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    • Strong Motion Earthquake Data Values of Digitized Strong-Motion Accelerograms, 1933-1994 (Superseded Version)

    Metadata Updated: May 17, 2025

    The NOAA National Centers for Environmental Information decommissioned the Strong Motion Earthquake Data Values of Digitized Strong-Motion Accelerograms, 1933-1994 on May 05, 2025 with no further updates. Upon termination, the underlying data will be available from https://doi.org/10.25921/4ac6-8z18. Comments and questions may be sent to: ncei.info@noaa.gov. Note this metadata record is accompanied by another newer version of metadata for the same product. The Strong Motion Earthquake Data Values of Digitized Strong-Motion Accelerograms is a database of over 15,000 digitized and processed accelerograph records from 1933 to 1994. Data were obtained from a variety of structural and geologic environments. Most of the data are available in three levels of processed files. The first type of file contains raw (uncorrected) time, history data points digitized from the analog accelerogram. The second is a filtered, instrument corrected version of the time, history data. This file also contains calculated velocities and displacements obtained by the integration and double integration of the corrected accelerations. The third type of file includes the calculated Fourier and response spectra data. The data are from the United States, Algeria, Argentina, Armenia, Australia, Bulgaria, Canada, Chile, China, El Salvador, Fiji, Germany, Greece, India, Iran, Italy, Japan, Mexico, New Zealand, Nicaragua, Papua New Guinea, Peru, Portugal, Romania, Spain, Taiwan, Turkey, and Uzbekistan. This database is static and is no longer being updated.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date May 8, 2025
    Metadata Created Date October 18, 2024
    Metadata Updated Date May 17, 2025
    Reference Date(s) April 13, 1996 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC MGG Hazards WAF

    Other Data Resources

    Graphic Preview

    Accelerograph image of the Imperial Valley Aftershock May 19, 1940 at El Centro, California.

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 8, 2025
    Metadata Created Date October 18, 2024
    Metadata Updated Date May 17, 2025
    Reference Date(s) April 13, 1996 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.mgg.hazards:G01145
    Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: US National Geophysical Data Center / World Data Service (NGDC/WDS) (2025). Strong Motion Earthquake Data Values of Digitized Strong-Motion Accelerograms, 1933-1994 (NCEI Accession 0303927). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/4ac6-8z18. Accessed [date].
    Bbox East Long 178.
    Bbox North Lat 62.
    Bbox South Lat -45.
    Bbox West Long -178.
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Accelerograph image of the Imperial Valley Aftershock May 19, 1940 at El Centro, California.
    Graphic Preview File https://www.ngdc.noaa.gov/hazard/img/accel.gif
    Graphic Preview Type jpg
    Harvest Object Id fb6f7514-8c8a-4bb8-a0c4-4e9e1e4f330b
    Harvest Source Id 7b37b703-805c-4a27-b47f-d471f07b5ed7
    Harvest Source Title NGDC MGG Hazards WAF
    Licence
    Lineage The database was started in the 1970s. The purpose was to provide access to raw and processed earthquake strong motion data to earthquake engineers.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-178.0, -45.0], [178.0, -45.0], [178.0, 62.0], [-178.0, 62.0], [-178.0, -45.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1933-03-11
    Temporal Extent End 1994-01-17

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