Penn State - Earthquake Seismology

Earthquake Ground Motion Animations


Near Hawaii - 15 October 2006, 17:07:48 UTC (Mw = 6.7)

The animation shows the signal power in the 100-15s period range observed across the western United States by the EarthScope transportable array and generated by the 15 October 2006 Hawaii earthquake. Each circle represents a seismometer and the colors change to reflect variations in the signal power crossing the array. For more information on the earthquake, click here.


Click here for more information on EarthScope; click here for information on the status of the transportable array.


Selected seismic wave traveltimes (from Phillip Crotwell's version of taup), distance


Gcarc = 34deg / Depth = 20 km Phase Time Slowness P 393.56 8.716 PP 463.00 12.699 PP 464.87 13.597 PP 464.98 13.543 PP 468.30 11.084 PP 469.06 11.366 PPP 473.36 13.688 PcP 556.88 2.789 S 711.78 15.500 SS 831.42 24.230 SSS 846.91 24.516 SS 854.89 20.469 SS 855.95 20.947 ScS 1020.17 5.155


Vertical component displacement seismograms used in the animation. The animation illustrates the signal power (which is proportional to the square of the ground velocity). The two red lines show iasp91 P and PP times, and the two blue lines show the predicted arrival times of S and SS. Open image in separate window to enlarge.

Penn State Earthquake Seismology

Department of Geosciences