File:Eew motion graphic.gif
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![File:Eew motion graphic.gif](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Eew_motion_graphic.gif/800px-Eew_motion_graphic.gif)
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Original file (1,140 × 684 pixels, file size: 20.19 MB, MIME type: image/gif, looped, 100 frames, 30 s)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:13, 9 December 2019 | ![]() | 1,140 × 684 (20.19 MB) | Awesome Aasim | {{Information |description ={{en|1=How earthquake early warning systems work. Upon a fault rupture, fast primary and slow secondary waves travel through the ground. The P-wave information is collected and analyzed at a central station, and alerts on estimated magnitude, intensity, epicenter, and time til shaking are transmitted via sirens, phones, computers, television, radio, and other warning systems.}} |date = |source =https://www.usgs.gov/media/images/earthquake-early-... |
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