Welcome to the PEER Ground Motion Database
The web-based Pacific Earthquake Engineering Research Center (PEER) ground motion database provides tools for searching, selecting and downloading ground motion data.
ALL downloaded records are UNSCALED and as-recorded (UNROTATED). The scaling tool available on this site is to be used to determine the scale factors to be used in the simulation platform. These scale factors can be found with the record metadata in the download (Scaling the traces within this tool would only cause confusion with file versioning).
Please note that, due to copyright issues, a strict limit has been imposed on the number of records that can be downloaded within a unique time window. The current limit is set at approximately 200 records every two weeks, 400 every month. Abusive downloads will result in further restrictions.
The database and web site are periodically updated and expanded. Comments on the features of this web site are gratefully welcome; please send emails to: firstname.lastname@example.org
NGA-West2 -- Shallow Crustal Earthquakes in Active Tectonic Regimes
The NGA-West2 ground motion database includes a very large set of ground motions recorded in worldwide shallow crustal earthquakes in active tectonic regimes. The database has one of the most comprehensive sets of meta-data, including different distance measure, various site characterizations, earthquake source data, etc. The current version of the database is similar to the NGA-West2 database, which was used to develop the 2014 NGA-West2 ground motion prediction equations (GMPEs). peer.berkeley.edu/ngawest2
The PEER NGA-West2 online ground motion database is based on the contributions of a significant number of PEER researchers, including junior and senior researchers, post-doctoral fellows, graduate and undergraduate students, and practicing earthquake engineers and scientists. The following PEER report formed the basis for this tool: PEER 2013/03 – PEER NGA-West2 Database , by: Timothy D. Ancheta, Robert B. Darragh, Jonathan P. Stewart, Emel Seyhan, Walter J. Silva, Brian S.J. Chiou, Katie E. Wooddell, Robert W. Graves, Albert R. Kottke, David M. Boore, Tadahiro Kishida, and Jennifer L. Donahue. This online ground motion tool was developed by Dr. Silvia Mazzoni, Structural & Earthquake Engineering Consultant, with the assistance of James Way, Database Administrator.
The PEER NGA-West2 strong-motion databases, the associated flatfiles, reports, and products are subject to future revisions as a result of the review process, as new information is obtained, or as new interpretations are made.The PEER NGA-West2 databases, flatfiles, and reports are released in their current version “as is.” The PEER Center, University of California, Berkeley, funding and sponsoring agencies for the PEER ground motion project, and all organizations and individuals who contributed to the compilation, processing, and review of the databases and flatfiles are not responsible for any inaccuracy or incompleteness of the data, records, parameters, and documentation. The user of the databases, flatfiles, models, and reports assumes the entire responsibility of using them. The PEER ground motion databases and associated works (“Works”) are Copyrighted © 2013, The Regents of the University of California (Regents). All Rights Reserved. The users of the PEER-NGA databases, flatfiles, models and reports are requested to acknowledge the Pacific Earthquake Engineering Research Center (PEER) in their work and publications. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA, THE PACIFIC EARTHQUAKE ENGINEERING RESEARCH CENTER, OR ITS SUB-AWARDEES BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THE WORKS, EVEN IF THE UNIVERSITY OF CALIFORNIA, THE PACIFIC EARTHQUAKE ENGINEERING RESEARCH CENTER, OR SUB-AWARDEES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA, THE PACIFIC EARTHQUAKE ENGINEERING RESEARCH CENTER, AND SUB-AWARDEES SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE UNIVERSITY OF CALIFORNIA, THE PACIFIC EARTHQUAKE ENGINEERING RESEARCH CENTER, SUB-AWARDEES DO NOT REPRESENT OR WARRANT THAT THE WORKS DO NOT INFRINGE THE INTELLECTUAL PROPERTY, PROPRIETARY, OR CONTRACTUAL RIGHTS OF THIRD PARTIES. THE WORKS PROVIDED HEREUNDER ARE PROVIDED ON AN “AS IS” BASIS, AND THE UNIVERSITY OF CALIFORNIA, THE PACIFIC EARTHQUAKE ENGINEERING RESEARCH CENTER, AND SUB-AWARDEES HAVE NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.