A5040578606- earthquake and tectonic studies
- Seismic Waves and Analysis
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Seismology and Earthquake Studies
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Earthquake Detection and Analysis
- Geological and Tectonic Studies in Latin America
- Methane Hydrates and Related Phenomena
- Archaeological and Historical Studies
- Landslides and related hazards
- Geological and Geophysical Studies
- Geophysical and Geoelectrical Methods
- Underwater Acoustics Research
- Asphalt Pavement Performance Evaluation
- Building materials and conservation
- Urban Planning and Valuation
- Blind Source Separation Techniques
- Geochemistry and Geologic Mapping
- Geophysical Methods and Applications
- Smart Materials for Construction
- Infrastructure Maintenance and Monitoring
- Human-Animal Interaction Studies
- Image and Signal Denoising Methods
Istituto Nazionale di Geofisica e Vulcanologia
2010-2023
Murata (United States)
1998
In this paper we present P wave tomographic images of the mantle beneath Italy obtained by inverting ∼6000 teleseismic and PKP arrival times, accurately repicked, recorded in time period 1988–1994 stations National Seismic Network Istituto Nazionale di Geofisica. We pay great attention data selection picking procedure seismic phases to obtain a very high quality set. The were inverted with well‐established Aki‐Christofferson‐Husebye technique; different reference models residuals computation...
A long sequence of earthquakes, six with magnitudes between 5 and 6, struck Central Italy starting on September 26, 1997, causing severe damages loss human lives. The seismogenic structure consists a NW‐SE elongated fault zone extending for about 40 km. focal mechanisms the largest shocks reveal normal faulting NE‐SW extension perpendicular to trend Apennines, consistently Quaternary tectonic setting internal sector belt previous earthquakes in adjacent regions. Preliminary data main...
Teleseismic traveltime data, recorded by temporary ocean bottom seismographs deployed in Tyrrhenian Sea around the Aeolian Islands (Tyrrhenian Deep‐sea Experiment (TYDE)), have been used for first time Italy to refine 3‐D model deep P wave velocity structure of southern subduction zone. The arrival times 35 teleseisms combined with those Italian National Network. In order obtain a more complete azimuthal coverage teleseismic rays, 80 events land stations from 1990 2002 included data set....
<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...
We analyse seismograms of the slump episodes at Stromboli on December 30, 2002. Using a simple single force model, we estimate volume involved in individual subevents and attempt chronological reconstruction whole process. Our results indicate occurrence two main events that could be interpreted as submarine slump, which caused observed tsunami, subaerial did not produce destructive sea waves. A total about 20 × 10 6 m 3 for event, developed over 2 minutes with several distinct detachments,...
In this study, we present a three‐dimensional P wave upper‐mantle tomography model of the southwest Iberian margin and Alboran Sea based on teleseismic arrival times recorded by Moroccan land stations seafloor network deployed for 1 year in Gulf Cadiz area during European Commission Integrated observations from NEAR shore sourcES Tsunamis: towards an early warning system (EC NEAREST) project. The was computed down to 600 km depth. tomographic images exhibit significant velocity contrasts, as...
A new 3‐D model for the P‐wave velocity structure of Southern Tyrrhenian Subduction Zone (STSZ) is determined from nonlinear inversion relative arrival times teleseismic events. The data used in imaging are travel time residuals both direct, P and PKP df secondary pP , sP PcP bc phases, computed with respect to global 1‐D ak135. 2308 waveforms were collected this study 109 events recorded by Italian National Seismic Network (RSNC) during 1988–1998. perturbation field reconstructed gradually...
Geophysical studies point to a complex tectonic and geodynamic evolution of the Alboran Basin Gulf Cadiz. Tomographic images show strong seismic waves velocity contrasts in upper mantle. The high anomaly beneath Sea recovered by number is now well established feature. Several reconstructions have been proposed also on base these images. We present elaborate results coming from recent tomography study which concentrates both adjacent Atlantic region. These new results, while they confirm...
We present new tomographic images for the P ‐wave velocity structure in upper mantle beneath central‐southern Apennines down to 510 km depth. The model is computed by nonlinear inversion of relative arrival times both direct and secondary teleseismic phases, handpicked from over 2800 waveforms recorded Italian seismic network during 1988‐2000. Beneath central Apennines, reveal a continuous, SW‐dipping high‐velocity body, ∼ 150 500 km. At shallower depths, pronounced low‐velocity zone...
The deployment of a temporary seismic network in Southern Italy during 2001-2004 (the SAPTEX array, APennine Tomography EXperiment) allowed us to relocate the hypocenters Apennines earthquakes with low uncertainty among location parameters. best array distribution for analysis seismicity Lucanian and foredeep was reached first two years recording. data were merged those Italian National Seismic Network (RSNC) operated by Istituto Nazionale di Geofisica e Vulcanologia (INGV). For computation...
Abstract [1] We study the seismic wavefield and statistical properties of Stromboli volcano explosions preceding during 2002–2003 crisis. analyze recordings a three-component seismometer operating since 23 May 2002 to 30 January 2003, including first 34 days Before crisis, we recognize three bell-shaped classes spectra with maxima falling in range 1–5 Hz. Spectral content has two main changes, most prominent one occurring at crisis onset when frequency peak ∼0.3 Hz increases amplitude....
High-quality teleseismic data digitally recorded by the National Seismic Network during 1988-1995 have been analysed to tomographically reconstruct aspherical velocity structure of upper mantle beneath Italian region. To improve quality and reliability tomographic images, both direct (P, PKPdf) secondary (pP,sP,PcP,PP,PKPbc,PKPab) travel-time were used in inversion. Over 7000 relative residuals computed with respect IASP91 Earth model inverted using a modified version ACH technique....
In this paper we look at changes of the statistics stationary explosive process a basaltic volcano as proxy for departures from thermodynamic equilibrium conditions in shallow plumbing system. Specifically, investigate explosion Stromboli that occurred during 2002–2003, 2006–2007 and 2010–2011. The first two periods were characterized by eruptions with significant lava effusion strong paroxysmal events, while last one shows persistent activity accompanied minor episodes flow. We use...