The COSMOS Virtual Data Center Fact Sheet 2007 http://db.cosmos-eq.org/ The COSMOS Virtual Data Center In 2000, FEMA estimated that the (VDC) is an unrestricted web-based annual losses due to earthquakes for the search engine for access to worldwide U.S. alone was $4.4 billion. Strong- earthquake strong-motion data. It motion time histories acquired by provides an interactive resource for seismic networks are critical to earth research and practicing earthquake scientists for understanding the physics engineers, earth scientists, and of the earthquake process and to government and emergency response improve our ablity to predict ground professionals. The VDC is the only on- shaking from future earthquakes. The line strong-motion resource continuing data of observed ground motions are to expand and significantly improve the important to engineers for designing accessibility and the use of strong- safer structures, ultimately reducing the motion records worldwide. cost of earthquakes and loss of life. The heavily damaged Acorn/Mastagni Bldg, Paso Robles, CA, after the 12/22/2003 San Simeon earthquake. (Photo by Janise Users have a wider range of access Rodgers, USGS). options than any other on-line source; using the VDC, they may search for specific characteristics of the data, view Search for Data on the VDC All of the records from the large legacy data in a geographical perspective, dataset distributed by the National The Map Interface displays earthquakes preview records, compare recorded data Geophysical Data Center (NGDC) are and stations on a world map, which with design spectra and retrieve the data currently being added to the VDC. The users may reconfigure by entering and metadata of most interest to them. VDC continues to incorporate all data latitude and longitude ranges, zooming available from the USGS and CISN in, clicking on a station or earthquake Data available via the VDC with magnitude > 5.0 in highly seismic symbol to transfer to station or areas and > 4.5 in other areas. The VDC earthquake pages, or highlighting the In the last few years substantial data incorporates all data from the Japanese stations reporting a selected earthquake. sets representing earthquakes with K-Net and Kik-net networks with a pga magnitude > 5.0 have been added: of at least 0.1g. Recent data sets from The Earthquakes Page lists earthquake ChiChi, Taiwan; all New Zealand these sources include the 2004 name, magnitude, number of stations records from 1966-2006; the NSF- and data provider for all earthquakes Parkfield and Niigata-Chuetsu funded Guerrero array on the Pacific available through the VDC by region, earthquakes and aftershocks. The VDC Coast of Mexico, as well as smaller but has also recently added data for the with a drop-down list of regions at the seismically important data sets from Kobe 1995 earthquake. The VDC is top of the page for quicker navigation. Central Asia, Turkey and India. As a currently in negotiations with the The Stations Page lists owner and measure of the international reputation Geological Survey of Canada and the station name for all stations available of the COSMOS VDC, the Institute of European Strong-Motion Database to through the VDC by region, and also Geological and Nuclear Sciences Ltd, link to their datasets through the VDC. has a drop-down list of regions at the New Zealand, and the Department of Thus the VDC can be expected to top of the page. Earthquake Engineering, Indian continue its exceptional expansion and The Basic Search Page allows the user Institute of Technology, Roorkee, India its service to the earthquake research to enter the most common parameters. requested that their accelerograms and community. The user may also tailor the output to metadata be stored and distributed reflect station information only, directly from the VDC. earthquake information only, or all data, for the result set. Increase In Data Available Via The COSMOS VDC The Advanced Search Page allows the user to query and recover almost every Sept 2001 Jan 2007 Increase field in the database. The user may Earthquakes 199 623 213% select an html table or a station page as Stations 1,744 3,555 104% the output of the advanced search, or Accelerograms 11,537 36,248 214% download the metadata as an rtf file. The COSMOS VDC is currently supported by funds from COSMOS, the USGS and the CGS. Preview Data via the VDC 40000 Each html search result page has a link to a new map of the results of the 35000 search, a link to each station and earthquake represented, to acceleration 30000 plots for each station, and to both 25000 logarithmic and linear plots of response spectral acceleration. The user may 20000 configure the units in which the spectra 15000 are displayed, scale the spectra and enter parameters to define the shape of 10000 overlaid design spectra that correspond 5000 to several building code standards. 0 J FMAMJ J ASOND J FMAMJ J ASOND J FMAMJ J ASOND J FMAMJ J ASOND J FMAMJ J ASOND Download Data via the VDC 2002 2003 2004 2005 2006 There are 3 ways to download data: From 2001 to 2006 the use of the COSMOS VDC has increased considerably. • on many Earthquake Pages, there is The number of files downloaded has grown from a few hundred per month to a link to a zipped archive of files peak of almost 34,000 in 2006. Sharp peaks in 2003, 2005 and 2006 reflect for that event, allowing the user to downloads from major new datasets. download all data for the selected earthquake. • on the Download Page, users may accelerograms reside with the source In Development select individual files for agencies. At the time of the user’s downloading. request data files are pulled in real time COSMOS is currently developing a • on the Download Page, users select from these agencies that collected and simplified, comprehensive, and files and receive them as a set of archived the data. Thus, users will extensible strong-motion format that is zipped files containing up to 30 always receive the most recent and both easily computer-parseable and data files each, together with a log authenticated copy of data available. human-readable. This format will of files included. facilitate metadata extraction for the When you use this data in your VDC database, website plotting of all The VDC is virtual in that the publications, please acknowledge both data products and conversion of files to COSMOS and the data owners. various formats including xml, Excel and MatLab compatible files. USGS During the spring of 2007 the VDC will CGS become part of the new National Center ACoE for Engineering Strong Motion Data, a USBR joint venture between the USGS (ANSS Utilities and NSMP) and CGS (SMIP) with Universities centers of operation in Sacramento and Consortia Menlo Park, CA. The VDC provides Private search resources and highly valued Japan access to international data that Taiwan complement the US data in the Center. New Zealand COSMOS will continue to provide India guidance and advocacy for the VDC. Canada Ctl & So America The VDC provides a one-stop Turkey & Armenia shopping approach for finding Europe strong-motion data collected anywhere in the world. Users download data from a variety of sources through the COSMOS VDC. This chart represents the large and diverse number of data providers whose data were accessed in 2006. Although the USGS and CGS contributed the largest shares, a substantial number of files were downloaded from Japan (K-Net and Kik-net), U.S. universities and Taiwan. The COSMOS VDC is currently supported by funds from COSMOS, the USGS and the CGS.
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