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標題: [新聞] 南極海面現壯觀藍色巨冰似海浪被迅速凍結 [打印本頁]

作者: vandas    時間: 2012-11-28 04:30 PM     標題: 南極海面現壯觀藍色巨冰似海浪被迅速凍結

  近日,科學家在南極拍攝到了震撼人心的自然景像。冰凍的海面上凸起了一塊高15米的藍色巨冰,看上去就像是海上的大浪迅速凍結後形成的“冰浪”,十分壯觀。

  科學家稱,這種“冰浪”確實是天然形成的,但並非被凍住的海浪,而是通過冰層的一系列擠壓形成的。夏季,南極海面表層冰融化,新的冰層就擠到了表面,形成“冰浪”。而這塊巨冰之所以會呈現藍色,是因為光線穿過厚冰時,其中的紅光被吸收,藍光被投射了出來。

  科學家還表示,冰層被擠壓時,其中包裹的空氣會被釋放出來。但如果空氣沒有被擠壓出來,就會反射光線。這樣,巨冰就會呈現白色。

The 'frozen wave': Stunning 50ft blue ice monolith captured in the Antarctic

Dramatic images appear to show a frozen wave but the phenomenon is actually caused by compressed ice
The ice appears blue because it absorbs light from the 'red end' of the spectrum and throws out the blue light

At first glance these beautiful images from the Antarctic appear to show 50-ft tall waves that have been instantly frozen as they break.
Some people have posted the pictures online, taken by scientist Tony Travouillon at Dumont D'Urville, with a description claiming they are a tsunami wave which was frozen.

But although email chains and internet forums back this claim up, what is really pictured is the natural phenomenon of blue ice.


Imposing: Although this is not, as widely rumoured, a wave frozen while breaking, it is still an incredible phenomenon


Frozen towers: This blue ice is created because ice bubbles are compressed and light at the red end of the spectrum is absorbed


Hard work: Mr Travouillon travelled to the Antarctic while studying for his PhD from the Australian university of New South Wales, between 2001-2004

These freezing blue towers were created when ice was compressed and the trapped air bubbles were squeezed out.

During the summer the surface ice melts and new ice layers compress on top.

The ice appears blue because when when light passes through thick ice, blue light is transmitted back out but red light is absorbed.

If the bubbles were not compressed they would scatter the light, meaning it would all be reflected back out and it would appear white.

Larry Gedney wrote about blue snow and ice on the Alaska Science Forum.

He explained: 'It takes an appreciable thickness of pure ice to absorb enough red light so that only the blue is transmitted. You can see the effect in snow at fairly shallow depths because the light is bounced around repeatedly between ice grains, losing a little red at each bounce.


Hoax: Many people have posted the pictures claiming either mistakenly or mischievously that these icy pillars were formed when a wave froze instantly as it broke


Stunning: It's easy to see why people might believe this is just part of a frozen ocean, but the truth is still interesting, if a little more complex

'You can even see a gradation of colour within a hole poked in clean, deep snow. Near the opening, the transmitted light will be yellowish.

'As the depth increases, the corer will pass through yellowish-green, greenish-blue and finally vivid blue. If the hole is deep enough, the colour and light disappear completely when all the light is absorbed.'

Mr Travouillon, employed by Caltech in California, travelled to Antarctica while working towards his PhD from the University of New South Wales, Sydney Australia.

The 35-year-old lists his nationalities as Australian and French and can speak both Spanish and French, as well as English.

On his resume he writes: 'My research is mainly experimental covering a broad knowledge of site testing, remote sensing and automatization for telescopes of all wavelengths.

'I am also particularly interested in the development and management of very large astronomical projects.

'My career goal is to work in a hybrid environment of academia and project research, involving myself in teaching and project development.'


Sturdy: Blue ice is easier for explorers to clamber over because it is safer and stronger than white ice


Experienced: Mr Travouillon, who says he is Australian and French, is fluent in English, French and Spanish, and was born in Angouleme, France


作者: lover910928    時間: 2012-11-28 04:51 PM

好漂亮的冰呀!!有没有科考船能带上我,我要去!!
作者: hkgorchid    時間: 2012-11-28 05:44 PM

It's beautiful but I fear to stand there for pictures!
作者: linelife    時間: 2012-11-28 05:57 PM

so gorgeous, likes a piece of blue color salmon fillet (giant size).
作者: goeyt    時間: 2012-11-28 07:27 PM

很壯觀-急速冷凍-感謝分享
作者: 逍遥龙少    時間: 2012-11-30 09:11 AM

好壮观,能身临其境就好了
作者: minibus    時間: 2012-11-30 11:29 AM

so pretty la

save $$ now and plan to go

Thanks
作者: ric211    時間: 2012-11-30 05:14 PM

在現場看一定很震撼~~
作者: neverrealize    時間: 2012-11-30 08:35 PM

wow
看起來真壯觀
大自然果真是無奇不有
作者: register2388    時間: 2012-11-30 10:24 PM

漂亮又壯觀,好!
作者: hamtu5168    時間: 2012-12-2 04:00 PM

急凍海浪?「藍光」冰浪震撼南極

NOWnews.com 今日新聞網

2012年11月28日 00:01



急凍海浪?「藍光」冰浪震撼南極


國際中心/綜合報導

近日,科學家在南極拍攝到了震撼人心的自然景象。冰凍的海面上凸起了一塊高15公尺的藍色巨冰,看上去就像是海上的大浪迅速凍結後形成的冰浪,十分壯觀。

科學家說,這種冰浪確實是天然形成的,但並非被凍住的海浪,而是透過冰層的一系列擠壓形成的。夏季,南極海面表層冰融化,新的冰層就擠到了表面,形成冰浪。而這塊巨冰之所以會呈現藍色,是因為光線穿過厚冰時,其中的紅光被吸收,藍光被投射了出來。

科學家還表示,冰層被擠壓時,其中包裹的空氣會被釋放出來。但如果空氣沒有被擠壓出來,就會反射光線。這樣,巨冰就會呈現白色。

作者: ohdiu    時間: 2012-12-20 11:45 PM

真的很壯觀。這些圖片如果沒有科學家或是自然生態攝影師去拍的話,大概這輩子也不會看得到。

一陣子沒有來訪生態區,這天看過櫻花、看過紐西蘭的野生動物,現在是南極的大自然奇觀,好像心情也沒那麼鬱卒。
作者: nicko000    時間: 2012-12-21 12:16 AM

好壯觀既相呀, 若能夠親身現場睇睇就好啦
作者: winnie_9691    時間: 2012-12-21 02:06 PM

好厉害的作品啊
作者: andylim22    時間: 2012-12-21 04:24 PM

1# vandas
我想看,谢谢分享!!!
作者: mzl47    時間: 2012-12-22 04:56 AM

niceeeeeeeee
作者: eggo88    時間: 2012-12-22 05:50 AM

This was beautifully created and crafted by nature producing such a wonderful phenomenon. One could only wish it would never be affected by the global warming crisis affecting the entire planet earth.
作者: Icedtea_822    時間: 2012-12-22 05:55 AM

覺得人比起大自然,好渺小。。。。
作者: pipiq    時間: 2012-12-23 04:36 PM

自然界鬼斧神工的景象總讓人感到驚奇不已,若能親臨現場,這樣壯觀又不可思議的急凍海浪必定令人永生難忘呢!
作者: Sheng6628    時間: 2012-12-24 10:32 AM

unbelievable
作者: lnasxywl    時間: 2012-12-24 12:06 PM

漂亮极了。很可爱。
作者: 牙擦蘇    時間: 2012-12-24 12:22 PM

漆黑的宇宙中最美丽的蓝色星球,孕育着丰富多彩的生命与景观,希望人类能好好珍惜及爱护我们唯一的家!!!
作者: hsbcboc01    時間: 2012-12-24 04:13 PM

very beautiful, tks for sharing
作者: pc_club    時間: 2012-12-24 06:10 PM

太誇張了~
作者: NK34    時間: 2012-12-24 07:20 PM

超靚啊.但如果一起溶化就慘了
作者: chengpengfei139    時間: 2012-12-25 05:40 PM

瞬间形成? 不太可能把~~
作者: endue    時間: 2012-12-26 03:04 PM

thanks for sharing!!!




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