海浪為什麼會凍住?
這兩天有條新聞說有攝影師在馬薩諸塞州拍攝到:一海岸近300米處的海浪已經赫然凍結,百年難遇,堪稱奇觀!!海浪不是在翻滾運動著的么,為什麼會凍住呢?得是有多冷才能凍住啊?
海浪凍住了,說是也不是。
首先那張圖是真的無誤; 但是並不是大家想像一樣浪花正在海上滾著滾著嗖的一下就冰封萬里了。
簡單說是因為在海水結冰過程中,由於鹽水奇異冰點而逐漸冰凍形成的似浪花結構,也就是我們常說的「冰沙」。 浪花形是在結冰過程形成的,而不是先有浪花形再結的冰。
果殼上已經有人討論過了:
說的是海浪中含有較高比例的冰吧,不是翻著翻著凍在半空了。國內媒體譯介時亂起標題。
http://www.nytimes.com/2015/02/28/science/nantucket-frozen-waves.html?_r=0
How cold has it been on Nantucket? Chilly enough to freeze waves.
Last Friday, Jonathan Nimerfroh, a photographer, arrived on the beach and saw an unusual sight: slow-moving waves of slush.
「I just noticed a really bizarre horizon,」 said Mr. Nimerfroh, who is also a surfer. 「The snow was up to my knees, getting to the water. I saw these crazy half-frozen waves. Usually on a summer day you can hear the waves crashing, but it was absolutely silent. It was like I had earplugs in my ears.」
引用自 @吳小咸
How cold has it been on Nantucket? Chilly enough to freeze waves.
Last Friday, Jonathan Nimerfroh, a photographer, arrived on the beach and saw an unusual sight:slow-moving waves of slush.
「I just noticed a really bizarre horizon,」 said Mr. Nimerfroh, who is also a surfer. 「The snow was up to my knees, getting to the water. I saw these crazy half-frozen waves. Usually on a summer day you can hear the waves crashing, but it was absolutely silent. It was like I had earplugs in my ears.」
也就是說,這並不是被凍住的波浪,而是波動的冰沙,類似於夏天喝的那種,攝影師捕捉到的是冰沙捲起波浪的一個瞬間,它只是在照片里被「凍住了」,現實中是還是流體,只不過很粘稠;
Update 4/23/2017 : 類似於711里的Slurpee
Update 5/7/2017 : 建議去youtube搜 Ice Shove
瞬間極度溫降
明顯沒凍住,水花都是凌空的
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