Andrea Morelli
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View article: A state-of-the-art analysis system designed to monitor microseismicity at a local scale
A state-of-the-art analysis system designed to monitor microseismicity at a local scale Open
In this paper, we review the procedures involved in establishing a contemporary workflow for real-time microseismic monitoring using a local-scale seismographic network. We draw on our specific experience in monitoring potentially induced …
View article: Trans-dimensional Mt. Etna P-wave anisotropic seismic imaging
Trans-dimensional Mt. Etna P-wave anisotropic seismic imaging Open
Trans-dimensional inference identifies a class of methods for inverse problems where the number of free parameters is not fixed. In seismic imaging these methods are applied to let the data, and any prior information, decide the complexity…
View article: Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data Open
Rayleigh wave ellipticity measurements from seismic ambient noise recorded on the Greenland Ice Sheet (GrIS) show complex and anomalous behavior at wave periods sensitive to ice ( T < 3–4 s). To understand these complex observations, we co…
View article: Extraction and applications of Rayleigh wave ellipticity in polar regions
Extraction and applications of Rayleigh wave ellipticity in polar regions Open
Seismic Rayleigh wave ellipticity measurements are the horizontal-to-vertical ratio of the Rayleigh wave particle motion, and are sensitive to the subsurface structure beneath a seismic station. H/V ratios measured from the ambient vibrati…
View article: Slab Geometry and Upper Mantle Flow Patterns in the Central Mediterranean From 3D Anisotropic <i>P</i> ‐Wave Tomography
Slab Geometry and Upper Mantle Flow Patterns in the Central Mediterranean From 3D Anisotropic <i>P</i> ‐Wave Tomography Open
We present the first three‐dimensional (3D) anisotropic teleseismic P ‐wave tomography model of the upper mantle covering the entire Central Mediterranean. Compared to isotropic tomography, it is found that including the magnitude, azimuth…
View article: VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model*
VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model* Open
We present a strong lensing analysis of the galaxy cluster SDSS J1029+2623 at z = 0.588, one of the few currently known lens clusters with multiple images of a background ( z = 2.1992) quasar with a measured time delay. We use archival Hub…
View article: Practical Issues in Monitoring a Hydrocarbon Cultivation Activity in Italy: The Pilot Project at the Cavone Oil Field
Practical Issues in Monitoring a Hydrocarbon Cultivation Activity in Italy: The Pilot Project at the Cavone Oil Field Open
In this paper we describe the results of an experimental implementation of the recent guidelines issued by the Italian regulatory body for monitoring hydrocarbon production activities. In particular, we report about the pilot study on seis…
View article: VLT/MUSE observations of SDSS J1029+2623: towards a high-precision strong lensing model
VLT/MUSE observations of SDSS J1029+2623: towards a high-precision strong lensing model Open
We present a strong lensing analysis of the galaxy cluster SDSS J1029+2623 at $z=0.588$, one of the few currently known lens clusters with multiple images of a background ($z=2.1992$) quasar with a measured time delay. We use archival Hubb…
View article: ANTASed – An Updated Sediment Model for Antarctica
ANTASed – An Updated Sediment Model for Antarctica Open
We compile existing seismic, gravity, radar and magnetic data, together with the subglacial bedrock relief from the BEDMACHINE project, to build the most detailed sediment model for Antarctica. We interpolate these data according to a tect…
View article: Can Hydrocarbon Extraction From the Crust Enhance or Inhibit Seismicity in Tectonically Active Regions? A Statistical Study in Italy
Can Hydrocarbon Extraction From the Crust Enhance or Inhibit Seismicity in Tectonically Active Regions? A Statistical Study in Italy Open
A number of oil- and gas-producing leases have been operating in Italy in the last decades, many of which are located in the surroundings of tectonically active regions. Identifying human-induced seismicity in areas with high levels of nat…
View article: Seasonal variation of the Rayleigh component in the microseismic wavefield from ellipticity measurements
Seasonal variation of the Rayleigh component in the microseismic wavefield from ellipticity measurements Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…
View article: Effect of Groundwater on Noise-Based Monitoring of Crustal Velocity Changes Near a Produced Water Injection Well in Val d'Agri (Italy)
Effect of Groundwater on Noise-Based Monitoring of Crustal Velocity Changes Near a Produced Water Injection Well in Val d'Agri (Italy) Open
We study the crustal velocity changes occurred at the restart of produced water injection at a well in the Val d'Agri oil field in January–February 2015 using seismic noise cross-correlation analysis. We observe that the relative velocity …
View article: Can hydrocarbon extraction from the crust enhance or inhibit seismicity in tectonically active regions? A statistical study in Italy
Can hydrocarbon extraction from the crust enhance or inhibit seismicity in tectonically active regions? A statistical study in Italy Open
A number of oil- and gas-producing leases have been operating in Italy in the last decades, many of which are located in the surroundings of tectonically active regions. Identifying human-induced seismicity in areas with high levels of nat…
View article: Mapping the topography beneath the southern Martian polar cap using MARSIS high-resolution data
Mapping the topography beneath the southern Martian polar cap using MARSIS high-resolution data Open
<p>The ESA Mars Express mission was launched in June 2003 and reached Martian orbit in December of the same year. Among the instruments onboard, the Italian-American radar MARSIS has retrieved valuable data, therefore contributing ma…
View article: Culture and the youngest. Insights for the future of cultural consumption from an Italian sample
Culture and the youngest. Insights for the future of cultural consumption from an Italian sample Open
The paper explores the cultural consumption of teenagers, seen as consumers not yet independent from an economic point of view, but already independent in the choice and tastes. Our results apply to a sample of about 350 students living in…
View article: Evidences of high diffusivity near a waste water injection well in the Val d&#8217;Agri oil field (Italy) from noise-based monitoring
Evidences of high diffusivity near a waste water injection well in the Val d’Agri oil field (Italy) from noise-based monitoring Open
<p>We monitor the relative variations of crustal velocity during a stop of water injection at the Val d&#8217;Agri oilfield (Italy) in January-February 2015 from the analysis of the ambient seismic noise cross-correlations. This …
View article: Ground Motion Prediction Equations for shallow, small-magnitude events: application to the Mirandola-Cavone oil field
Ground Motion Prediction Equations for shallow, small-magnitude events: application to the Mirandola-Cavone oil field Open
<p>Ground motion prediction equations (GMPEs) based on data collected on hydrocarbon extraction areas have to deal with lower magnitude and smaller distances compared to the natural seismicity. This study focuses on the Mirandola-Cav…
View article: Constraining subglacial geology using ambient noise Rayleigh wave ellipticity
Constraining subglacial geology using ambient noise Rayleigh wave ellipticity Open
<p>Basal slip is an important mechanism by which glaciers and ice-sheets flow, and is a major source of uncertainty in simulations of ice-mass loss and sea level rise from the Greenland Ice Sheet (GrIS). Sub-ice geology is a dominant…
View article: Constraining<i>S</i>-wave velocity using Rayleigh wave ellipticity from polarization analysis of seismic noise
Constraining<i>S</i>-wave velocity using Rayleigh wave ellipticity from polarization analysis of seismic noise Open
We develop a new method for measuring ellipticity of Rayleigh waves from ambient noise records by degree-of-polarization (DOP) analysis. The new method, named DOP-E, shows a good capability to retrieve accurate ellipticity curves separated…
View article: Cost Action ES1401 TIDES: looking into time-dependent changes of the Earth's properties using seismology
Cost Action ES1401 TIDES: looking into time-dependent changes of the Earth's properties using seismology Open
Seismology is undergoing a revolution, as it is starting to use the full-length records of seismic events and background
\nambient noise to go beyond still-life snapshots of the interior of the Earth, and look into time-dependent
\nchanges…