SIGMA - Seismic Ground Motion Assessment

The Project is organized in five main Work Packages:

WP1: a better knowledge of seismic sources. The two main goals are to produce a catalogue of earthquakes that covers both the historical and instrumental periods, and to improve knowledge of faults and geological structures that are potentially active.

WP2: to develop methods of ground-motion prediction. The goal is to develop methodologies and analysis tools for predicting seismic ground motion that are adapted to the French context and nearby countries, and that uses a realistic representation of physical and epistemic uncertainties.

WP3: improve local site conditions characterization. The goal is to develop methods and tools to evaluate sites potentially subjected to local site effects, and that are appropriate to be used in the seismic hazard calculation methods.

WP4: improve Seismic Hazard Models. The intention is to better identify and quantify uncertainties with the goal to reduce them, particularly the epistemic uncertainties. It is proposed to validate and introduce methods that are existing or are in the process of being developed, and to explore new directions, for testing probabilistic hazard curves against observations.

WP5: Improve characterization and exploitation of seismic ground motion. The studies in this work package are to ensure that results of the overall project fulfil engineers’ and designers’ needs for the design and operations of various facilities types. Its goal is to produce methods and tools for the development of the required engineering parameter(s) of the seismic ground motion, for several return periods, and various levels of risk, adapted to the facilities.

Partners

• Basilicata University Potenza (Italy)

• BGS, British Geological Survey, (United Kingdom)

• BRGM, Bureau de recherches géologiques et minières (France)

• CEREGE, Centre Européen de Recherche et d'Enseignement (France)

• Comenius University in Bratislava (Slovakia)

• EMSM, European Mediterranean Seismological Centre (France)

• EOST, Institut de Physique du Globe de Strasbourg (France)

• Géoazur (France)

• Géodynamique et Structure (France)

• INGV, Istituto Nazionale di Geofisica e Vulcanologia (Italy)

• IRSN, Institut de Radioprotection et de Sûreté Nucléaire (France)

• ISTerre, Institut des Sciences de la Terre (France)

• Laboratoire 3S-R, laboratoire Sols, Solides, Structures – Risques (France)

• METU, Middle East Technical University (Turkey)

• ORB, Observatoire Royal de Belgique (Belgium)

• POLIMI, Politecnico di Milano (Italy)

• RPK, Structural Mechanics Consulting (USA)

• SRC, Savy Risk Consulting (USA)

• UJF, Université Joseph Fourier (France)

• Université de Versailles Saint-Quentin-en-Yvelines (France)

• Université Paul Cézanne Aix Marseille (France)

• University of California, Berkeley (USA)

• University of Potsdam (Germany)

Website: www.projet-sigma.com
Fugro Contact: Gabriele Ameri (g.ameri@fugro.com)