M 4.7 Nuclear Explosion - 21 km ENE of S?ngjibaegam, North Korea
- 2009-05-25 00:54:43 (UTC)
- 41.303°N 129.037°E
- 0.0 km depth
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Origin - Review Status
- REVIEWED
- Magnitude
- 4.7 mb
- Depth
- 0.0 km
- Time
- 2009-05-25 00:54:43 UTC
View Nearby Seismicity - Time Range
± Three Weeks - Search Radius
250.0 km - Magnitude Range
≥ 1.0
Contributors US
USGS National Earthquake Information Center, PDE
The shallow, magnitude 4.7 seismic event that occurred on 25 May 2009 at 00:54:43 UTC is linked to the claim of a nuclear test by North Korean officials. While the USGS cannot positively identify the seismic event as a nuclear test, it was shallow and located in the vicinity of the 9 October 2006 North Korean nuclear test (magnitude 4.3). Moreover, comparison of the seismograms of the 9 October 2006 and 25 May 2009 events at individual seismic stations shows similar features, suggesting that the two events are in close spatial proximity and are the same type of source, although the more recent event is larger.