国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

 
Home> News

Jiaolong manned deep-sea submersible completes expedition

By Xie Chuanjiao and Zhao Lei in Qingdao, Shandong province ( chinadaily.com.cn )

Updated: 2017-06-23

  Print Mail Large Medium  Small 0

China's Jiaolong manned deep-sea submersible returned to its homeport in Qingdao, Shandong province, on Friday morning.

The submersible's mother ship, Xiangyanghong 09, returned to the National Deep-Sea Base in the coastal city around 8:30 am, bringing to an end the nation's 38th oceanic expedition and the submersible's five-year trial run.

During the 138-day expedition that started on Feb 6, Xiangyanghong 09 sailed nearly 34,000 kilometers into the South China Sea, northwestern Indian and northwestern Pacific oceans, while Jiaolong conducted 30 dives to make scientific investigations and collect samples, said a news release from the State Oceanic Administration.

Researchers from the State Oceanic Administration, Ministry of Education, Chinese Academy of Sciences and China Geological Survey took the Jiaolong deep into the water and collected 624.6 kilograms of seabed rocks, 5,968 liters of seawater as well as 2,115 marine creatures, it added.

During the expedition, the submersible made five dives in the Mariana Trench, the world's deepest known trench, and Yap Trench, both in western Pacific Ocean. These operations have enabled scientists to better understand the trenches' geochemical and biological conditions, according to the news release.

After this mission, Jiaolong will receive a yearlong overhaul and technical upgrade before starting its formal operation, which, compared with the trial run, will travel farther away from China and deeper into the ocean and will conduct more dives each year, he said.

Named after a mythical dragon, Jiaolong is China's first manned deep-sea research submersible. It was developed by Chinese designers starting 2002 and entered service in 2010, making China the fifth country in the world having deep-sea exploration technology after the United States, France, Russia and Japan.

During a test dive in June 2012, Jiaolong reached its deepest depth - 7,062 meters - in the Mariana Trench. From January 2013, the submersible began a five-year trial run, during which time it made 152 dives.

平和县| 济南市| 石首市| 兖州市| 老河口市| 英德市| 梅州市| 武城县| 阿拉善左旗| 郧西县| 凌源市| 临夏县| 佛冈县| 镇江市| 于田县| 明溪县| 高邑县| 石门县| 河北省| 竹山县| 托里县| 荥阳市| 大姚县| 博爱县| 天气| 霞浦县| 乐都县| 金溪县| 水富县| 甘南县| 东平县| 大竹县| 张掖市| 涿鹿县| 安庆市| 新蔡县| 东兰县| 宾川县| 维西| 河西区| 大宁县|