A5070941433- Seismic Waves and Analysis
- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Seismic Imaging and Inversion Techniques
- Geological Formations and Processes Exploration
- Structural Health Monitoring Techniques
- Seismic Performance and Analysis
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Landslides and related hazards
- Marine and environmental studies
- Advanced Banach Space Theory
- Holomorphic and Operator Theory
- Methane Hydrates and Related Phenomena
- Research Data Management Practices
- Approximation Theory and Sequence Spaces
- Fixed Point Theorems Analysis
- Distributed and Parallel Computing Systems
- Food Supply Chain Traceability
- Geophysical Methods and Applications
- History and Theory of Mathematics
- Geological and Tectonic Studies in Latin America
- Archaeological Research and Protection
- Geophysics and Sensor Technology
Institutul National de Cercetare si Dezvoltare pentru Fizica Pamantului
2012-2024
Queen's University Belfast
2010-2013
Ollscoil na Gaillimhe – University of Galway
2004
Seismic background noise dramatically decreased as a result of lockdown measures in place for mitigating the spread COVID-19.
Climate change is increasing the frequency and severity of extreme weather events, presenting substantial risksto both natural constructed settings. In seismically active areas, interplay between climate-induced events geophysical processes may intensify seismic hazards, affecting essential infrastructure ecosystems. The complex project "Competence Center for Change Digital Twin Earth forecasts societal redressement: DTEClimate", funded within framework National Recovery Resilience Plan...
We use ambient noise tomography to investigate the crust and uppermost mantle structure beneath Carpathian–Pannonian region of Central Europe. Over 7500 Rayleigh wave empirical Green's functions are derived from interstation cross-correlations vertical component seismic recordings (2005–2011) using a temporary network 54 stations deployed during South Carpathian Project (2009–2011), 56 in Basins (2005–2007) 100 permanent regional broad-band stations. group velocity dispersion curves (4–40 s)...
Abstract The aim of this article is to analyze the background, current status, and outlook seismic monitoring products services in Bulgaria, Moldova, Romania, Ukraine. These countries manage networks that contribute European Integrated Data Archive node framework Observatories Research Facilities for Seismology, which represents a collaborative effort coordinating observational seismology across region through collection, archiving, dissemination waveform data, metadata, related products....
Abstract New aspects of the frequency-dependent attenuation seismic waves travelling from Vrancea subcrustal sources toward NW (Transylvanian Basin) and SE (Romanian Plain) are evidenced by recent experimental data made available CALIXTO'99 tomography experiment. The observations validate previous theoretical computations performed for assessment, means a deterministic approach, hazard in Romania. They reveal an essential aspect ground motion that has important implications on probabilistic...
Abstract. The purpose of this paper is to study the interaction Vrancea seismic activity (Romania) in space as result Coulomb, static stress transfer during M=7+ events. In area, three large events occurred 1977, 1986 and 1990 at mid-lower, lithospheric depths with similar focal mechanisms. Assuming elastic rheology for deforming rocks it suggested that frictional sliding on pre-existing fault produced M=7.1 event (depth 131 km), was possibly triggered by 1977 M=7.4 94 km). We calculated a...
The paper presents results from an experimental program implemented for three representative buildings in Bucharest metropolitan area and aimed to explore the potential of various dynamic identification methods providing information about building state changes. objective is establish reference values use rapid earthquake damage detection systems. Each selected was designed according a different seismic code, force at time its construction. employed this study were: analysis Fourier spectra,...
We study the classes of homogeneous polynomials on a Banach space with unconditional Schauder basis that have unconditionally convergent monomial expansions relative to this basis. extend some results Matos, and we show coincide are regular respect lattices structure domain.
The structure and processes of collisional orogens at the edges cratons are complex extent to which crust is affected by subduction cratonic material, slab break-off post-collisional magmatism poorly constrained. Carpathian arc an Alpine orogenic system, involving collision East European Craton closure Tethys ocean. Unusual Neogene backarc developed after ended ∼9 Ma ago upper-mantle Mw>7 earthquakes associated with a relic actively breaking-off in Vrancea Zone. To investigate crustal...
This work presents a case study of geoelectrical exploration understudied mud volcanoes in Romania, specifically the Pâclele Mici volcano from Buzău County. Using technique facilitated by distributed network V-FullWaver equipment, we present, to our knowledge, first deep 3D country. The findings indicate that while surveys such environments are met with important challenges terms soil conductivity, they nonetheless provide viable approach uncovering complex structures and processes...
The noise level of the Romanian broadband stations operating since 2006 has been studied in order to identify variations background seismic as a function time day, season, and particular conditions at stations. Power spectral densities their corresponding probability density functions are used this paper characterize noise. At high frequencies (> 1 Hz), seems have cultural origin, significant (up 55 dB) between daytime nighttime levels observed almost all However, variability appears not...
Abstract. After the World Health Organization declared COVID-19 a pandemic in March 2019, Romania followed example of many other countries and imposed series restrictive measures, including restricting people's mobility closing social, cultural industrial activities to prevent spread disease. In this study, we analyze continuous vertical component recordings from stations Romanian Seismic Network – one largest networks Europe containing 148 explore detail seismic noise variation associated...
SUMMARY The Eastern-Europe region (EER), is a complex geotectonic area that captures part of the Alpine-Himalayan Orogen, subduction multiple NeoTethys Branches and East European Craton. It one most exciting geological areas in Europe due to diversity tectonic processes acting within it: extensional basin evolution, oceanic subduction, post-collisional volcanism, as well active crustal deformation associated with push Adria plate or pull actively detaching Vrancea slab. This makes EER an...
Abstract. After the World Health Organization declared COVID-19 a pandemic in March 2020, Romania followed example of many other countries and imposed series restrictive measures, including restricting people's mobility closing social, cultural, industrial activities to prevent spread disease. In this study, we analyze continuous vertical component recordings from stations Romanian Seismic Network – one largest networks Europe, consisting 148 explore seismic noise variation associated with...
The seismic instrumentation of structures in order to assess their condition and track it over long periods or after representative events has proven be a topic large interest, under continuous development at international level. hazard Romania poses one the most dangerous threats for country, terms potential physical socio-economic losses. In recent years, taking advantage new scientific technological advances, among which exponential growth computational resources, significant improvements...
We present a short review of the most recent results coming from numerical modeling seismic hazard and interpretation new observations provided by recently installed stations in Romania. There are still controversial questions related to asymmetric distribution ground motion radiated Vrancea intermediate-depth earthquakes which is main factor responsible for this particular distribution: source, structural model, site effects or vulnerability. Our goal provide solution key problem, with...