在深海中,由有机物所组成的碎屑像雪花一样不断飘落,称作海洋雪。海洋雪主要由有机物碎屑所组成,起源于海洋上部透光层的有机物生产活动。主要包含已死或将死的动植物(浮游生物)、原生生物(如硅藻)、细菌、粪便颗粒、泥沙和尘土等。
...出现的36亿年前,天空是那么蓝,水是那么绿,海洋已经有生命活动,生长、繁殖、死亡,周而复始,死亡残体像海洋雪(marine snow)一样飘落到海底,残体在压力和温度作用下逐步分解为甲烷,甲烷与低温海水结合形成天然气水合物(natural gas hydrates,NGH),即可...
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瑞雪海洋 ruixue ocean
石林冰雪海洋世界 stone forest ice and snow ocean world
费雪牌海洋奇观声音表 Fisher-Price Ocean WondersSounds Table
随着大量的水通过蒸发被抽离,并以雪的形式沉淀形成冰川冰,海洋中氧同位素的比率就发生了变化。
The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.
根据我的记忆,水往复地变化,从湖泊和海洋里的水变成水蒸气,然后当它以雨或雪——也就是降水的形式落下时又变成水。
From what I remember, water changes back and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.
这项运动很安全,价格适中,并且风景也美极了——蓝色的湖和顶部覆雪的山,冰川和海洋,峡湾和海滩。
It is safe, decently priced and the landscapes are stunning - blue lakes and snow -capped mountains, glaciers and the ocean, fiords and beaches.
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