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[PBS系列]：磁暴Magnetic Storm-1080P高清迅雷网盘下载
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由Gene Galousha主持并由PBS出版的科学纪录片，是PBS Nova系列电视剧的一部分，于2003年播出-英语旁白Science Documentary hosted by Gene Galousha and published by PBS broadcasted as part of PBS Nova series in 2003- English narration
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就像一部科幻B电影的情节一样，地下深处发生了奇怪的事情，地球液态金属核的不断旋转产生了一个看不见的磁力场，该磁场屏蔽了我们的星球免受太空中有害辐射的影响。逐渐地，这个领域变得越来越弱。我们能否走向消磁的世界末日，使我们无法抵抗太阳风和宇宙射线的致命影响？研究这个问题的科学家从火星到处都在研究，火星遭受了40亿年前的一场磁危机，从那时起一直没有磁场，可观的气氛，甚至从此以后一直没有生命，一直到实验室进行实验。马里兰大学，由物理学家丹·拉思罗普（DanLathrop）领导的团队在地球地球上重建了铁水发电机?通过使用240磅重的爆炸性熔融钠制成铁心。地球磁场最明显的迹象是极光，这是由于太空中带电粒子流入南北磁极时与大气相互作用而引起的。以目前的速度，地球的磁场可能会在几个世纪之内消失，从而暴露出从太空中带电粒子无情地爆炸，对大气和生命产生不可预测的后果。其他可能性：磁场可能会停止减弱并开始增强，或者可能减弱到突然反转极性的程度-也就是说，指南针开始指向南磁极，这种极性反转似乎平均每25万年发生一次，使我们早就该在南北磁极之间进行另一次交换了。加州大学圣克鲁斯分校的科学家Gary Glatzmaier实际上观察到了这种逆转，因为它们发生在计算机模拟中。这些虚拟事件显示出与地球磁场当前行为的惊人相似之处，这表明我们将要经历另一次逆转，尽管这将需要几个世纪来发展。一些研究人员认为，我们已经处在过渡阶段，随着越来越多的磁异常区域，磁场线正在以错误的方式移动，从而使我们的防护罩信号变得越来越弱和混乱。同样，加利福尼亚大学圣克鲁斯分校的地球物理学家罗布·科伊（Rob Coe）甚至可能在俄勒冈州发现了一条熔岩记录，该记录记录了在逆转期间发生的磁性混乱情况。出现的情况可能不符合好莱坞的灾难标准，Like the plot of a sci-fi B movie, something weird is happening deepunderground where the constant spin of Earth's liquid metallic core generatesan invisible magnetic force field that shields our planet from harmfulradiation in space. Gradually, the field is growing weaker. Could we beheadingfor a demagnetized doomsday that will leave us defenceless against the lethaleffects of solar wind and cosmic rays? "Magnetic Storm" looks into ourpotentially unsettling magnetic future.Scientists studying the problem are looking everywhere from Mars, whichsuffered a magnetic crisis four billion years ago and has been devoid of amagnetic field, an appreciable atmosphere, and possibly life ever since, to alaboratory at the University of Maryland, where a team headed by physicist DanLathrop has re-created the molten iron dynamo at Earth's core by using 240pounds of highly explosive molten sodium. The most visible signs of Earth'smagnetic field are auroras, which are caused by charged particles from spaceinteracting with the atmosphere as they flow into the north and south magneticpoles.At the present rate, Earth's magnetic field could be gone within a fewcenturies, exposing the planet to the relentless blast of charged particlesfrom space with unpredictable consequences for the atmosphere and life. Otherpossibilities: the field could stop weakening and begin to strengthen, or itcould weaken to the point that it suddenly flips polarity-that is, compassesbegin to point to the South Magnetic Pole.Such a reversal of polarity seems to happen every 250,000 years on average,making us long overdue for another swap between the north and south magneticpoles. Scientist Gary Glatzmaier of the University of California at Santa Cruzhas actually observed such reversals, as they occur in computer simulations.These virtual events show striking similarities to the current behavior ofEarth's magnetic field and suggest we are about to experience another reversal,though it will take centuries to unfold. Some researchers believe we arealready in the transition phase, with growing areas of magnetic anomaly-wherefield lines are moving the wrong way-signaling an ever weaker and chaotic statefor our protective shield.Geophysicist Rob Coe, also of the University of California at Santa Cruz, mayhave even found a lava record in Oregon that charts the magnetic mayhem thatensues during a period of reversal. The picture that emerges may not be up toHollywood disaster standards, but considering that human civilization has neverhad to cope with such a situation before, it could be an interesting andchallenging time
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【技术参数】——
视频编码: DivX5
比特率: 1594 kbps
Video 分辨率: 640*384
Video 画面比例: 16:9
音频编码: AC3
音频比特率: 192 kbps
Audio 声道数: 2
分集时长: 53:47
分集数: 1
体积: 687 MB
发布人： HankEvans【Technical Specs】——
Video Codec: DivX5
Video Bitrate: 1594 kbps
Video Resolution: 640*384
Video Aspect Ratio: 16:9
Audio Codec: AC3
Audio BitRate: 192 kbps
Audio Channels: 2
RunTime Per Part: 53:47
Number Of Parts: 1
Part Size: 687 MB
Ripped by HankEvans
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相关纪录片：
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Links
Magnetic Storm@PBS.org
Release Post
MVGroup.org (torrent)
DocsPT.com
FileHeaven.org
ShareVirus.com
VeryCD.com
Related Documentaries
Doomsday: 10 Ways the World Will End
When North Goes South
Earth's Force Field
Electronic Armageddon
The Merry Dancers
Magnetism
Message in the Rocks
The Earth's Core
The Sunspot Mystery
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发表于 2020-7-13 23:41:07
发表于 2020-8-7 11:45:01