Multiple Stations
This visualization shows the same station and seismogram as in the one station movie. But now we have added all 400 USArray seismic stations to the map. Not the pattern of propagating seismic waves is revealed. What previously looked a random red and blue blinking dot on the map is now part of a coherent, large-scale pattern.
The stations change color depending on whether the seismometers are moving up or down. Blue is up, red is down. The more intense the color, the larger the motion.