations. In Italy, strong‐motion monitoring started in the early 1970s, when Rete Accelerometrica Nazionale (RAN, Italian National Strong Motion Network; http://www.protezionecivile.gov.it/jcms/it/ran.wp; see Data Resources for a complete listing of all websites listed this article) was designed installed by Agenzia per le Nuove Tecnologie, l’Energia e lo Sviluppo Economico Sostenibile (ENEA) ENEL (an power company). The aim to evaluate...
Taking advantage of a large displacement-release experiment on two- story reinforced concrete building located in Bagnoli (Naples, Italy), we performed free-field measurements using 3D seismometers, accelerometers, and 100-m-long vertical array. The ground motion was noticeable: near the building, acceleration exceeded 5% g . At each measurement point, it possible to recognize two source terms, due tested reaction structure. sources generated different wave trains. High-frequency...
SUMMARY Surface waves extracted from ambient noise cross-correlations can be used to study depth variations of azimuthal anisotropy in the crust and upper mantle, complementing XKS splitting observations. In this work, we propose a novel approach based on beamforming estimate Rayleigh wave phase velocities cross-correlations. This allows us identify remove measurements biased by front deformation due 3-D heterogeneities, properly uncertainties associated with observed velocities. second...
SUMMARY The Pannonian Basin, situated in Central Europe, is surrounded by the Alpine, Carpathian and Dinaric orogens. To understand its tectonic characteristics evolution, we determine a shear wave velocity model of crust, mantle lithosphere asthenosphere consistently jointly inverting Rayleigh phase velocities measured from earthquake (EQ) ambient noise (AN) data. For AN data, continuous waveform data were collected 1254 stations, covering an area within 9° centre Basin during time period...
The aim of this article is to investigate the ground motion attenuation most industrialized and populated regions Italy, evaluating capability different approaches estimate site dependent models. 5.2 local magnitude earthquake on November 24, 2004 shocked areas Northern Italy producing damage about 215 million euros. data set, including 243 earthquakes up 5.2, has been collected in period December 2002–October 2005 by 30 three-component seismic stations managed Istituto Nazionale di...
SUMMARY We infer seismic azimuthal anisotropy from ambient-noise-derived Rayleigh waves in the wider Vienna Basin region. Cross-correlations of ambient field are computed for 1953 station pairs and periods 5 to 25 s measure directional dependence interstation Rayleigh-wave group velocities. perform analysis each period on whole data set, as well overlapping 2°-cells regionalize measurements, study expected effects isotropic structure, isotropic–anisotropic trade-offs. To extract that relates...
Geophysical site investigations have been performed in association with deployment of a dense array 95 3-component seismometers on the Cavola landslide Northern Apennines. The aim is to study propagation seismic waves heterogeneous medium through comparison observation and modelling. small-aperture (130 m×56 m) operated continuously for three months 2004. consists clay body sliding over mudstone-shale basement, has record historical activity, including destruction small village 1960. include...
After moderate to strong earthquakes in Italy or the surrounding areas, Istituto Nazionale di Geofisica e Vulcanologia (INGV; National Institute for Geophysics and Volcanology) activates a temporary seismic network infrastructure. This is devoted integration with Italian Seismic Network (RSN) [Delladio 2011] epicentral area, thus improving localization of aftershocks distribution after mainshock. infrastructure composed stand-alone, locally recording part (Re.Mo.) [Moretti et al. 2010]...