Enriching seismic network catalogues is a key object to understand the seismotectonic processes and hazard. In areas with poor knowledge of patterns, installation dense local networks essential. The enhanced density coverage improves detection events low energy. Nowadays, Machine Learning (ML) techniques are becoming widely used in seismology, addition standard automatic procedures (i.e., STA/LTA-based algorithms).In this study, we assess performance P- S-wave picking earthquake algorithms...

In addition to the more common elastic crustal imaging, investigation of attenuation properties is a pivotal task for gaining insights into geological complexities study area. Indeed, availability scattering and absorption images may allow defining extension both highly fractured regions in seismogenic volumes presence fluids, along with their possible role seismic activity target areas. Furthermore, imaging fluid saturated rock could be significant clue about geothermal potential areas.Our...

This study proposes an integrated methodology to investigate hydrogeological instability, combining remote sensing with in-situ geophysical surveys in Gorgoglione, a small town Basilicata, southern Italy, located low mountain area (~800 m a.s.l.). The Italian Apennines, where Gorgoglione is situated, are highly susceptible geomorphological instability due the interplay of lithology, relief morphology, active tectonics, seismicity, climate, and vegetation. In recent decades, land abandonment...

The WP7 - GEOSPHERE-LANDSURFACE of the ITINERIS project (Italian Integrated Environmental Research Infrastructures System, PNRR M4C2 Inv.3.1 IR), funded by European Union – Next Generation EU, aims to provide openly accessible digital data on solid Earth scientific community, public, and decision-makers in line with Digital concept.Specifically, Activity 7.4 is dedicated developing an integrated multi-scale, multi-resolution, multi-sensor approach for characterizing surface,...

The current Italian guidelines dedicated to monumental assets do not delve into issues related the characterization of overall above-soil system and enhancement archaeological structures buried below asset. Furthermore, for seismic microzonation focus only on seismotectonic, lithostratigraphic geotechnical surface soils, completely neglecting presence built environment. Ground motion structural response environment are treated separately. This aspect can be significantly limiting in historic...

Fluid injection activities cause pore pressure perturbations within the reservoir's rocks, which can potentially trigger fractures, faults failures, and alter elastic properties of surrounding rocks. Thus, monitoring stress conditions reservoir medium evolution around wells, is crucial for hazard assessment in areas.We present a rock physics-based approach using induced micro-seismicity to track temporal from  Vp/Vs ratio variations. Additionally, focal mechanisms analysis (BISTROP,...

As part of structural and infrastructure health monitoring, we propose a rapid non-invasive experimental geophysical survey to determine the key parameters an infrastructure. This approach involves simultaneous acquisition 20 minutes seismic ambient noise using arrays strategically placed at various points structure. These acquisitions do not require diverting or blocking traffic flow, nor does it disrupt operation road infrastructure.The acquired signals are analyzed techniques, including...

This study analyzes the temporal dynamics of instrumental seismicity recorded in Pertusillo reservoir area (Southern Italy) between 2001 and 2018. The Gutenberg–Richter analysis frequency–magnitude distribution reveals that seismic catalog is complete for events with magnitudes M≥1.1. time-clustering sequence at both global local levels a coefficient variation Cv Lv significantly beyond 95% confidence band. Allan Factor method, applied to series earthquake occurrence times, corroborates...

Seismic tomography can be used to image the spatial variation of rock properties within complex geological media such as volcanoes. Solfatara is a volcano located Campi Flegrei, still active caldera, so it major importance characterize its level activity and potential danger. In this light, 3D tomographic high-resolution P-wave velocity shallow central part crater obtained using first arrival times multiscale approach. The retrieved images, integrated with resistivity section temperature CO2...

The accurate characterization of microearthquake sequences allows seismologists to better understand the physical processes involved in earthquake nucleation and rupture propagation gain insights on fault geometry at depth. Standard procedures for seismic analysis are based manual detection phase-picking, requiring a huge amount work from expert seismologists, particularly case microseismic events. Here we show how investigation low-magnitude foreshock-mainshock-aftershock sequence, occurred...

Abstract Fluid‐induced seismicity has been a particularly emphasized mechanism over the last few years, especially after fluid‐related, moderate‐to‐large earthquakes have observed in several locations around globe. Several studies suggest that relationships between and fluid presence are related to variations stress state of rocks, due increase or drop pore pressure. In this scenario, Val d’Agri represents precious case study where fluid‐induced is observed. area, two seismic clusters...

Abstract. The High Agri Valley is a tectonically active area in southern Italy characterized by high seismic hazard related to fault systems capable of generating up M=7 earthquakes (i.e. the 1857 Mw=7 Basilicata earthquake). In addition natural seismicity, two different clusters induced microseismicity were recognized be caused industrial operations carried out area: (1) water loading and unloading Pertusillo artificial reservoir (2) wastewater disposal at Costa Molina 2 injection well....

Abstract Improving the capability of seismic network to detect weak events is one timeless challenges in seismology: greater number detected and locatable events, insights on mechanisms responsible for activation may be gained. Here we implement apply a single-station template matching algorithm belonging fluid-injection induced seismicity cluster located High Agri Valley, Southern Italy, using continuous data stream closest station INSIEME network. To take into account diversity waveforms,...

Abstract To improve the knowledge of shallowest subsurface Campi Flegrei caldera, a 3‐D P wave attenuation tomography area was performed. We analyzed about 18,000 active seismic traces, which provided data set 11,873 Δ t * measurements, e.g., differential travel times to quality factor ratios. These were inverted through an adapted tomographic inversion procedure. The images reveal average Q 70, interpreted as water‐saturated volcanic and marine sediments. An arc‐like, low‐ structure at...

An integrated geophysical approach using non-invasive, non-destructive, and cost-effective seismic electromagnetic techniques has been implemented to recognize the static dynamic properties (i.e. eigenfrequencies, equivalent viscous damping factors, related modal shapes) of Gravina Bridge its interaction with foundation soils. The “Gravina” is a bow-string bridge located on outcropping calcarenites in city Matera (Southern Italy) develops for 144 m along steel-concrete deck. soil...

Local earthquake tomography allows to both image the subsurface elastic properties of an area and locate earthquakes. In this work, we discuss choice best parameterization in a tomographic model influence retrieved velocity models on accuracy location High Agri Valley, southern Italy. The inversions were carried out with two datasets (dataset A dataset B). Dataset B was obtained by integrating data recorded very dense seismic network deployed around specific cluster seismicity. Velocity from...

Imaging of fluid pathways is crucial to characterize processes taking place in hydrothermal systems, a primary cause volcanic unrest and associated hazards. The joint imaging seismic absorption scattering an efficient instrument map flow at crustal scale, specifically volcanoes; however, this technique has so far been applied image volcanoes systems the kilometre scale. Here, we use data from meter-scale, active survey inside shallow structure Solfatara crater obtain first...

A geophysical approach, based on the integration of satellite differential interferometric SAR technique and in situ geoelectrical seismic methods, was applied with aim to characterize a portion urban area Avigliano (PZ) town Basilicata Region (southern Italy) affected by ground instability phenomena. Satellite analysis helped discriminate areas superficial deformations monitor dynamic behaviour structures located these areas. Results from (active passive) methods were compared direct data...

We investigate the spatiotemporal evolution of ground motion caused by reservoir-induced seismicity at Pertusillo artificial lake in southern Italy. The area has a strong seismogenic potential, having been affected past 1857, Mw 7.0 Basilicata earthquake. consider ∼1,000 microearthquakes that occurred from 2001 to 2018 and were recorded local network nine seismic stations. intensity associated with microseismicity allows us identify two periods, each lasting approximately 2 years. They are...

The quality factor Q is highly sensitive to the medium properties related fluid presence, like porosity, permeability and level of rock saturation. Therefore, it very useful image subsoil volcanoes in terms anelastic images, addition more common elastic tomographic models. In this geological structure, indeed, fluids play a key role controlling governing evolution magmatic processes, so their accurate identification tracking crucial. Here, we describe methodology that allows obtain 1-D 3-D...

High Agri Valley is an intermontane basin of the axial portion Southern Apennines (Southern Italy), characterized by a very strong seismogenic potential. Indeed,  Mw=7.0  earthquake occurred in 1857. Currently, seismic networks managed ENI Oil Company and INGV, installed area, continuously record low-magnitude natural seismicity. Furthermore, two anthropogenic clusters are documented distinct sectors valley, located NE SW artificial Pertusillo lake, respectively. The first...