Sub vessel to attempt record-setting dive

    Updated: 2012-02-13 07:59

    By Wang Qian (China Daily)

      Comments() Print Mail Large Medium  Small 分享按鈕 0

    BEIJING - High underwater pressure will be the greatest danger that Jiaolong, China's manned deep-sea vessel, will contend with when it attempts to make the deepest dive on record this year, a senior official said.

    "Jiaolong will make a 7,000-meter test dive this year after several improvements are made to the submersible vessel," Jin Jiancai, secretary-general of the China Ocean Mineral Resources Research and Development Association, said over the weekend.

    Before attempting the record-breaking dive, the vessel will make a roughly 3,000-meter test dive in the South China Sea in March or April, he said.

    He did not say when the 7,000-meter dive is to take place.

    Underwater, pressure increases at the rate of one atmosphere for every 10 meters of depth. One atmosphere is equal to about 10 metric tons of force per square meter.

    If the planned dive is successful, Jiaolong will have proven itself capable of reaching nearly any seabed in the world. China will also hold the record for performing the deepest dive, surpassing Japan, whose Shinkai 6500 dove 6,527 meters in August 1989.

    Jiaolong - designed to reach a maximum depth of 7,000 meters - carried three people to 5,188 meters below sea level in a test dive in international waters in the northeastern Pacific Ocean last year, indicating the vessel is capable of reaching more than 70 percent of the planet's seabeds.

    "If Jiaolong succeeds in the 7,000-meter dive, the vessel will play an important role in future scientific research and mineral exploration in the deep sea," said Tao Chunhui, professor of the Second Institute of Oceanography and chief scientist on the Chinese scientific research ship Dayang Yihao, or Ocean No 1.

    According to the 12th Five-Year Plan (2011-15) released by the State Oceanic Administration on Friday, China is working faster to build both a ship that will take deep-sea vessels to dive sites and another vessel that will conduct scientific research in the ocean and explore the underwater world.

    Over the next 20 years, China will push its technical capabilities to catch up with advanced nations in conducting deep-sea research. Scientists say the ocean floor contains rich deposits of a range of potentially valuable minerals, but the extreme depths pose obstacles to gathering them.

    Last year, China became the first country approved by the International Seabed Authority to look for polymetallic sulphide deposits, a recently discovered mineral source, in the Southwest Indian Ridge, a tectonic plate boundary on the floor of the Indian Ocean.

    In 2001, the China Ocean Mineral Resources Research and Development Association signed a 15-year contract with the seabed authority to search 150,000 square kilometers of seabed for polymetallic nodules, small rocks containing metal ore.

    中文字幕日韩一区| 人妻丰满熟妇AV无码区HD| 国产激情无码一区二区三区| 亚洲精品无码99在线观看| 一本色道无码不卡在线观看 | 中文字幕Av一区乱码| 亚洲国产a∨无码中文777| 中文字幕精品无码一区二区三区 | 中文字幕你懂得| 人妻无码久久精品| 在线精品无码字幕无码AV| 99久久无色码中文字幕| 日韩精品无码人妻一区二区三区| 韩日美无码精品无码| 亚洲电影中文字幕| 天堂√中文最新版在线| 69ZXX少妇内射无码| 日韩国产精品无码一区二区三区| 内射人妻少妇无码一本一道| 狠狠躁夜夜躁无码中文字幕| 欧日韩国产无码专区| 18禁无遮拦无码国产在线播放| 无码专区AAAAAA免费视频| 无码人妻丰满熟妇啪啪网站| 最近2019年中文字幕6| 亚洲日韩v无码中文字幕| 亚洲无码高清在线观看| 日韩精品无码永久免费网站| 久久精品?ⅴ无码中文字幕| 国产亚洲精久久久久久无码| 免费A级毛片av无码| 少妇伦子伦精品无码STYLES | 日韩免费无码视频一区二区三区| 精品高潮呻吟99av无码视频| 台湾无码AV一区二区三区| 亚洲AV无码一区二区三区牛牛| 欧美无乱码久久久免费午夜一区二区三区中文字幕 | 中文字幕丰满伦子无码| 中文字幕无码乱人伦| 中文字幕Av一区乱码| 亚洲激情中文字幕|