Churning in the Chukchi Sea(翻腾的 Chukchi 海)


from https://www.nasa.gov/sites/default/files/thumbnails/image/chukchi_oli_2018169_lrg_0.jpg
上图经过了压缩,原图有大约 2.9 MB (2,880,992 Byte), 原图请访问 HERE .
The picture above has been compressed. The original picture is about 2.9 MB (2,880,992 Byte) and it’s HERE .

Regardless of the amount of winter ice cover, the waters off of the Alaskan coast usually come alive each spring with blooms of phytoplankton. These blooms can form striking patterns of blue and green seawater, such as those visible in this image of the Chukchi Sea acquired on June 18, 2018, by the Operational Land Imager (OLI) on Landsat 8.

不考虑冬季冰盖的数量,基本上每年的春天,阿拉斯加海岸附近的水域都会随着浮游植物的盛放而显得生机勃勃.这些盛放的浮游植物可以形成引人注目的蓝色或者绿色的海水,例如这张由地球资源卫星8号上的军用陆地成像仪于2018年6月18日在 Chukchi 海拍摄到的图像.

Blooms are a common occurrence this time of year. But the regularity of the blooms and their simple beauty belie the complexity of this ecosystem.

每年的这个时候,浮游植物的盛开都是一种常见的现象.但是盛放的规律性和他们简单的美丽掩饰了这个生态系统的复杂性.

Two main water masses flow from the Bering Strait and enter the southern Chukchi. One type, known as “Bering Sea Water,” is cool, salty, and rich in nutrients. This water fuels most of the phytoplankton growth, primarily diatoms, which are likely the main reason for the colorful green waters pictured here. (Sediments could also be contributing to the bright green areas.)

两个主要的水团从 Bering 海峡流入 Chukchi 的南部.其中一种被称作" Bering 海水域",这里的水很凉,有点咸并且富有营养.这种水为大部分浮游植物,例如硅藻类的生长提供了动力,这可能是图中绿色海水的主要成因.(沉积物也为明亮的绿色区域的形成贡献了作用.)

The second mass of seawater is known as “Alaskan Coastal Water,” which is warmer, less salty, and nutrient-poor. Diatom growth is usually lower in these waters, but coccolithophores can do well here. Some areas pictured here could contain this type of plankton, known to impart a milky turquoise hue to the water with their plates of calcium carbonate armor.

海中的第二个水团被称作"阿拉斯加沿岸水域",这里的水比较温暖,不含盐分并且缺乏营养物质.硅藻类在这些水域中的生长速度通常比较慢,但是颗石藻在这里却可以很好地生存.图中的一些区域就可能含有这种浮游植物,它们用碳酸钙盔甲的盘子向水中注入乳白色和绿松石色的色彩.

While experts expect blooms to consistently show up in these waters from year to year, the size is less consistent, and the reason is not clear.

尽管专家预测在这些水域每年都会出现浮游植物的盛放,但是,每年的规模大小并不一致,原因尚不清楚.

Image Credit: NASA/U. S. Geological Survey/Norman Kuring/Kathryn Hansen
Last Updated: July 18, 2018
Editor: Yvette Smith


声明:
本文中的图片和英文原文均来自NASA,由荒原之梦对原文进行翻译,译文仅供参考。
原文链接:https://www.nasa.gov/image-feature/churning-in-the-chukchi-sea
原文标题:Churning in the Chukchi Sea

Manifesto:
The picture in this article and the English original text are all from NASA, zhaokaifeng.com translated the original text and translated for reference only.
Original link: https://www.nasa.gov/image-feature/churning-in-the-chukchi-sea
Original title: Churning in the Chukchi Sea

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