HR: 0800h
AN: S51A-0229    [Abstracts]
TI: Adapting ShakeMap to Europe: Ground-motion relations and soil response
AU: * Bungum, H
EM: hilmar.bungum@norsar.no
AF: NORSAR, Instituttveien 25 P.O. Box 25, Kjeller, N-2027, Norway
AU: Harmandar, E
EM: ebru.harmandar@gmail.com
AF: Kandilli Observatory and Earthquake Research Institute, Bogazici University, Cengelkoy, Istanbul, 34684, Turkey
AU: Oye, V
EM: volker.oye@norsar.no
AF: NORSAR, Instituttveien 25 P.O. Box 25, Kjeller, N-2027, Norway
AU: Lindholm, C D
EM: conrad.lindholm@norsar.no
AF: NORSAR, Instituttveien 25 P.O. Box 25, Kjeller, N-2027, Norway
AU: Etzelmuller, B
EM: bernd.etzelmuller@geo.uio.no
AF: University of Oslo, Department of Geosciences, Oslo, N-1047, Norway
AB: One of the objectives in the European Community NERIES (Network of Research Infrastructures for European Seismology) project has been to develop means and facilities for shake map applications and associated damage and loss estimation. To this end the project has resolved that one will base this work on the USGS ShakeMap solutions. While operational installations in Europe are limited to centers and agencies that cover the most active seismic regions (such as Turkey and Italy), NORSAR, being located in the low-seismicity region, has installed ShakeMap only for testing and development purposes. These developments have been directed into two areas, the first of which being ground-motion (attenuation) relations where a review of existing European and more regional and local relations has been conducted. For the Mediterranean region there are new and reasonable stable spectral and PGV relations available, however, for the stable continental parts of Europe the coverage is a lot weaker. Also, intensity attenuation is less well studied, showing a much greater scatter, so more work is needed also there. The ground-motion relations depend, however, on good site corrections, and to that end we have also analyzed the use of topographic slope in the absence of direct measurements of Vs30 (Wald & Allen, BSSA, 2007). In general this approach works also for Europe, but some important exceptions have told us that a proper calibration is important also here. Finally we have also looked into using other terrain parameters to assist in the assessment of the relation between topography and soil properties.
UR: http://neries.knmi.nl/
DE: 7212 Earthquake ground motions and engineering seismology
SC: Seismology [S]
MN: 2007 Fall Meeting