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Site effects assessment using ambient excitations (SESAME)

Site effects assessment using ambient excitations (SESAME)

Objective

This proposal deals with the important issue of site effect estimation for seismic risk mitigation, with special attention to urban areas. It focuses on two low cost techniques using ambient seismic vibrations, and aims at clarifying their actual ability to provide useful, direct or indirect, information for local amplification estimates. The first technique, a very simple one, is the so-called H/V technique advertised by Nakamura; he second, more advanced, one uses noise array measurements to derive the dispersion curves of surface waves, and from that the velocity profile. The proposed work includes a theoretical and numerical part to better understand the nature of seismic noise, and to develop validated numerical tools to simulate seismic noise in arbitrary environments. It also includes thorough experimental and data processing investigations to clearly assess the stability, robustness, reliability and physical meaning of these 2 techniques. All the theoretical, experimental and numerical results will be used to propose user guidelines for the H/V technique (a drastic need at the European and world levels since this technique is very often misused), and practical recommendations for array measurements (not yet as developed), and corresponding software

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Coordinator

UNIVERSITE JOSEPH FOURIER - GRENOBLE 1

Address

Rue De La Piscine 1381 Domaine Universitaire BÈTim
38041 Grenoble

France

Administrative Contact

Claude FEUERSTEIN (Professor)

Participants (13)

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CENTRE D'ETUDES TECHNIQUES DE L'EQUIPEMENT - MEDITERRANEE

France

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

France

GEOPHYSICAL INSTITUTE - SLOVAK ACADEMY OF SCIENCES

Slovakia

INSTITUTE OF ENGINEERING SEISMOLOGY AND EARTHQUAKE ENGINEERING

Greece

INSTITUTO DE CIENCIAS DA TERRA E DO ESPACO

Portugal

ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Italy

LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES

France

NATIONAL RESEARCH COUNCIL OF ITALY

Italy

RESONANCE INGENIEURS-CONSEILS SA

Switzerland

SWISS FEDERAL INSTITUTE OF TECHNOLOGY ZUERICH

Switzerland

UNIVERSITE DE LIEGE

Belgium

UNIVERSITY OF BERGEN

Norway

UNIVERSITY OF POTSDAM

Germany

Project information

Grant agreement ID: EVG1-CT-2000-00026

  • Start date

    1 May 2001

  • End date

    31 October 2004

Funded under:

FP5-EESD

  • Overall budget:

    € 1 571 674

  • EU contribution

    € 889 648

Coordinated by:

UNIVERSITE JOSEPH FOURIER - GRENOBLE 1

France