英语翻译Groundbreaking research by two French geophysicists to shed some light on the mystery.Using 80 metres of deep sea sediment core,they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million y

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英语翻译GroundbreakingresearchbytwoFrenchgeophysiciststoshedsomelightonthemystery.Using80metresofdeepsea

英语翻译Groundbreaking research by two French geophysicists to shed some light on the mystery.Using 80 metres of deep sea sediment core,they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million y
英语翻译
Groundbreaking research by two French geophysicists to shed some light on the mystery.Using 80 metres of deep sea sediment core,they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million years.The analysis reveals that intensity appears to fluctuate with a clear,well-defined rhythm.Although the strength of the magnetic field varies irregularly during the short terra,there seems to be an inevitable long-term decline preceding each polarity reversal.When the poles flip-a process that takes several hundred thousand years-the magnetic field rapidly regains its strength and the cycle is repeated.

英语翻译Groundbreaking research by two French geophysicists to shed some light on the mystery.Using 80 metres of deep sea sediment core,they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million y
两个法国的地球物理学者开展创新性研究来揭开磁场变化的奥秘.通过利用80米深处的深海沉积物核心,他们测量了四百万年里的11个强磁场强度的大小变化.它揭露了磁场强度的变化有一个清楚地、明确的规律,尽管在一小段时间里磁场强度的变化是没有规律的.它同样揭示了每一个强磁场一开始将不可避免的衰弱,不过当这些磁点经过了几十万年后它的强度将迅速地恢复,这于是就称为了一个周而复始的循环
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