N.K.'s nuclear test may have triggered over 1,300 earthquakes: report

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SEOUL, Sept. 18 (Yonhap) -- Unexpected, prolonged seismic activity has been detected around North Korea's Punggye-ri nuclear test site, notably after the regime's final and most powerful test in 2017, scientific experts said Friday.

The latest findings were discovered by a joint research team from South Korea's Pusan National University and China's Chengdu University of Technology and published in Science, a prominent academic journal.

According to an analysis of seismic wave data analyzed over the past 17 years from 2008, researchers detected a sudden rise in the number of earthquakes near the areas around the Mantap mountain, where the North detonated a total of six nuclear devices at underground tunnels from 2006 to 2017.

During the 11-year period, researchers detected some 60 earthquakes occurred after the North's first nuclear test conducted in 2006. Such seismic activities appeared to have occurred more frequently around 2013, following the North's third nuclear test, the researchers said.

Notably, tremors intensified following the North's largest and final nuclear test in 2017. A total of 1,330 earthquakes have followed since, concentrating on a fault zone spanning some 24 kilometers wide, researchers found. Although earthquakes that followed previous nuclear tests were mostly short-lived, those that erupted after the 2017 test intensified in both frequency and magnitude throughout 2025, they added.

Professor Kim Kwang-hee, who led the South Korean research team, warned that North Korea could experience an earthquake as strong as 6.4 magnitude should the fault zone where previous quakes were concentrated become active.

An image indicating areas where earthquakes occurred near North Korea's nuclear test site in Punggye-ri, provided by Pusan National University (PHOTO NOT FOR SALE) (Yonhap)

fairydust@yna.co.kr (END)

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N.K.'s nuclear test may have triggered over 1,300 earthquakes: report

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首尔，9月18日（韩联社）——科学专家周五表示，朝鲜丰溪里核试验场附近探测到了意想不到的、持续时间较长的地震活动，尤其是在朝鲜政权于2017年进行最后一次也是威力最大的一次核试验之后。

韩国釜山国立大学和中国成都理工大学的联合研究团队发现了最新的研究成果，并发表在著名学术期刊《科学》杂志上。

根据对 2008 年以来 17 年地震波数据的分析，研究人员发现曼塔普山附近地区的地震数量突然增加，而朝鲜北部在 2006 年至 2017 年间在该地区地下隧道共引爆了 6 枚核装置。

研究人员在11年期间探测到，朝鲜在2006年进行首次核试验后发生了约60次地震。研究人员表示，在朝鲜进行第三次核试验后的2013年左右，此类地震活动似乎更加频繁。

值得注意的是，朝鲜在2017年进行了规模最大也是最后一次核试验后，地震活动明显加剧。研究人员发现，此后共发生了1330次地震，集中在一个宽约24公里的断层带上。他们补充说，虽然以往核试验后发生的地震大多持续时间较短，但2017年核试验后发生的地震在2025年期间，无论在频率还是震级上都有所增加。

领导韩国研究团队的金光熙教授警告说，如果以前地震集中发生的断层带再次活跃起来，朝鲜可能会发生震级高达 6.4 级的地震。

釜山国立大学提供的图片显示了朝鲜丰溪里核试验场附近发生地震的区域（图片非卖品）（韩联社）

fairydust@yna.co.kr (完)

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报道称，朝鲜的核试验可能引发了超过1300次地震。