Special Event: 2016 North Korean nuclear test

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On Jan 6, 2016, a magnitude 5.1 event was recorded in North Korea. Preliminary results suggests that a nuclear test took place.

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Event parameters (from USGS)

These are preliminary results and are subject to change without notice. Please check the USGS page for the latest official information.

Magnitude 5.1
UTC Time Tuesday, January 6, 2016 at 01:30:01 UTC
Local Time Tuesday, January 6, 2016 at 10:00:01 (UTC+8:30) at epicenter
Location 41.305°N, 129.039°E
Depth 0.0km (0.0 miles)
Region ENE of Sungjibaegam, North Korea
Distances 21km (13mi) ENE of Sungjibaegam, North Korea
21km (13mi) ENE of Sungjibaegam, North Korea
37km (23mi) WNW of Hau-ri, North Korea
44km (27mi) NNW of Kilju, North Korea
376km (234mi) NE of Pyongyang, North Korea
Details USGS

USGS Summary pages for the four events

1) M5.1 2016-01-06 01:30:01 UTC, 41.305°N, 129.039°E, depth 0 km
● Mb 5.1 (US), Ms 4.0 (US)
http://earthquake.usgs.gov/earthquakes/eventpage/us10004bnm

2) M5.1 2013-02-12 02:57:51 UTC, 41.299°N, 129.004°E, depth 0 km
● Mb 5.1 (US), Ms 4.0 (US)
● Underground nuclear explosion.
http://earthquake.usgs.gov/earthquakes/eventpage/usc000f5t0

3) M4.7 2009-05-25 00:54:43 UTC, 41.303°N, 129.037°E, depth 0 km
● Mb 4.7 (US)
● Underground nuclear explosion.
http://earthquake.usgs.gov/earthquakes/eventpage/usp000gxgc

4) M4.3 2006-10-09 01:35:28 UTC, 41.294°N, 129.094°E, depth 0 km
● Mb 4.3 (US)
● Underground nuclear explosion.
http://earthquake.usgs.gov/earthquakes/eventpage/usp000eurb

Special events page for 2013 nuclear test

2013 special events page

USGS poster

CTBTO summary page

U of Science & Technology of China summary page

NORSAR Information on North Korea’s nuclear test on 6 January 2016

Some preliminary figures

2013 vs 2016 at station MDJ
Seismic recordings of vertical ground motion at GSN station IC.MDJ of the 2013 and 2016 seismic events. Data have been instrument response corrected to velocity and filtered between 0.03 and 3 Hz. (Alex Hutko, IRIS)

Surface wave comparison.
Displacement seismograms show strong Rayleigh waves characteristic of shallow explosion sources. (Anthony Lomax, ALomax scientific)

2006, 2009, 2013 & 2016 at station MDJ
Seismic recordings of vertical ground motion at GSN station IC.MDJ of the 2006, 2009, 2013 and 2016 seismic events. Data have been instrument response corrected to velocity and are unfiltered. (Andy Frassetto, IRIS)

2016 vs an M5.0 regional earthquake.
Comparison: 2016 North Korean nuclear test and 2005 M5.0 earthquake, both at similar distances from seismometer. (Andy Frassetto, IRIS)

A moment tensor solution by Douglas Dreger
A moment tensor solution by Douglas Dreger (UC Berkeley) using station BJT, HIA an INCN. The results are consistent with those we obtained for the 2006 and 2009 tests (e.g. Ford et al. 2006, 2009).

Pwaves_4tests.png
A comparison of P-waves from four N Korean nuclear tests shows very similar waveforms. (Dan McNamara, USGS)

SeisSound movie all 4 North Korean tests at station MDJ (Zhigang Peng, Georgia Tech)


Seismograms and Sonograms from the 4 North Korean tests at station MDJ.
(Click on image to play movie)
Seismograms and Sonograms from the 4 North Korean tests at station MDJ. The seismic data is instrument-corrected and is played at 100 times faster so that they can be heard in the audible range (Zhigang Peng, Georgia Tech)

Relocation exercise and example results

Our special events page for the 2013 event had a relative relocation exercise here

2016 updated relocation exercise zip file with SAC waveform files & codes

NSF SAGE Facility Event Page

The NSF SAGE Facility event page for this event contains links to additional tools and data.

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