OECD Nuclear Energy Agency Committee on the Safety of Nuclear Installations (CSNI) Workshop on

    Testing PSHA Results and Benefit of Bayesian Techniques for Seismic Hazard Assessment

    4-6 February 2015
    Pavia, Italy

    Hosted by EUCENTRE / IUSS
    (European Centre for Training and Research in Earthquake Engineering / University Institute for Advanced Study of Pavia)

    Second announcement and call for papers

    Deadline for registration:

    10 January 2015

    Deadline for full paper:

    10 January 2015

    Please send the registration form to:

    EUCENTRE Foundation
    Via Adolfo Ferrata, 1
    27100 Pavia
    Phone: +39 0382 5169833
    Fax: +39 0382 529131
    Website: www.eucentre.it

    Organisation and host

    The CSNI workshop on Testing PSHA Results and Benefit of Bayesian Techniques for Seismic Hazard Assessment was held from 4-6 February 2015 in Pavia, Italy, hosted by EUCENTRE and IUSS and coordinated by OECD/NEA, IAEA and EDF. This second announcement provided information on the technical content of the workshop.

    More information is available on the following workshop pages:

    www.oecd-nea.org/download/iage/psha2015/ (password protected | reminder)

    Objectives of the workshop

    The objective of this workshop was to foster exchanges between geologists, seismologists, statisticians and engineers so as to share experiences in progress related to developments in testing the methodologies of probabilistic seismic hazard analyses (PSHA) and the benefits of Bayesian techniques applied to seismic hazards. The goal was to address the current status of the regulatory arena, identifying and recommending good practices for member countries and exploring future research and development (R&D) to be developed on this topic.

    In recent years, increasing efforts have been devoted to the assessment of the reliability of PSHA results. Different kinds of procedures have been tested and many papers have provided useful information on this subject. Consistent with the pattern of previous CSNI workshops, the deliverables and expected results were the following:

    • a description of the state-of-the-art in methodologies for testing the reliability of PSHA results;
    • a description of application studies conducted in different areas concerning the testing of PSHA results versus available observations in order to get an objective comparison and to improve the confidence in the results;
    • a description of the state-of-the-art in Bayesian techniques for seismic hazard assessment;
    • a description of application studies conducted in different contexts to determine the benefit of Bayesian techniques for seismic hazard assessment;
    • recommendations on:
      • which testing procedure is the most appropriate depending on the available data;
      • good practices and recommendations to implement the testing procedures of the PSHA results;
      • good practices for the implementation of Bayesian techniques in the field of seismic hazard assessment;
      • R&D activities to be developed on the subject.

    The workshop included presentations by international experts and sessions devoted to technical presentations by participants. A final session summarised the discussions and developed conclusions and recommendations for possible further action by the CSNI. All participants were expected to take part in the discussion and in the formulation of conclusions in the final session.

    Technical organisation of the workshop

    Invited lecturers

    Several international experts gave scientific presentations:

    • Precarious rocks and related fragile geological features to test or to improve seismic hazard assessment, John Anderson, Nevada Seismological Laboratory, USA.
    • Probabilistic seismic hazard assessment: combining Cornell-like approaches and data at sites through Bayesian inference, Jacopo Selva, INGV, Italy.
    • Statistical tests of PSHA models, Roger Musson, British Geological Surveil, UK 

    Technical sessions

    List of abstracts accepted for full paper and presentation were as follows:

    1. U.S. Regulatory perspectives on model testing
      Brittain Hill, Clifford Munson and Jon Ake, U.S. Nuclear Regulatory Commission (NRC), USA
    2. Testing probabilistic seismic Hazard Estimates against accelerometric data in two countries: France and Turkey
      Hilal Tasan1, Céline Beauval1, Agnès Helmstetter1, Abdullah Sandikkay2 and Philippe Guéguen1.
      1 ISTerre, Université Grenoble Alpes, IRD, CNRS, OSUG, Grenoble, France
      2 METU, Department of Civil Engineering, Earthquake Engineering Research Center, Middle East Technical University, Ankara, Turkey
    3. Validation of GMPE on very hard rock using global database
      Hongjun Si, Seismological Research Institute Inc., Tokyo, Japan
    4. Direct verification of seismic hazard maps
      Sum Mak and Danijel Schorlemmer, GFZ German Research Centre for Geosciences, Potsdam, Germany.
    5. Some steps forward in confronting probabilistic seismic hazard with observations in Italy
      Laura Peruzza, S2-2014 DPC-INGV Project Working Group, Italy
    6. Testing the reliability of seismic hazard assessments in Italy: a critical review
      Roberto W. Romeo, University of Urbino, Italy
    7. The scoring test on Italian probabilistic seismic hazard estimates developed in the frame of S2-2012 DPC-INGV Project
      D.Albarello, L.Peruzza and V. D'Amico, Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente, Università degli Studi di Sien OGS (Istit Nazionale di Oceanografia e Geofisica), Trieste Inst Nazionale di Geofisica e Vulcanologia, Pisa
    8. Thirty-Year Bayesian Updating of PHSA for Hinkley Point NPP PSHA testing
      Gordon Woo, RMS, London, England
    9. Past is the key of a geological principle as Bayesian philosophy applied for seismic hazard analysis
      José G. Sanchez1, Raúl Pérez Cabañero2 and Maria J. Crespo3
      1 CSN, Consejo de Seguridad Nuclear, Geosciences Branch, Madrid, Spain
      2 IGME, Instituto Geológico y Minero de España, Geological Hazard Division, Madrid, Spain
      3 PRINCIPIA Ingenieros Consultores, Madrid, Spain
    10. Regulatory view on challenges in PSHA in low seismicity areas
      Janne Laitonen and Jorma Sandberg, STUK – Radiation and Nuclear Safety Authority, Finland
    11. Validating hazard validation studies: an Italian proof
      Iunio Iervolino1 and Massimiliano Giorgio2
      1 Dipartimento di Strutture per l'Ingegneria e l'Architettura, Università degli Studi di Napoli Federico II, Naples, Italy
      2 Dipartimento di Ingegneria Industriale e dell'Informazione, Seconda Università di Napoli, Aversa, Italy
    12. Bayesian update of a simplified PSHA model, comparison of different academic cases
      L. Vaseux and J.M. Thiry, AREVA, France
    13. A Bayesian methodology to update the probabilistic seismic hazard assessment
      Ramon Secanell1, Christophe Martin1, E. Viallet2 and Gloria Senfaute2
      1 GEOTER SAS, Clapiers, France
      2 EDF, Division Ingénierie Nucléaire, CEIDRE - TEGG / SEPTEN, Aix-en-Provence
    14. A method for testing PSHA outputs against historical seismicity at the scale of a territory; example of France
      Pierre Labbé, EDF Division Ingénierie Nucléaire, Paris, France.
    15. Seismic hazard assessments: a comparative analysis
      A. Peresan1,2,4, A. Nekrasova2,3, V. Kossobokov2,3,4 and G.F. Panza1,2,4,5
      1 Department of Mathematics and Geosciences, University of Trieste, Italy
      2 The Abdus Salam International Centre for Theoretical Physics, SAND Group, Trieste
      3 IEPT, Russian Academy of Sciences, Moscow, Russian Federation
      4 International Seismic Safety Organization (ISSO)
      5 Institute of Geophysics, China Earthquake Administration, Beijing
    16. Metrics, observations and biases in quantitative assessment of seismic hazard model predictions
      Edward Brooks1, Seth Stein1, Bruce D. Spencer2 and Antonella Peresan3
      1 Department of Earth & Planetary Sciences and Institute for Policy Research, Northwestern University, Evanston, Illinois, USA
      2 Department of Statistics and Institute for Policy Research, Northwestern University, Evanston, Illinois, USA
      3 Department of Mathematics and Geosciences, University of Trieste, Trieste, Italy
    17. Revision of earthquake catalogues on probabilistic terms: consequences on PSHA validation
      M. Mucciarelli, CRS-OGS, Trieste, Scuola di Ingegneria, Università della Basilicata, Potenza
    18. PSHA updating technique with a Bayesian framework: innovations
      Nicolas Humbert, EDF, Centre d'Ingénierie Hydraulique Structure / Génie Civil, France
    19. Constraints on long-term seismic hazard from vulnerable stalagmites
      G. Bokelmann1 and K. Gribovszki1,2
      1 Department of Meteorology and Geophysics, University of Vienna
      2 Geodetic and Geophysical Research Institute, Hungarian Academy of Sciences
    20. Testing PSHA while there are large uncertainties in input data
      Yong Li, U.S. Nuclear Regulatory Commission (NRC)
    21. Testing and evaluation in the global earthquake model
      Danijel Schorlemmer, Sum Mak, Thomas Beutin, Robert Clements, Max Schneider, Fabrice Cotton and Jochen Zschau
    22. Bayesian estimation of the earthquake recurrence parameters for seismic hazard assessment
      Merlin Keller1, Marine Marcilhac2, Thierry Yalamas2, Ramon Secanell3 and Gloria Senfaute1
      1 EDF R&D Departement / CEIDRE-TEGG
      2 PHIMECA
      3 GEOTER, France
    23. Non-ergodic seismic hazard: using Bayesian updating for site-specific and path-specific effects for ground-motion models
      Nicolas Kuehn1 and Norman Abrahamson2
      1 University of California, Berkeley
      2 Pacific Earthquake Engineering Research Center – Pacific Gas and Electric Company
    24. Testing and centering of ground motion models for use in PSHA based on available intensity data
      Philippe L.A. Renault and Luis A. Dalguer, Swissnuclear, Olten, Switzerland
    25. Comparison of PSHA results with historical macroseismic observations in south-east France
      Annalisa Rosti, Maria Rota, Andrea Penna, Emilia Fiorini and Guido Magenes, EUCENTRE, Pavia.


    Location and accommodation

    The workshop was held at EUCENTRE / IUSS in Pavia, Italy.


    All presentations and discussions were in English, and a good command of the English language was necessary to fully benefit from the workshop.

    Organising Committee

    The committee organised the sessions and the final program for the workshop. The following persons formed the organising committee of the workshop:

    Mr Pierre Labbe EDF France Chair
    Mr Paolo Bazzuro EUCENTRE / IUSS Italy Chair
    Mrs Gloria Senfaute EDF France  
    Mr Emanuel Viallet EDF France  
    Mr Gian-Michele Calvi EUCENTRE / IUSS Italy  
    Mr Yosimitshu Fukushima IAEA International  
    Mr Olli Nevander OECD/NEA International  


    Mr Olli NEVANDER
    Nuclear Safety Division
    OECD Nuclear Energy Agency
    Le Seine St-Germain
    12, boulevard des Îles
    92130 Issy-les-Moulineaux

    Tel.: +33 1 45 24 10 58

    Mrs Gloria SENFAUTE
    905 Av Camp de Menthe
    13097 Aix en Provence

    Tel.: +33 4 42 95 96 28
    Fax: +33 4 42 95 95 00

    Mr Paolo BAZZURO
    Via Ferrata, 1
    27100 Pavia

    Tel.: +39 0382 5169811
    Fax: +39 0382 529131

    Last reviewed: 7 February 2015