The article has been updated successfully.USArray Ground Motion Visualizations
As earthquake waves radiate out from the epicenter and encounter Earth's surface, they cause the ground to move. Unless the earthquake is nearby, the scale of these motions are too small and occur over too long of a time scale for humans to detect. However, sensitive instruments such as seismographs are able to discern such changes and record them as seismograms.Dr. Charles Ammon, a professor at Penn State University, has developed a novel way to visualize the seismograms recorded from a large number of seismic stations called an array. These visualizations display the change in amplitude of the ground at each station of the nearly 400 earthquake recording stations through time.
Because EarthScope's Transportable Array seismometers are distributed in a grid with unprecedented density, the collective display of the ground motion at each seismometer is particularly informative. In this collective display, or visualization, of the data we see clearly how seismic energy sweeps across the array.
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USArray Ground Motion Visualizations
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Last Updated
9th of February, 2010
