Small but Big, Part 2 – Medford, Oklahoma

At 02:26hrs UTC on 09/08/2017 a magnitude 3.9 (mb) earthquake occurred in Medford, OK; the event was recorded here in Spring, TX as a nice image to identify different seismic wave phases.  Stations such as E1TX which are close to the recorded earthquake  generally observe many wave phases very close in temporal space.  Shown is this example from the Medford, OK event (~7 polar degrees away); also shown is one interpretation of seismic waves and their travel times [to as recording station:

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