NERIES

NEtwork of Research Infrastructures for European Seismology

NERIES Subproject JRA2 TaskA - Objectives and expected impact

The living Euro-Med earthquake hazard

Seismic hazard has traditionally been assessed at a national level in Europe. However, a first unified earthquake hazard map for Europe and the Mediterranean was published in 1999 in the framework of GSHAP, and completed in 2002 for Europe as a whole in the framework of the SESAME project of the European Seismological Commission.

Based upon this, Section 2.6 has the intention to:  

  • update a unified earthquake catalogue up to present time,
  • develop techniques and infrastructure to re-compute the hazard maps automatically whenever new significant data become available and adjustments must be made, or when changes in the seismicity distribution occur which alter the hazard.

Through a universal portal, Euro-Med hazard results will ultimately be centrally disseminated. The necessary infrastructure should be useful on a broader level and thus facilitate a more pretentious and sustainable approach to earthquake hazard mapping.

Link to Webpage of the NERIES-Project: http://neries.knmi.nl/

Developing new approaches to earthquake hazard assessment and forecasting

A new generation European hazard map has been established by considering an up-to-date earthquake catalogue and ground motion models and applying the new methodology of seismic hazard assessment called the hybrid zoneless approach. To build up a hazard map according to this approach, the source parameters acquired from earthquake catalogue and large-scale zones based solely on the large-scale geological architecture are the only inputs of this approach. Because of the minor model assumptions for the hybrid zoneless approach, it provides a suitable basis for application to automatically performed seismic hazard assessment in regular time steps accounting for updated earthquake catalogue in the future as it is part of NERIES JRA.

The European seismic hazard map acquired from the hybrid zoneless approach
The European seismic hazard map acquired from the hybrid zoneless approach (Peak Ground Acceleration PGA with 10% probability of exceedence within 50 years in ms-2)

Contact

Prof. Dr. G. GrĂ¼nthal

Section 2.6
Seismic Hazard and Stress Field

Helmholtzstr. 6
Room 201
T: +49(0)331 288 1120