Abstract The aim of this work is to estimate the fundamental translational frequencies and relative damping a large number existing buildings, performing ambient vibration measurements. first part devoted comparison results obtained with microtremor measurements those from earthquake recordings using four different techniques: horizontal‐to‐vertical spectral ratio, standard non‐parametric analysis (NonPaDAn) half bandwidth method. We recorded local earthquakes on five floors reinforced...

The aim of this work is to verify if (1) the average shear-wave velocity from surface 30 m depth (VS30) a good proxy site amplification in country with complex geology like Italy, (2) grouping VS30 different soil classes and relevant spectra Italian seismic codes adequate, (3) shallow profiles (VS10) could be more economical tool for classification. To answer first two questions, we examined 40 estimates derived microzonation projects performed Italy (27 obtained downhole measurements, plus...

Abstract. Recent observations have shown that slope response to seismic shaking can be characterised by directional variations of a factor 2–3 or larger, with maxima oriented along local topography features (e.g. maximum direction). This phenomenon appears influenced material properties and has occasionally been detected on landslide-prone slopes, where down-slope directed amplification could enhance susceptibility seismically-induced landsliding. The exact conditions for the occurrence...

This letter aims at analyzing the potentialities of ground-based microwave radar interferometry technique for dynamic characterization civil infrastructures. has been applied to estimate fundamental parameters reinforced concrete Musmeci bridge in Basilicata region (southern Italy). The results have validated by comparison with ones obtained applying consolidated techniques using data from accelerometers and tromometers. good agreement could suggest joint application such as a new...

Abstract. The aim of this paper is an empirical estimation the fundamental period reinforced concrete buildings and its variation due to structural non-structural damage. 2009 L'Aquila earthquake has highlighted mismatch between experimental data code provisions value not only for undamaged but also damaged ones. 6 April provided first opportunity in Italy estimate (RC) after a strong seismic sequence. A total 68 with different characteristics, such as age, height damage level, have been...

Abstract. In the frame of a national project funded by Eni S.p.A. and developed three institutes National Research Council (the Institute Methodologies for Environmental Analysis, Hydrogeological Protection Electromagnetic Sensing Environment), multidisciplinary approach based on integration satellite, aero-photogrammetric in situ geophysical techniques was applied to investigate an area located Montemurro territory southeastern sector High Agri Valley (Basilicata Region, southern Italy)....

A methodological approach based on the integration of different survey techniques may be particularly suitable for study areas with complex geology such as those affected by landslide phenomena. The results obtained application combined electrical resistivity tomography (ERT) technique, ambient seismic noise measurements (single station and array), geological investigation granulometric analysis to characterize a occurred December 3rd, 2013 in Basilicata region (southern Italy) are presented...

SUMMARY The horizontal to vertical spectral ratio (HVSR) technique of microtremor measurement is widely applied in microzonation and site response studies. Given the small amplitude measured signal, unwanted disturbances may adversely affect results. We analysed influence local wind on measurements as follows: first, we studied variation HVSR at a permanent, three-component seismological station under various patterns; second, conducted an experiment controlled condition room equipped...

Abstract Structural health monitoring (SHM) aims to improve knowledge of the safety and maintainability civil structures. The usage recording systems exploiting wireless communication technology is particularly suitable for SHM, especially rapid response following earthquakes. In this study, both these issues are combined, we report on application seismic interferometry SHM using a dataset seven earthquakes collected novel system accelerometers during L’Aquila, Italy, sequence in 2009. We...

Abstract FRIBAS database is an open access ( https://doi.org/10.5281/zenodo.6505442 ) composed of the characteristics 312 buildings (71 masonry, 237 reinforced concrete and 4 mixed types). It collects harmonizes data from different surveys performed on in Basilicata Friuli Venezia Giulia regions (Southern Northeastern Italy, respectively). Each building defined by 37 parameters related to foundation soil characteristics. The fundamental periods were experimentally estimated based ambient...

Predicting ground motion over large areas seems to be the frontier in enhancement of seismic hazard maps at national level. Simplified approaches based on 1D numerical simulations have gained traction due limited availability detailed geological and geotechnical data. The Italian Project PRIN-SERENA (mapping Seismic site Effects REgional National scAle) aims improve amplification by deriving site-specific functions (FAs) through modelling validating these models against experimental data...

In the framework of an Italian research project (2022-25 PRIN SERENA “Mapping Seismic Site Effects at Regional and National Scale”, granted by Ministry University Research), we aimed empirical verification calibration numerical ground-motion amplification maps developed within project, using in-depth geological, geophysical seismological information. For this purpose, a database experimental site-specific estimates (AFs) in three interval periods was created for more than...

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...

The Italian NEW AGE project (PRIN 2022 “New Integrated Approach for Seismic Protection and Enhancement of Heritage Buildings on Historic Earthen Deposits”) seeks to advance seismic risk mitigation strategies all cities with significant monumental heritage historic centres.The adopts a holistic approach, treating the urban environment as an integrated soil-building system, assess address mutual interactions between subsurface conditions overlying cultural structures. This...