MERCERAT , E. Diego

We present an extension of the nodal discontinuous Galerkin method for elastic wave propagation to high interpolation orders and arbitrary heterogeneous media. The high-order lagrangian interpolation is based on a set of nodes with excellent interpolation properties in the standard triangular element. In order to take into account highly...

Structural and dynamic identifications of historical buildings provide key input parameters in present archeo-seismological research. The ambition of the research project ACROSS (ArChaeology, inventory of RecOnstruction, Seismology and Structural engineering), involving different institutions in France and Italy, is to study past earthquakes...

The seismic design of buildings erected using new low-carbon construction materials needs the development of a reliable methodology. In this research, a pilot project of a compressed earth block (CEB) masonry building in a medium-high seismic hazard zone in Southern France is developed. The CEBs are produced in-situ, using a machine, and are...

Underwater fiber optic cables commonly traverse a variety of seafloor conditions, which leads to an uneven mechanical coupling between the cable and the ocean bottom. On rough seafloor bathymetry, some cable portions might be suspended and thus susceptible to vortex-induced vibrations (VIV) driven by deep ocean currents. Here, we examine the...

ABSTRACT This study presents the analysis of the seismic records of eight underwater explosions triggered by the French Navy Mine Warfare Office in December 2018 in the Bay of Hyères, southeast France. The explosions (charges of 80–680 kg TNT-equivalent) were recorded by 17 temporary stations composed of medium-to-broadband velocimeters and...

The fundamental frequency plays a primary role in the dynamic assessment of Cultural Heritage towers. Local and global features may impact its value: geometric, material features, interaction with the soil and adjacent buildings, aging, the construction phase, and repairs. A database is assembled to study the relationship between the...

A broadband seismological station (PRIMA) installed offshore Nice airport (southeastern France) reveals a strong amplification effect of seismic waves. PRIMA station was in operation for 2 years (9/2016 to 10/2018) on the outer shelf at a water depth of 18 m. Situated at the mouth of the Var River, this zone is unstable and prone to landslides....

The structural motion of a tall reinforced concrete (RC) building on alluvial soil in Nice (France) is continuously recorded using accelerometers. The structural behavior of the building is studied using operational modal analysis (OMA) to identify its dynamic properties, a finite element (FE) model to reproduce the building response, and...