Seismograms from the M9.0 Sumatra earthquake

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Seismograms of the 2004 M9.0 Sumatra earthquake, as recorded on station WANC on Wrnagell volcano, Alaska. The red signal shows the raw data and the blue represented data that have been lowpass filtered. The red spikes near 2800 s are local microearthquakes triggered by the passing of the surface waves.

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Uploaded: Sep24 15

Last Modified: 2015-09-24 14:54:37
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Jackie Caplan-Auerbach, Western Washington University
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