Finite-Source Rupture Model Database

This site collects, displays and distributes finite-source rupture models that image the spatio-temporal evolution of earthquake rupture through modelling/inversion of seismic and/or geodetic data.

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NEWS -- NEWS -- NEWS

As of July 2007, we added a number of new source models, updated existing source-model entries, and appended additional information/data:

• geographical information for each fault -plane element is now included, both in a local cartesian reference frame (with origin at the epicenter) as well as in LAT/LON coordinates
• the full 3D geometry is represented and graphically displayed (particularly useful for multi-segment ruptures)
• if available, the temporal slip evolution is fully incorporated into the source-model files (i.e. solutions for multi-time-window inversions or information on rupture-front arrival times, rise times, slip-velocity functions)
• additional meta-data are incorporated (velocity-density structure, information on distribution of observation points, parameters related to the inversion)

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• As of July 2007, the database contains 152 rupture models for 80 earthquakes in various tectonic regimes, spanning a magnitude range 4.1 <= M < =8.9.
  
  
• The Eventpage for each source model, accessible through the Eventlist-page, displays an image of the final slip distribution, lists basic earthquake source parameters, and provides links for downloading data and figures in various formats.
  
  
• The Downloads section provides links to different *zip-files containing all rupture models in different formats. The MATLAB file SRCMOD.mat (2.9 Mb) contains all source models for easy matlabing.
  
  
• See the FileFormat-page for details on the conventions used for the MATLAB-binaries and the ascii-file formatting, as well as the geometrical representation we chose for the source-model description.
  

• Contributions to this database are highly appreciated. In fact, we hope the number of source models will increase as researchers send us their inversion/modeling results for recent, but also past earthquakes. We encourage contributors to prepare their source models in a format similar to the *fsp-format explained in the FileFormat-page. Please send all inquiries, questions, comments, criticism (hopefully none!) or data to Martin Mai.
  
  
• Disclaimer / Acknowledgment
  

• Acknowledgements: While some of the models were taken from published papers, most of the them were genereously contributed in electronic format by a number of researchers -- I owe all of them a big THANKS (in alphabetical order): M. Antolik, R. Archuleta, G. Beroza, M. Bouchon, R. Burgmann, Z. Cakir, B. Delouis, D. Dreger, S. Hartzell, T. Iwata, B. Hernandez, S. Ide, D. Lavalle, K. Johnsson, S. Jonsson, K. Ma, C. Mendoza, K. Miyakoshi, J. Salichon, H. Sekiguchi, J. Steidl, E. Tinti, D. Wald, Y. Yagi, Y. Zeng, A. Zollo. Some of the models were taken from Dave Wald's repository of finite-source models. Many thanks to all who contributed! We are particularly grateful to S. Murotoni, H. Miyake and K. Koketsu from ERI Tokyo who made a tremendeous effort in collecting and providing rupture models from Japanese resources that otherwise would not have been available to us! My sincere thanks also to people who sent comments and pointed out inconsistencies in the database, in particular Agnes Helmstetter and Elisa Tinti. Special thanks to Flavio Matter and Falko Bethmann for their programming efforts! We gratefully acknowledge financial support by the Southern California Earthquake Center and the E.C Project RELIEF (EVG1-CT-2002-00069).