久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

Jiaolong plumbs deepest region of the ocean

By Zhang Zhihao | China Daily | Updated: 2017-05-24 07:33

<EM>Jiaolong</EM> plumbs deepest region of the ocean

Jiaolong, China's manned submersible, is about to dive into the South China Sea, May 10, 2017. [Photo/Xinhua]

The Jiaolong, China's manned submersible, dived in the Mariana Trench on Tuesday, making the first of a series dives for the third stage of the country's 38th oceanic expedition.

The craft reached a depth of 4.8 kilometers at 9:49 am and remained submerged for about nine hours in all, said Tang Jialing, the pilot of the Jiaolong.

The Mariana Trench-in the western Pacific Ocean about 200 km southwest of Guam-is the site of Challenger Deep, the deepest valley in the ocean. Tuesday's dive was made along the northern slope of the 11-km-deep valley.

<EM>Jiaolong</EM> plumbs deepest region of the ocean

In the next few days, the Jiaolong will make another dive to 6.3 kilometers and three more to 6.7 kilometers in the Marina Trench.

During these dives, it will collect samples of seawater, sediment, rocks and deep sea creatures to study the trench's geochemical and biological activity, Tang said. In later missions, the Jiaolong will retrieve a deep-sea sampler planted there at a depth of 6 km last year.

Next, the expedition will sail to the Yap Trench, on the southern tip of the Marina Trench, and make five more dives.

The 38th oceanic expedition, which began on Feb 6, is the longest and includes the most missions yet for the Jiaolong. The first of its three stages took place in the Indian Ocean for 59 days, and the second in the South China Sea for 34 days, according to China's National Deep Sea Center.

The third stage began on May 16, when the scientific expedition ship Xiangyanghong 09 set sail for the Mariana and Yap trenches carrying the submersible and 96 scientists. The entire expedition is planned to end on June 9, when the Xiangyanghong 09 returns to port.

The deep sea is often regarded as Earth's last frontier. Its exploration can yield better understanding of how organisms adapt and live in the world's most extreme environment, said Wu Changbin, commander of the expedition's third stage.

The ocean's floor in the Mariana Trench is dark place with water temperatures from 1 to 4 C and atmospheric pressure 1,000 times greater than at the sea's surface.

Yet life blossoms, due to hot water vents that emit chemicals such as hydrogen sulfide, which bacteria and other microbes can feed on and in turn support a variety of exotic creatures ranging from giant amoebas to bioluminescent fish.

Chinese scientists discovered 27 such vents in the Indian Ocean during the first stage of the expedition. In the South China Sea, they found rare bio examples such as sea lily and a branch of red coral attached to polymetallic nodules-clusters of minerals containing more than 10 elements, ranging from cobalt to manganese.

The Jiaolong, named after a mythical dragon, reached its maximum depth yet of 7,062 meters in the Mariana Trench in June 2012. China is building a new mother ship to operate and support the Jiaolong, and it is expected to enter service in 2019.

Xinhua contributed to this story.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 国产成人精品日本亚洲网址 | 太平公主三级dvd | 91香蕉视频成人 | 亚洲精品午夜一区二区在线观看 | 一级一级毛片免费播放 | 国产合集91合集久久日 | 国产日产久久高清欧美一区 | 国产一区二区亚洲精品 | 欧美视频一区二区专区 | 中文字幕精品一区二区三区视频 | 亚洲大片 | 国产视频综合 | 青久草视频 | 免费成年人在线视频 | u影一族亚洲精品欧美激情 va欧美 | 明星国产欧美日韩在线观看 | 高清国产亚洲va精品 | 国产丝袜不卡一区二区 | 天天躁夜夜躁狠狠躁2024 | 国产在线播放一区 | 久久一区二区精品综合 | 欧美刺激午夜性久久久久久久 | 成人看片黄a在线看 | 国产三级国产精品国产国在线观看 | 青青热久久国产久精品 | 91福利国产在线观看香蕉 | 国产免费人视频在线观看免费 | 一级床上爽高清播放 | a级毛片网站 | 国产精品一国产精品 | 成在线人视频免费视频 | 一级片免费观看视频 | 日韩三及片| 国产成人一区二区三区 | 国产精品久久久久久久久免费hd | 亚州黄色网址 | 风流慈禧一级毛片在线播放 | 巨大热杵在腿间进进出出视频 | 久久精品免观看国产成人 | 91成人免费观看在线观看 | 亚洲精品第一区二区在线 |