A5017741128- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- earthquake and tectonic studies
- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Geophysics and Sensor Technology
- Advanced Semiconductor Detectors and Materials
- Earthquake Detection and Analysis
- Polymer crystallization and properties
- CCD and CMOS Imaging Sensors
- Particle Detector Development and Performance
- Time Series Analysis and Forecasting
- Radiation Detection and Scintillator Technologies
- High-pressure geophysics and materials
- Polymer Science and PVC
- Reservoir Engineering and Simulation Methods
- Particle physics theoretical and experimental studies
- Polymer Nanocomposites and Properties
- Algal biology and biofuel production
- Plant and soil sciences
- Laser and Thermal Forming Techniques
- Metallurgy and Material Forming
- Biodiesel Production and Applications
- Inertial Sensor and Navigation
Institut des Sciences de la Terre
2021-2024
Centre National de la Recherche Scientifique
2023-2024
Université Grenoble Alpes
2022-2024
Université Gustave Eiffel
2021-2024
Institut de Recherche pour le Développement
2023
Université Savoie Mont Blanc
2023
Max Planck Institute for Physics
2010
The ATLAS detector has been designed for operation at the Large Hadron Collider CERN. includes electromagnetic and hadronic liquid argon calorimeters, with almost 200,000 channels of data that must be sampled LHC bunch crossing frequency 40 MHz. calorimeter electronics calibration readout are performed by custom developed specifically these purposes. This paper describes system performance electronics, including noise, energy time resolution, long term stability, taken mainly from...
Detecting seismic events is essential for monitoring tectonic and volcanic activity, especially in marine environments where noise makes analysis particularly challenging. This study introduces a method that combines Evolutionary Neural Architecture Search (ENAS) with the third generation of Non-dominated Sorting Genetic Algorithm (NSGA-III) to design optimize neural networks event detection using Ocean Bottom Seismometers (OBS) data.In this work we developed methodology analyze heavily...
SUMMARY Analysis of long recordings ambient seismic noise has shown to be effective for estimation responses between points located on the surface. This includes both ballistic and coda part waveforms. Passive image interferometry is used analyse perturbations in reconstructed coda, detect locate changes medium. method been monitoring variations velocity produced by a wide range phenomena. However, localization sources these still an open problem 3-D half-space, given difficulties...
Abstract Velocity variations obtained from ambient seismic noise are sensitive to many factors. We aimed disentangle these processes in a 10‐year‐long recording of single station the Pollino region, southern Italy. This region is characterized by aquifers and relatively short period high activity that included slow slip events earthquake occurred on October 25, 2012. apply two models estimate water level inside an aquifer, which show good correlation with measured , showing velocity...
Abstract Extended and sufficiently dense seismic networks capture spatiotemporal properties of the continuously recorded wavefields can be used to compute level their coherence at different frequencies via analysis network covariance matrix, which has been successfully study volcanic seismicity. Here, we present an application matrix method in a subduction zone environment. We show that most coherent signals identified through are related regional earthquakes with wavefield affected by...
Continuous seismic signals recorded in the vicinity of active volcanoes are composed waves generated by a variety internal and environmental sources propagating through different parts plumbing system. This implies that these very sensitive to state A change volcanic activity affects properties seismo-volcanic while structure media which propagate. Network-based analysis continuous records has been developed incorporate information from multiple stations simultaneously. Here we use an...
We present observations showing that during episodes of volcanic tremors, the phase inter-station cross-correlations becomes stable. propose a new quantity, coherence, to identify differential stability in recordings obtained from single pair stations, which is extrapolated seismic network. Then, we approach based on estimation travel times through measurements, locate sources tremors occurring at end 2015 Klyuchevskoy Volcanic Group Kamchatka, Russia. evidence supporting existence two types...
Abstract We present observations showing that during episodes of volcanic tremors, the phase inter‐station cross‐correlations becomes stable. propose a new quantity, coherence, to identify differential stability in recordings obtained from single pair stations, which is extrapolated seismic network. Then, we approach based on estimation travel times through measurements, locate sources tremors occurring at end 2015 Klyuchevskoy Volcanic Group Kamchatka, Russia. evidence supporting existence...
We present results from the characterization of a vertically stacked amorphous selenium (aSe)-based photodetector for use in cryogenic environments. aSe has been identified as an ideal photoconductor that can efficiently convert vacuum ultraviolet (VUV) light to charges even at temperatures. have designed and fabricated device vertical geometry with top bottom metal electrodes produces electric field perpendicular substrate. The top-metal contact open design large fraction thin film surface...
Volcanoes are multi-physics systems where different phenomena interact, such as magma transport, degassing, crystallization, and pressure-induced faulting. These interactions create a series of seismic signals, among which we have volcano-tectonic earthquakes, long-period events, volcanic tremors. Thanks to these there has been an improvement in the comprehension systems. However, due its complexity, is still debate regarding observed i.e., their precise origin characteristics. In past, some...
The analysis of highly coherent seismic signals produced during tremor episodes has been recently gained interest as a mean to study the structure volcanic systems, and underlying physical mechanism producing its activity. Volcanic usually appear with non-impulsive gradual onset can last for long periods time, ranging from hours months, which individual waves cannot be recognized. lack identifiable arrivals duration registered signals, renders ineffective classical methods based on travel...
<p>The ambient seismic noise has proven to be a powerful tool assess velocity changes within the ground using coda-wave interferometry (CWI). CWI is based on analysis of small waveform in coda signals. Localizing and imaging source that generates can done with help sensitivity kernels which contain information how each part surrounding medium contributes overall perturbation recorded at receiver. Although progress been made theory case full elastic space,  the...
<p>Low-frequency seismic tremors and earthquakes play an important role in the understanding of processes occurring seismogenic fault zones volcanic systems. The covariance matrix, a method that analyses spatial coherence continuous noise records on surface, has proven to be efficient tool detect localize seismovolcanic processes, allowing classification between local earthquakes, tremors, low-frequency earthquakes. We use this analysis tectonic activity region Shikoku, Japan,...