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The 12 February 2013 North Korean Underground Nuclear Test

机译:2013年2月12日,朝鲜地下核试验

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On 12 February 2013, North Korea conducted its third and the largest nuclear test to date in the China–North Korea border area. According to local news, people living in nearby Chinese cities experienced shaking from this explosion. The U.S. Geological Survey (USGS) reported the explosion was located at (41.301° N, 129.066° E) and the magnitude was M 5.1. This event trigged abundant regional seismic phases in northeast China, Korea, and Japan. Because of its large magnitude, the seismic records from this event showed better signal-to-noise ratios than those from previous two nuclear explosions. Illustrated in Figure 1 are broadband regional seismograms at station MDJ for three North Korea nuclear tests. These waveforms are highly similar, all are featured with abrupt P-wave arrivals, weak Lg phases and well-developed shortperiod Rayleigh waves. We collect the regional waveforms recorded on China National Digital Seismic Network (CNDSN), Global Seismic Network (GSN), and Japan F-net to investigate the 12 February 2013 North Korean nuclear test.
机译:2013年2月12日,朝鲜在中朝边界地区进行了迄今为止第三次也是最大的核试验。据当地新闻报道,居住在中国附近城市的人们在爆炸中遭受了震动。美国地质调查局(USGS)报告说爆炸位于(41.301°N,129.066°E),震级为M 5.1。该事件在中国东北,韩国和日本引发了丰富的区域地震阶段。由于其震级很大,因此这次地震的地震记录显示出比之前两次核爆炸的地震记录更好的信噪比。图1所示为MDJ台站进行的3次朝鲜核试验的宽带区域地震图。这些波形非常相似,均具有突变的P波到来,Lg相位弱和发达的短周期瑞利波。我们收集了在中国国家数字地震台网(CNDSN),全球地震台网(GSN)和日本F-net上记录的区域波形,以调查2013年2月12日的朝鲜核试验。

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