朝鲜试爆核弹一颗

地震数据如下（感谢我室友提供消息）：

http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2009hbaf.php#details

Earthquake Details

Magnitude
4.7
Date-Time
Monday, May 25, 2009 at 00:54:43 UTC
Monday, May 25, 2009 at 09:54:43 AM at epicenter
Time of Earthquake in other Time Zones
Location
41.331°N, 129.011°E
Depth
0 km (~0 mile) set by location program
Region
NORTH KOREA
Distances
75 km (45 miles) NNW of Kimchaek, North Korea
95 km (60 miles) SW of Chongjin, North Korea
180 km (110 miles) SSW of Yanji, Jilin, China
380 km (235 miles) NE of PYONGYANG, North Korea
Location Uncertainty
horizontal +/- 5.3 km (3.3 miles); depth fixed by location program
Parameters
NST= 76, Nph= 76, Dmin=474.4 km, Rmss=0.8 sec, Gp= 68°,
M-type=body wave magnitude (Mb), Version=8
Source
USGS NEIC (WDCS-D)
Event ID
us2009hbaf

4.7级地震能量相当于一万吨左右TNT