Energy of a M8.2 Earthquake Propagating Across the Earth

Today, an unbelievably powerful earthquake shook Fiji and the whole Earth….TXESP and Boston College watched LIVE as the teleseismic waves propagated across TX, VA and MA.  The M8.2 earthquake epicenter is near Ndoi Island, Fiji; the event began at 00:19hrs UTC with an extreme depth of ~563.4kms.

TXESP and Boston College, along with other academic colleagues, are learning from these recent large earthquakes to further classroom research efforts of the dynamic Earth.  We compare Raspberry Shake seismograms of teleseismic events and make observations about the similarities or discrepancies in the detection of multiple wave phases, their arrival times, and other details.

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Note the similarities and discrepancies between the seismograms: which seismic wave phases were detected, the amplitude of these waves, and the duration (how much time) of each phase.


Epicenter of the magnitude 8.2 Fiji earthquake. Focal depth was >550kms.

**Seismograms courtesy of TXESP, J. Pulli and A. Kafka.

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