The Constorium of Organizations for Strong-Motion Observation Systems (COSMOS) Virtual Data Center (VDC) is an unrestricted Web portal to strong-motion seismic data records of the United States and 14 contributing countries for use by the engineering and scientific communities ( As of January 2006, the VDC contains the searchable metadata for 514 earthquakes, 3,052 stations, and 26,708 acceleration traces. A flexible, full range of search methods, including map-based, parameter-entry, and earthquake- and station-based searches, enables the user to quickly find records of interest. A range of display and download options allows users to view data in multiple contexts,...

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