大家好,今天小编来为大家解答地核的速度可能正在改变|学习英语|阅读英文这个问题,很多人还不知道,现在让我们一起来看看吧!
最近的一项研究表明,与地球外部相比,地球中心的自转速度正在减慢。
地球科学家或地质学家表示,地球的中心或核心可以以与外部区域不同的速度自转或自转。
最新研究发表在科学出版物《自然地球科学》上。
该研究的作者是中国北京大学的宋晓东和杨易。他们利用地震产生的地震波信息来研究岩心。
地球的内核是一个比月球稍小的热铁球。因为它漂浮在外核的液态金属中,所以它可以以与地球其他部分不同的速度旋转。
20 世纪30 年代,科学家通过研究地震波穿过地球时速度的变化发现了地核。速度的变化表明核心是一个主要由铁制成的实心中心。
Song 和Yang 的新研究研究了他们所谓的“20 世纪90 年代初的重复地震波”。他们寻找地震波在地球内部相同路径上传播所需时间的变化。
科学家们认为,地核自转的变化可以解释旅行时间的变化。
他们告诉法国新闻社法新社:“我们相信内核相对于地球表面来回旋转,就像秋千一样。”他们补充说,它的相对旋转大约每35 年改变一次。
他们还表示,这些变化与“一天的长度”(地球绕其轴旋转所需的确切时间)的微小变化相对应。
研究结果不同
2022 年6 月,南加州大学(USC) 地球科学家John Vidale 和Wei Wang 在Science Advances 上发表了一项研究。
他们报告说,1969 年至1971 年间,核心的旋转速度比外层慢。他们还表示,1971年之后,核心的旋转速度比外层更快。在他们的研究中,王和维代尔使用了核试验爆炸产生的地震波数据。
地球科学家表示,地核很难理解和研究。他们对于旋转可能改变的程度和频率存在分歧。一些科学家认为旋转速度根本没有改变。他们说地震波的变化是由内核表面的变化引起的,而不是内核旋转速度的差异引起的。
Hrvoje Tkalcic 是澳大利亚国立大学的地球物理学家。他认为科学家们对最新研究会有不同意见。
他将研究地震和地震波的地震学家与“使用不完善或有限的设备研究患者身体内部器官的医生”进行了比较。他补充道:“我们对地球内部的印象仍然模糊。”
原创文章,作者:小su,如若转载,请注明出处:https://www.sudun.com/ask/130880.html
用户评论
陌上花
Wow, this is fascinating! I've always been interested in the mysteries of our planet. To think that something as fundamental as Earth's core could be changing speed is mind-blowing. It makes you wonder what other hidden secrets our world holds.
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箜篌引
This study raises so many questions. How does a change in the core's rotation affect us here on the surface? Could there be noticeable changes in climate or seismic activity? Scientists need to do more research to understand these potentially huge implications.
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残留の笑颜
I'm always up for learning something new, and this article definitely did the trick. Learning English through science articles is a great way to expand your vocabulary and understanding of the world.
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等量代换
It sounds like there’s a lot of debate surrounding this research. I’d love to see more discussion about the methods used and the evidence presented by both sides. This topic deserves careful scrutiny.
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铁树不曾开花
Is this article saying that Earth is becoming supernaturally fast? Do I need to start preparing for time travel?
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限量版女汉子
This is pretty intense stuff. Maybe we should focus on things we can actually control, like reducing pollution and protecting our planet. A changing core seems like a problem for the extremely distant future.
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发型不乱一切好办
Learning English is so cool! This article helped me pick up some new geological terms. Maybe I'll even consider becoming an earth scientist someday!
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百合的盛世恋
It's easy to get caught up in sensational headlines, but it's important to remember that science is constantly evolving. Maybe this is just a temporary fluctuation, not a fundamental change.
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凝残月
Just as long as this doesn’t mess with the seasons I'm okay with it! Seriously though, this article makes you realize how much we still don’t understand about our own planet.
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相知相惜
I’d love to see more visuals in this article – maps, charts, maybe even animations showing how the core is moving. It would help me visualize the information better.
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纯真ブ已不复存在
This article really got me thinking. What does it mean for humanity if Earth's core is changing speed? Are there any historical examples we can learn from?
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素衣青丝
Earthquakes, volcanoes, maybe even tsunamis – could this all be linked to a change in the core’s speed? This article made my imagination run wild.
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无望的后半生
Learning English through these types of articles is way easier and more interesting than traditional textbooks. Keep it up!
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枫无痕
I don't believe everything I read on the internet. Where are the peer-reviewed studies to back up these claims? Skepticism is important in scientific thinking.
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拥抱
This article sounds super cool! I'll have to check out some other science articles in English to expand my knowledge. Maybe even find a study group!
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龙吟凤
Honestly, this just feels a bit too much like science fiction for me. I need more concrete evidence before I buy into this theory.
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站上冰箱当高冷
It's amazing how much we still haven't discovered about our planet. This article is a reminder that there's always something new to learn.
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你身上有刺,别扎我
Changing core speeds might be interesting, but what about the big problems facing us today? Climate change, war, poverty – those are issues that need immediate attention.
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