China's launch of the instrument to observe the oceanic phenomenon in the South China Sea

The Scientific Expedition 3 of the Experiment No. 3 of the South China Sea Institute of Oceanology of the Chinese Academy of Sciences recently put a number of multi-functional submersible standard observation systems in the Dalang District of the Lushuikou area of ​​the South China Sea under harsh sea conditions. The system will generate, disseminate and evolve the ocean waves in the South China Sea. Wait for the oceanic phenomenon to be observed for more than half a year.

The mission of the Chinese Academy of Sciences in this South China Sea voyage in autumn is to conduct a scientific survey of the South China Sea Ocean Section under adverse weather conditions in the autumn and winter. The voyage passed 33 days of maritime survey operations and sailed 4,450 nautical miles. It successfully returned home after successfully completing its mission in the recent past.

During the voyage, it has been affected by the northeast monsoon. The operating sea area is in the 3m to 4m wave area. In bad sea conditions, the chief scientist Chen Rongyu and captain He Yunkai of the voyage led the inspection team members and paid attention to the safety of people and equipment. They managed to complete one station operation tenaciously and competed for the task of sampling observations in seconds.

As an important task of this voyage, researchers for the first time in the late fall and winter season, launching and retrieving deep-sea submersible buoy systems in the Dalang District of Lusongkou. The observation submersibles that were launched this time integrate 50 ocean observation instruments, 35 glass floats, and 3,000 meters of tethers. This is the sub-standard for multi-observation functions first introduced by the South China Sea Institute of Oceanography. It will work in the Lusongkou area for more than half a year. , to conduct full observations of marine phenomena such as the generation, propagation and evolution of intra-sea waves in the South China Sea. In addition, it has successfully recovered the longest domestic cable profiler observation system in China and obtained fixed-point profiles, long-term sequence temperature, salinity, pressure, velocity, and direction of flow.

The voyage completed a total of 390 hydrological and sedimentary sampling, biological trawls and sampling, and marine chemical sampling, acquired almost 3,000 samples of all types, and conducted full-range navigation observations, surface temperature and salinity observations and automatic weather Observe the station and place 60 temperature profile viewers.