Important source added on January 9, 2015.
KCNA - Korean Central News Agency (Pyongyang, North Korea)
Today early in the morning, North Korea carried out a nuclear test that should have been the first test of a hydrogen bomb. However, Western sources still doubt it was a successful test as the announced kind of weapon should have produced a much higher effect than was detected by sophisticated seismic observation in the U.S.A..
On the same day, China's news agency XinHua compared seismic data collected in China and the U.S.A.:
另据朝中社6日报道,朝鲜最高领导人金正恩代表朝鲜劳动党于去年12月15日下达进行氢弹试验命令,并于今年1月3日签署最终命令。
On [January] 6 and according to a separate report from the Korean Central News Agency (朝鲜中央通讯社), North Korea's supreme leader Kim Jong Un, on December 15 and on behalf of the North Korean Workers' Party, made known to have given the order for the test of a hydrogen bomb, and he signed the final order on January 3 [2016].
6日上午10时左右,新华社记者正在平壤市区采访,未感到震感。首都平壤街头一切正常。
On [January] 6 at about 10:00 am, a correspondent of XinHua agency, while gathering news in Pyongyang, did not feel a [seismic shock]. In the capital Pyongyang all streets [remained untouched].
中国地震台网中心网站发布信息,格林尼治时间6日1时30分(北京时间6日9时30分),朝鲜发生4.9级地震,震中位于北纬41.3度、东经129.1度,震源深度为0.0公里。 另据美国地质勘探局地震信息网报道,格林尼治时间6日1时30分(北京时间6日9时30分),朝鲜发生5.1级地震,震中位于北纬41.3085度、东经129.0337度,震源深度10.0公里。
The center for China's network of seismic stations issued information that on [January] 6 at 01:30 GMT (i.e. 09:30 Beijing local time) North Korea experienced a 4.9 degree [seismic shock], its center located at 41.3 degrees north latitude and 129.1 degrees east longitude, the [seismic] focus lying at a depth of 0.0 km.
Separately, the U.S. Geological Survey Earthquake Information Network reported a [seismic shock] of 5.1 degrees on [January] 6 at 01:30 GMT (09:30 Beijing Time), the seismic center being located at 41.3085 degrees north latitude and 129.0337 degrees east longitude, the focus at a depth of 10.0 km.
朝鲜此前宣布分别于2006年、2009年、2013年成功进行了3次地下核试验。
North Korea earlier declared having separately carried out three subterranean nuclear tests in 2006, 2009 and 2013.
[Source: People's Network on January 6, 2016]
朝鲜试爆氢弹疑造假 当量不及原子弹
The North Korean H-bomb explosion is probably a fake.
[Strength of explosion] is not reaching an atomic bomb.
[Source: Military site of Ifeng news center on January 6, 2016]
朝鲜宣布拥有氢弹背后意图曝光 中国迅速亮明立场
North Korea declares to possess a H-bomb
and ulterior motives are exposed to the sun.
China rapidly makes clear its position.
金正恩为何选择在此时提起氢弹?
Why did Kim Jong Un decide to raise
the item of a H-bomb just at this time ?
Last December (2015), a semi-official Chinese news source already discussed the capability of Kim Jong Un's North Korea to build a H-bomb:
据朝中社10日报道,近日,朝鲜领导人金正恩突然宣布朝鲜目前已经掌握了氢弹技术。 此番言论并未如以前金氏在朝核问题上的表态那般在国际社会引起轩然大波,只有中国 外交部第一时间作出反应,表示坚持半岛无核化立场。
According to a report from the [North] Korean Central News Agency on [December] 10 [2015], North Korea's leader Kim Jong Un unexpectedly declared that North Korea at present already controls the H-bomb technology. This remark is not [the same] like a previously stated standpoint of Kim in the frame of the North Korean nuclear subject and which caused a mighty uproar of the international community. [However] only China's ministry of foreign affairs showed a first time reaction and made clear [it would] insist on [its] position of inhibiting nuclear proliferation on the Korean peninsula. .....
朝鲜真的已经能够造出氢弹了吗?
Is North Korea really capable of building a H-bomb ?
=> Result of the Chinese article's evaluation:
在此前提下,制造以小型原子弹作为引信的氢弹难度非常之大。
From the earlier mentioned [facts] follows that difficulties [will be] unusually high to use a small-sized atomic bomb as the detonator of a H-bomb.
[Source: China.com / CRI online (China Radio International) 国际在线 on December 14, 2015]
The war of nerves continues .....