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關於海水鹽度The Salinity of Ocean Waters

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ing-bottom: 108.84%;">關於海水鹽度The Salinity of Ocean Waters

如果海水鹽度分析,發現因地而異只有輕微。然而,有些小的變化是重要的。有三個,導致海洋的鹽度變化的基本過程。其中之一是來自海洋的水通過蒸發---減法把液態水轉化爲水蒸氣水的手段。通過這種方式,鹽度的增加,由於鹽留了下來。如果這種方式走向極端,當然,白色的鹽晶體將會被甩在後面。

與蒸發相反的是降水,如降雨,由此水被加入海。這裏的海水被稀釋,從而使鹽度降低。這可能發生在大量降雨的地區,或者在江河入海流量沿海地區。因此,鹽度增加了可減少水分蒸發,或由淡水徑流增加降水或下降

一般來說,在陽光很強烈的熱帶地區,海水的鹽度略高於它在世界上那些沒有那樣多的蒸發其他部分。同樣,在沿海地區在江河稀釋海水,海水鹽度略低於其它海區低。

第三個過程,可以變更鹽度關聯的形成和海冰融化。海水凍結時,溶於其中的物質被留了下來。在這種方式下,海水直接的物質被留了下來。在這種方式下,新鮮的海水形成的正下方的海冰有更高的鹽度比以前出現的冰。當然,當冰融化的時候,會降低周圍水中的鹽度。

在南極洲威德爾海,在濃度最大的海水形成了一個結冰過程,從而增加了冷水鹽度的結果。這沉重的海水下沉,被發現在世界海洋的深水域。

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