China made several breakthroughs in deep sea exploration as a team sailed 7,929 nautical miles to explore the trenches in the west Pacific Ocean, the Chinese Academy of Sciences (CAS) said Thursday.
The 68-day expedition made China the first to obtain 10,000-meter-deep artificial seismic profile data with a domestic ocean bottom seismograph, at the Challenger Deep in the Mariana Trench, the CAS said in a statement.
The team returned to Sanya in south China's Hainan Province Thursday.
The Challenger Deep at around 11,000 meters in the Mariana Trench is the deepest part of the ocean.
Haiyi, China's domestic underwater glider, reached a record depth of 6,329 meters in the Mariana Trench.
During the trip, submersible Haidou dived to over 10,000 meters five times. It reached the sea bottom at a depth of 10,886 meters, the first time China has conducted unmanned navigation and video transmission at over 10,000 meters.
The expedition team also sampled snailfish in the Yap Trench at a depth of 7,884 meters, the maximum depth where China has sampled fish. (Xinhua)
China's unmanned submersible dived to a depth of 10,767 meters, setting a new record for the country, the Chinese Academy of Sciences (CAS) said Tuesday. "Haidou" set the record at the Mariana Trench in the West Pacific, the deepest area in the world, during a scientific expedition from June 22 to Aug. 12.
The voyage taken by the research ship Tan Suo Yi Hao to the Marianas Trench from late June until Aug 12 made a series of breakthroughs in deep-sea scientific exploration, both domestically and internationally, according to scientists from the Chinese Academy of Sciences. The breakthroughs include a successful nitrogen cycle experiment conducted by the Yuanwei Shiyan ("on-site experiment") deep-sea elevator, a research device that is lowered with an anchor and was developed by the Institute of Deep-Sea Science and Engineering of CAS.
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