North Korea “seismic event” – January 6, 2016

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​”The N. Korea “seismic event” on 1/6/16 was much too small (M5.1) for us to see it at our New England Seismic Network (or BC-ESP) stations. For us to see a quake at that distance, it would have to be at least about a 6.0 to 6.5.

Here are the seismograms at Weston (WES) where it wasn’t recorded and at Mudanjiang, China (MDJ) where it was recorded very well.

The spectrogram for MDJ is from Jay Pulli, Visiting Scholar at Weston Observatory.”

NKorea_010616_MDJ NKorea_010616_WES
“Spectrograms: Visualizing How the Frequency of Seismic Waves Varies With Time”
https://akafka.wordpress.com/2015/12/15/spectrograms-visualizing-how-the-frequency-of-seismic-waves-varies-with-time/

IRIS Special Event page on this event –
http://ds.iris.edu/ds/nodes/dmc/specialevents/2016/01/05/2016-north-korean-nuclear-test/

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