rainbow6867的部落格

North Korean leader Kim Jong Un, center, poses with chiefs of branch social security stations in this undated picture released by North Korea's official news agency on November 27, 2012. North Korea said Thursday that it plans to carry out a new nuclear test and more long-range rocket launches, all of which it said are a part of a new phase of confrontation with the United States.

Kim celebrates with staff from the satellite control center in Pyongyang, North Korea, during the launch of a rocket carrying a satellite, in a photo released by the official North Korean news agency on December 12.

A crowd watches as statues of the nation's founder, Kim Il Sung, and his son Kim Jong Il are unveiled during a ceremony in Pyongyang on April 13, 2012. Photos from North Korea are rare, but the country was on full display in April 2012 as it celebrated the 100th birthday of Kim Il Sung.

A North Korean soldier stands guard in front of an Unha-3 rocket at the Tangachai-ri Space Center on April 8, 2012.

A military vehicle participates in a parade in Pyongyang on April 15, 2012.

North Koreans wave flags in front of portraits of Kim Il Sung, left, and his son Kim Jong Il during celebrations to mark the 100th birth anniversary of Kim Il Sung in Pyongyang on April 16, 2012.

North Korean soldiers relax at the end of an official ceremony attended by leader Kim Jong Un at a stadium in Pyongyang on April 14, 2012.

Kim Jong Un applauds as he watches a military parade in Pyongyang on April 15, 2012.

A North Korean soldier stands on a balcony in Pyongyang on April 16, 2012.

North Korean soldiers march during a military parade in Pyongyang on April 15, 2012.

Soldiers board a bus outside a theater in Pyongyang on April 16, 2012.

North Korean performers sit below a screen showing images of leader Kim Jong Un in Pyongyang on April 16, 2012.

North Korean soldiers salute during a military parade in Pyongyang on April 15, 2012.

Kim Jong Un visits the Rungna People's Pleasure Ground, which is under construction in Pyongyang, in a photo released on July 3, 2012, by North Korea's official Korean Central News Agency.

North Korean soldiers listen to a speech during an official ceremony attended by leader Kim Jong Un at a stadium in Pyongyang on April 14, 2012.

Members of a North Korean military band gather following an official ceremony at the Kim Il Sung stadium in Pyongyang on April 14, 2012.

North Korean military personnel watch a performance in Pyongyang on April 16, 2012.

A North Korean controller is seen along the railway line between Pyongyang and North Pyongan province on April 8, 2012.

A North Korean military honor guard stands at attention at Pyongyang's airport during a diplomatic visit on May 2, 2001.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

(CNN) -- The U.S. Geological Survey reported a seismic disturbance in northern North Korea on Tuesday, centered near the site of the secretive regime's two previous nuclear tests.

The area around the reported epicenter of the magnitude 4.9 disturbance has little or no history of earthquakes or natural seismic hazards, according to U.S. Geological Survey maps. The disturbance took place at a depth of about 1 kilometer, the USGS said.

There were no initial reports concerning the activity on the North's state-run Korean Central News Agency on Tuesday.

3rd nuclear test could empower N. Korea

North Korea threatens new nuclear test

The reclusive, Stalinist state announced last month that it planned a new nuclear test and more long-range rocket launches, all of which it said were part of a new phase of confrontation with the United States.

U.S. analysts say North Korea's first bomb test, in October 2006, produced an explosive yield at less than 1 kiloton (1,000 tons) of TNT. A second test in May 2009 is believed to have been about two kilotons, National Intelligence Director James Clapper told a Senate committee in 2012.

By comparison, the bomb the United States dropped on Hiroshima in 1945 was a 15-kiloton device.

In May 2012, North Korea said it had amended its constitution to formally proclaim itself a "nuclear state."