A5072517940- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Earthquake Detection and Analysis
- Seismic Performance and Analysis
- Seismic Waves and Analysis
- Structural Health Monitoring Techniques
- Masonry and Concrete Structural Analysis
- Geophysics and Sensor Technology
- Structural Engineering and Vibration Analysis
- DNA and Nucleic Acid Chemistry
- Landslides and related hazards
- Anomaly Detection Techniques and Applications
- Nuclear and radioactivity studies
- Echinoderm biology and ecology
- Marine Biology and Environmental Chemistry
- Geological formations and processes
- High-pressure geophysics and materials
- Time Series Analysis and Forecasting
- Geotourism and Geoheritage Conservation
- Genomics and Chromatin Dynamics
- GNSS positioning and interference
- Geological and Geochemical Analysis
- Geological and Tectonic Studies in Latin America
- Insect Resistance and Genetics
- Geology and Paleoclimatology Research
Institut de Radioprotection et de Sûreté Nucléaire
2012-2024
École Normale Supérieure - PSL
2011-2012
Centre National de la Recherche Scientifique
2011-2012
Laboratoire de Géologie de l’École Normale Supérieure
2010
Istituto Nazionale di Geofisica e Vulcanologia
2008-2010
University of Naples Federico II
2006-2010
École Normale Supérieure
2009
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2007
Institute of Genetics and Biophysics
1979-1980
Rupture kinematics of this very large earthquake were obtained from high-resolution Global Positioning System data.
We show that the low‐pass filtered, peak amplitudes of initial P‐ and S‐wave seismic signals recorded in vicinity an occurring earthquake source correlates with magnitude may be used for real‐time estimation event size early warning applications. The can therefore estimated using only a couple seconds signal from or onsets, i.e. while rupture itself is still propagating dimension far complete. argue dynamic stress release and/or slip duration on fault very stage fracture, scales both...
Most earthquake early warning systems (EEWS) developed so far are conceived as either ‘regionaL‘ (network-based) or ‘on-site’ (stand-alone) systems. The recent implementation of nationwide, high dynamic range, dense accelerometer arrays makes now available, potentially in real time, unsaturated waveforms moderate-to-large magnitude earthquakes recorded at very short epicentral distances (<10–20 km). This would allow for a drastic increase the lead-time, example, time between alert...
We investigate the effect of extended faulting processes and heterogeneous wave propagation on early warning system capability to predict peak ground velocity (PGV) from moderate large earthquakes occurring in southern Apennines (Italy). Simulated time histories at network have been used retrieve estimates source parameters PGV, following an evolutionary, probabilistic approach. The performance is measured through Effective Lead‐Time (ELT), i.e., interval between arrival first S‐wave which...
From inspection of a large set Japanese events, we investigate the scaling early radiated energy, inferred from squared velocity integral ( IV 2) with final magnitude event. We found that energy can only discriminate whether event has larger or smaller than 5.8, and in latter case it allow for real‐time estimation. However, by normalizing 2 rupture area, initial slip scales between 4 < M 7 following expected laws. show ratio peak displacement is proxy same but be directly derived data,...
It has been shown that the initial portion of P and S wave signals can provide information about final earthquake magnitude in a wide range. This observation opens perspective for real‐time determination source parameters. In this paper we describe probabilistic evolutionary approach estimation which have potential use early warning. The technique is based on empirical prediction laws correlating low‐frequency peak ground displacement measured few seconds after and/or phase arrival event...
We study the scaling of spectral properties a set 68 aftershocks 2007 November 14 Tocopilla (M 7.8) earthquake in northern Chile. These are all subduction events with similar reverse faulting focal mechanism that were recorded by homogenous network continuously recording strong motion instruments. The seismic moment and corner frequency obtained assuming satisfy an inverse omega-square decay; radiated energy is computed integrating square velocity spectrum corrected for attenuation at high...
The 2010 Maule earthquake is one of the largest events ever recorded with modern instruments. We used continuous GPS (cGPS) records to invert for kinematic rupture process using an elliptical sub-patch approximation. In agreement previous inversions, slip found in northern part zone. By cross-correlating signals from cGPS and strong motion (SM) located zone, we identified two distinct seismic pulses. Using arrival time these pulses, propose a short-period (<20 s) process, zone where...
We study the distribution of aftershocks Tocopilla Mw 7.7 earthquake 2007 November 14 in northern Chile detail. This broke lower part seismogenic zone at southern end Northern gap, a region that had its last megathrust 1877. The occurred several steps: first day they were located along coast inside co-seismic rupture zone. After second extended ocean-wards near Mejillones peninsula. Finally December concentrated South future Michilla intermediate depth 16. aftershock sequence was recorded by...
[1] Based on the analysis of Mediterranean, near-source, strong motion records Zollo et al. [2006] (hereinafter referred to as ZLN) showed that peak displacement amplitudes initial P- and S-wave seismic signals scales with earthquake size in moment magnitude range 4 < Mw 7.4. Similar evidence have been also reported for southern California [Wu Zhao, 2006] Taiwan al., using only P-wave arrivals up 100 km distance mostly short period broadband waveform data. [2] As discussed by ZLN, these...
We studied the correlation between final event magnitude and four parameters obtained from early portion of P S phases for a set high quality subduction events.These relationships are used in framework earthquake earlywarning systems real-time estimation.The investigated low-pass-filtered peak displacement (PD), integral velocity squared (IV2), predominant characteristic periods (τ p τ c ).We created dataset continuous records first two weeks following 14 November 2007 M w 7.8 Tocopilla...
Research Article| May 22, 2018 Spectral Matching in Time Domain: A Seismological and Engineering Analysis Maria Lancieri; Lancieri aInstitut de Radioprotection et Sûreté Nucléaire (IRSN), PSE‐ENV/SCAN/BERSSIN, 31, avenue la Division Leclerc, BP 17, 92262 Fontenay‐aux‐Roses, CEDEX, France, maria.lancieri@gmail.com Search for other works by this author on: GSW Google Scholar Paolo Bazzurro; Bazzurro bIstituto Universitario di Studi Superiori (IUSS), Palazzo del Broletto, Piazza della Vittoria...
[1] We present an evolutionary approach for magnitude estimation earthquake early warning based on real‐time inversion of displacement spectra. The Spectrum Inversion (SI) method estimates and its uncertainty by inferring the shape entire spectral curve part spectra constrained available data. consists two components: 1) estimating seismic moment finding low frequency plateau W0, corner fc attenuation factor (Q) that best fit observed assuming a Brune w 2 model, 2) estimate moment. A novel...
Abstract In situ characterization of structural behaviour under seismic hazard provides an opportunity to acquire experimental data that improve our understanding soil-structure interaction (SSI). Experimental programs such as Lotung and Hualien in Taiwan, EuroProteas Greece NUPEC Japan, are amongst the most known. Such investigations aim at studying a structure with rigid shallow raft measuring impedance functions soil-foundation interface. Indeed, by far widely used tools study SSI. this...