Research Article| January 01, 2009 The SCEC/USGS Dynamic Earthquake Rupture Code Verification Exercise R. A. Harris; R. A. Harris * U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 1U.S. Geological Survey, Menlo Park, California, U.S.A. Search for other works by this author on: GSW Google Scholar M. Barall; M. Barall U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 1U.S. Geological Survey, Menlo Park, California, U.S.A. 2Invisible Software, San Jose, California, U.S.A. Search for other works by this author on: GSW Google Scholar R. Archuleta; R. Archuleta U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 3University of California, Santa Barbara, U.S.A. Search for other works by this author on: GSW Google Scholar E. Dunham; E. Dunham U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 4Harvard University, Cambridge, Massachusetts, U.S.A. Search for other works by this author on: GSW Google Scholar B. Aagaard; B. Aagaard U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 1U.S. Geological Survey, Menlo Park, California, U.S.A. Search for other works by this author on: GSW Google Scholar J. P. Ampuero; J. P. Ampuero U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 5California Institute of Technology, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar H. Bhat; H. Bhat U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 6University of Southern California, Los Angeles, U.S.A. Search for other works by this author on: GSW Google Scholar V. Cruz-Atienza; V. Cruz-Atienza U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 7Universidad Nacional Autónoma de México, Mexico City, Mexico Search for other works by this author on: GSW Google Scholar L. Dalguer; L. Dalguer U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 8ETH, Zurich, Switzerland Search for other works by this author on: GSW Google Scholar P. Dawson; P. Dawson U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 1U.S. Geological Survey, Menlo Park, California, U.S.A. Search for other works by this author on: GSW Google Scholar S. Day; S. Day U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 9San Diego State University, California, U.S.A. Search for other works by this author on: GSW Google Scholar B. Duan; B. Duan U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 1U.S. Geological Survey, Menlo Park, California, U.S.A. Search for other works by this author on: GSW Google Scholar G. Ely; G. Ely U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 6University of Southern California, Los Angeles, U.S.A. Search for other works by this author on: GSW Google Scholar Y. Kaneko; Y. Kaneko U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 5California Institute of Technology, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar Y. Kase; Y. Kase U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 11Geological Survey of Japan, Tsukuba, Japan Search for other works by this author on: GSW Google Scholar N. Lapusta; N. Lapusta U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 5California Institute of Technology, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar Y. Liu; Y. Liu U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 5California Institute of Technology, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar S. Ma; S. Ma U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 9San Diego State University, California, U.S.A. Search for other works by this author on: GSW Google Scholar D. Oglesby; D. Oglesby U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 12University of California, Riverside, U.S.A. Search for other works by this author on: GSW Google Scholar K. Olsen; K. Olsen U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 9San Diego State University, California, U.S.A. Search for other works by this author on: GSW Google Scholar A. Pitarka; A. Pitarka U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 13URS Corporation, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar S. Song; S. Song U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 13URS Corporation, Pasadena, California, U.S.A. Search for other works by this author on: GSW Google Scholar E. Templeton E. Templeton U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, California 94025 U.S.A. harris@usgs.gov (R. A. H.) 4Harvard University, Cambridge, Massachusetts, U.S.A. Search for other works by this author on: GSW Google Scholar Seismological Research Letters (2009) 80 (1): 119–126. https://doi.org/10.1785/gssrl.80.1.119 Article history first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation R. A. Harris, M. Barall, R. Archuleta, E. Dunham, B. Aagaard, J. P. Ampuero, H. Bhat, V. Cruz-Atienza, L. Dalguer, P. Dawson, S. Day, B. Duan, G. Ely, Y. Kaneko, Y. Kase, N. Lapusta, Y. Liu, S. Ma, D. Oglesby, K. Olsen, A. Pitarka, S. Song, E. Templeton; The SCEC/USGS Dynamic Earthquake Rupture Code Verification Exercise. Seismological Research Letters 2009;; 80 (1): 119–126. doi: https://doi.org/10.1785/gssrl.80.1.119 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search Numerical simulations of earthquake rupture dynamics are now common, yet it has been difficult to test the validity of these simulations because there have been few field observations and no analytic solutions with which to compare the results. This paper describes the Southern California Earthquake Center/U.S. Geological Survey (SCEC/USGS) Dynamic Earthquake Rupture Code Verification Exercise, where codes that simulate spontaneous rupture dynamics in three dimensions are evaluated and the results produced by these codes are compared using Web-based tools. This is the first time that a broad and rigorous examination of numerous spontaneous rupture codes has been performed—a significant advance... You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Synthetic time histories from large-scale three-dimensional dynamic rupture or ground-motion simulations generally constitute large data sets, which typically require hundreds of megabytes, gigabytes or even terabytes of storage capacity (see, e.g. , Olsen et al. 2008, 2009). For a seismologist analyzing rupture propagation or an earthquake engineer performing seismic hazard analysis, accessing large simulation output can be a tedious and error-prone procedure. For example, manual extractions of synthetic ground-motion records at a few sites of interest, or sliprate functions at desired locations on the fault, are subject to potential misinterpretation of site coordinates, units, or coordinate system orientation. If ground-motion synthetics or source-time functions are requested for a larger area (for example, to analyze site effects or rupture variability) additional problems may arise, such as bandwidth-related transfer delays, compatibility of storage devices used for dissemination, and time-consuming metadata assembly. Finally, the user may need to reformat the synthetics to apply post-processing steps, such as filtering or graphical display. To circumvent these problems we have developed a userfriendly Web application (WebSims) that allows fast plotting, processing, storage, and dissemination of rupture and groundmotion simulations. WebSims allows interactive access to large multidimensional gridded synthetic data sets. Since there is a unique time history at each grid point for each scenario, static storage of plot images for each point would require extraordinary amounts of disk space. Thus, clearly, plots must be created dynamically. WebSims uses software that allows on-the-fly extraction and plotting of synthetic seismograms via a Web browser. In terms of plotting and filtering features, but via different software, WebSims builds on a recent Web-based system used for validation of dynamic rupture simulations (Harris et al. 2009). However, an important difference from Harris et al. 's software is that WebSims is designed to manipulate large amounts of time series from simulations …

The University of California Campus-Laboratory Collaboration (CLC) project is an integrated 3 year effort involving Lawrence Livermore National Laboratory (LLNL) and four UC campuses - Los Angeles (UCLA), Riverside (UCR), Santa Barbara (UCSB), and San Diego (UCSD) - plus additional collaborators at San Diego State University (SDSU), at Los Alamos National Laboratory and in industry. The primary purpose of the project is to estimate potential ground motions from large earthquakes and to predict site-specific ground motions for one critical structure on each campus. This project thus combines the disciplines of geology, seismology, geodesy, soil dynamics, and earthquake engineering into a fully integrated approach. Once completed, the CLC project will provide a template to evaluate other buildings at each of the four UC campuses, as well as provide a methodology for evaluating seismic hazards at other critical sites in California, including other UC locations at risk from large earthquakes. Another important objective of the CLC project is the education of students and other professional in the application of this integrated, multidisciplinary, state-of-the-art approach to the assessment of earthquake hazard. For each campus targeted by the CLC project, the seismic hazard study will consist of four phases: Phase I - Initial source and site characterization, Phase II - Drilling, logging, seismic monitoring, and laboratory dynamic soil testing, Phase III - Modeling of predicted site-specific earthquake ground motions, and Phase IV - Calculations of 3D building response. This report cover Phase I for the UCSB campus and incudes results up through March 1997.