久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Top Stories

Jiaolong plumbs deepest region of the ocean

By Zhang Zhihao | China Daily | Updated: 2017-05-24 07:29

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.

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.

zhangzhihao@chinadaily.com.cn

Thrill of the chase enlivens day's dive

Tuesday was a fruitful day in the Jiaolong's first dive into the Mariana Trench.

In the morning, China's manned submersible descended 4.8 kilometers along the northern slope of Challenger Deep, the deepest spot of the trench measuring at 11 kilometers.

Staying underwater for nine hours, the vessel collected 26.3 kilograms of basalt samples, 16 liters of seawater, extensive survey data and high-definition video and photos, according to the State Oceanic Administration.

But the most intriguing rewards were the deep-sea creatures, including a sea sponge, a brittle star, two starfish and, as catch of the day, a 35-centimeter red sea cucumber.

Scientist first saw the giant sea cucumber as Jiaolong was descending to 4.8 kilometers, said Tang Jialing, the pilot of the submersible. But the visitor startled the creature and it fled "wiggling its body in an S shape, almost like dancing," he said.

Half an hour later, Tang saw a similar sea cucumber, possibly the same one. "You're not getting away this time," he said, and he caught it with the Jiaolong's mechanical claw. But the claw was too big, and the creature struggled to break free.

It eventually did escape, but swam in the wrong direction and into the sample container. "This is a very lucky day," Tang said.

Chen Xinhua, chief scientist for this third stage of China's oceanic expedition, said studying the basalt samples can help us understand the formation of the trench. The bio samples also have great research value in fields such as deep-sea biodiversity, ecosystem and biogeography.

The dive also allowed comprehensive testing of Jiaolong's systems that showed the submersible was operating smoothly, said Wu Changbin, chief commander of Tuesday's operation.

By Zhang Zhihao

Jiaolong plumbs deepest region of the ocean

The giant red sea cucumber that was collected on Tuesday. Provided To China Daily

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
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    色综合天天天天做夜夜夜夜做| 国产精品小仙女| 91精品国产色综合久久不卡电影| 日韩精品免费专区| 精品国产乱码久久久久久免费| 国产一区二区电影| 综合网在线视频| 欧美日韩电影在线播放| 久久精品国产精品亚洲红杏| 国产日本亚洲高清| 在线一区二区观看| 久久国产尿小便嘘嘘尿| 国产精品美女视频| 欧美吞精做爰啪啪高潮| 久久不见久久见中文字幕免费| 中文幕一区二区三区久久蜜桃| 欧美在线免费观看视频| 久久国产精品一区二区| 国产精品国产三级国产aⅴ无密码 国产精品国产三级国产aⅴ原创 | 国产精品一线二线三线| 亚洲天堂精品视频| 欧美电影影音先锋| 国产91丝袜在线播放0| 亚洲综合小说图片| 2017欧美狠狠色| 色av综合在线| 国产一区二区三区香蕉| 亚洲精品少妇30p| 精品国产sm最大网站免费看| 91污在线观看| 精品一区二区三区在线观看| 在线电影院国产精品| 国产成人综合在线观看| 亚洲国产精品自拍| 国产女人水真多18毛片18精品视频| 欧美在线观看视频一区二区三区 | 国产精品一区二区三区99| 亚洲精品自拍动漫在线| 欧美精品一区二区三区久久久| 一本久久a久久精品亚洲| 激情文学综合网| 亚洲国产一区在线观看| 国产欧美日韩在线| 欧美一区二区成人6969| 91农村精品一区二区在线| 激情久久久久久久久久久久久久久久| 亚洲欧美精品午睡沙发| 26uuu欧美| 7777精品伊人久久久大香线蕉经典版下载 | 日韩精品免费专区| 亚洲视频一区二区在线| 久久先锋影音av| 在线不卡a资源高清| 91亚洲国产成人精品一区二三 | 成人久久视频在线观看| 久久精品国产精品亚洲精品| 亚洲香肠在线观看| 国产精品久久久久久久久动漫| 欧美tickling网站挠脚心| 欧洲人成人精品| 99精品国产热久久91蜜凸| 国产一区二区久久| 免费观看久久久4p| 亚洲成人精品一区二区| 亚洲人成精品久久久久| 国产偷国产偷亚洲高清人白洁| 欧美一级日韩免费不卡| 欧美三区在线观看| 91片在线免费观看| 成人aa视频在线观看| 免费成人在线观看| 亚洲视频免费在线观看| 欧美电视剧在线观看完整版| 日本精品一区二区三区高清| 国产成人免费xxxxxxxx| 麻豆精品一区二区综合av| 亚洲成a天堂v人片| 亚洲激情男女视频| 中文字幕一区av| 欧美经典一区二区三区| 久久丝袜美腿综合| 欧美成va人片在线观看| 欧美一区二区免费| 欧美伦理影视网| 欧美日韩国产电影| 欧美日韩国产在线观看| 欧美日韩一区二区三区免费看 | 在线精品亚洲一区二区不卡| 99久久精品国产麻豆演员表| 成人精品视频网站| 成人午夜av在线| 成人性生交大片| 成人精品gif动图一区| 成人中文字幕电影| 成人国产精品免费观看| 成人高清免费观看| 99免费精品视频| 欧美亚洲动漫精品| 播五月开心婷婷综合| 狠狠色狠狠色综合日日91app| 亚洲欧美日韩国产综合在线| 国产精品久久久久永久免费观看| 国产欧美日韩激情| 中文字幕久久午夜不卡| 国产精品三级在线观看| 国产精品传媒视频| 亚洲欧美一区二区久久| 一区二区三区四区在线播放 | 国产精品久久三| 欧美唯美清纯偷拍| 欧美日韩在线播放| 在线播放中文一区| 日韩美女一区二区三区四区| 精品盗摄一区二区三区| 久久久久久久精| 国产精品亲子乱子伦xxxx裸| 亚洲特黄一级片| 亚洲国产精品影院| 蜜桃视频一区二区三区在线观看| 激情欧美一区二区| 成人黄动漫网站免费app| 一本大道av伊人久久综合| 欧美性受xxxx| 日韩精品中文字幕在线不卡尤物| www一区二区| 中文字幕在线观看不卡视频| 夜色激情一区二区| 美女视频第一区二区三区免费观看网站| 久久国产精品99久久久久久老狼 | 久久久夜色精品亚洲| 国产精品日韩精品欧美在线| 一区二区三区资源| 日本欧美一区二区三区乱码| 国产精品自产自拍| 91丨porny丨首页| 88在线观看91蜜桃国自产| 久久日韩粉嫩一区二区三区| 国产精品高潮久久久久无| 亚洲综合在线五月| 久久99蜜桃精品| 不卡视频一二三四| 欧美日韩国产影片| www激情久久| 亚洲另类色综合网站| 蜜臀久久99精品久久久久久9| 国产成人精品综合在线观看| 91精品91久久久中77777| 日韩欧美国产电影| 17c精品麻豆一区二区免费| 日韩精品电影一区亚洲| 国产成人aaa| 欧美日韩一区二区三区免费看 | 亚洲国产aⅴ成人精品无吗| 韩日av一区二区| 色老头久久综合| 国产欧美一区二区精品仙草咪| 欧美中文字幕一区二区三区亚洲| 欧美一区二区私人影院日本| 国产欧美精品区一区二区三区| 亚洲一区二区三区在线| 国模冰冰炮一区二区| 色天天综合久久久久综合片| 日韩精品在线网站| 亚洲乱码国产乱码精品精小说 | 日韩一区二区在线观看| 国产精品久久三| 麻豆成人综合网| 色丁香久综合在线久综合在线观看| 日韩三级.com| 一区av在线播放| 国产精品99久久久| 欧美精品1区2区| 亚洲欧洲中文日韩久久av乱码| 久久狠狠亚洲综合| 欧洲精品在线观看| 中文子幕无线码一区tr| 日本网站在线观看一区二区三区| 99re成人在线| 久久久久久久一区| 日韩精品一级二级| 91色九色蝌蚪| 国产欧美日韩在线| 久久精品国产澳门| 精品视频一区三区九区| 国产精品福利影院| 国精产品一区一区三区mba桃花| 欧美午夜一区二区| 亚洲欧美在线视频观看| 国产九色精品成人porny| 555www色欧美视频| 亚洲在线免费播放| 99精品视频在线播放观看| 久久久久国产精品免费免费搜索| 天堂va蜜桃一区二区三区| 日本道在线观看一区二区| 国产精品女主播av| 国产乱码精品一区二区三区av| 91精品国产高清一区二区三区蜜臀 | 欧美激情综合五月色丁香| 精品中文字幕一区二区小辣椒|