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> Blue Silicon Valley

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.

仪征市| 旅游| 新乡市| 绥宁县| 乌拉特前旗| 温泉县| 哈尔滨市| 汾西县| 灯塔市| 延寿县| 九台市| 疏勒县| 什邡市| 马鞍山市| 凤台县| 嘉义市| 肥乡县| 罗江县| 来凤县| 甘谷县| 田东县| 安达市| 石屏县| 通许县| 桓仁| 泰安市| 仪征市| 渝中区| 平陆县| 河池市| 麦盖提县| 泰安市| 元谋县| 西乌珠穆沁旗| 阿坝县| 吴桥县| 梁平县| 长白| 呼玛县| 萍乡市| 惠来县|