Radar Scans Detail North Korean Nukes

貌似朝鲜不放弃核武器都不行,世界已实现对朝鲜核武器的雷达监测技术
时间:2018-05-16 单词数:2790

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导读:就像交警在车祸中检查刹车痕迹图以便找出事故责任方那样,研究人员会分析地震波来判断它们属于自然地震还是人为爆炸所致。如果是后者,科学家需要弄清楚爆炸细节,比如其是否属于核爆炸,以及当量有多大。经过反复测试后,地震学家们正提高他们对朝鲜核武器计划的了解。现在他们技术已经相对成熟了,看来这次朝鲜不放弃核武器都不行了。

貌似朝鲜不放弃核武器都不行,世界已实现对朝鲜核武器的雷达监测技术_最新英语新闻

North Korea has promised to close its underground nuclear test site at Mount Mantap later this month. Shortly thereafter, President Trump is set to meet North Korea’s leader Kim Jong-un in Singapore.

朝鲜已承诺在本月晚些时候关闭其位于曼特尔山的地下核试验基地。此后不久,特朗普总统将在新加坡与朝鲜领导人金正恩会面。

Regardless of how that goes, there’s a now an additional tool to investigate covert subterranean tests: radar. Specifically, a type called synthetic aperture radar, which works day and night, and through clouds.

但无论结果怎样,现在已经可以实现通过附加工具来探测隐蔽地下的核武器技术:雷达。具体来说这是一种基于云计算的合成孔径雷达,可以日夜工作。

Scientists already use seismic data in their nuclear detective work. "We use the kind of techniques that earthquake seismologists use to figure some aspect of what that explosion did." Roland Bürgmann, a geophysicist at University of California, Berkeley. He says they can also measure isotopes in the air, as well as optical images pre- and post-explosion.

科学家们在核侦探工作中使用了地震数据。“我们使用地震学家采用的技术来计算爆炸在某些方面产生的影响。”加州大学伯克利分校的地球物理学家Roland Brgmann说。他们还可以测量空气中的同位素,以及在爆炸前和爆炸后的光学图像。

Now Bürgmann and his team have used synthetic aperture radar data from German and Japanese satellites to gather more clues about North Korea’s biggest blast, in September 2017. Comparing before and after scans of the test site, their analysis found that the mountain bulged a dozen feet in one direction, and sunk a foot and a half.

现在,Brgmann和他的团队已经使用了来自德国和日本卫星的合成孔径雷达数据来收集更多有关朝鲜在2017年9月最大爆炸的信息。通过对试验地点的扫描前后对比,他们分析发现这座山在侧膨胀了12英尺,下沉了一英尺半。

Using computational modeling, they then simulated what sort of blasts could have produced those movements. Their estimate: the blast was at least six times as strong as the bomb the U.S. dropped on Nagasaki in World War II. The details are in the journal Science.

通过计算模型,他们模拟了什么程度的炸可以产生这些运动。他们得出的结论是:这次爆炸的强度至少是美国二战中在长崎投下原子弹的六倍。详细信息刊登在科学杂志上。滕王等人,从2017年9月3日北韩核试验开始,马口山的上升、崩塌和压实。

I think our study shows this is an especially valuable observation that can be thrown into the mix. When the US and India launch their synthetic aperture radar satellite, called NIDAR, in 2020, we’ll have even more of this new kind of data. The hope is that no unauthorized nuclear tests will take place to be discovered.

“我觉得我们的研究证明了这种探测非常有价值,值得我们继续深入投入其中。”当美国和印度2020年联合发射他们称之为NIDAR的合成孔径雷达卫星时,我们将会有更多这种新的数据。我们希望不会再有未经授权的核试验被发现。

来源:纽约时报爱语吧作者:penny