CCTV reporters with the team learned from China's 34th Antarctic expedition that during the 22-25 period, the expedition team carried out geophysical surveys in the Terra Nova Bay of the Ross Sea in Antarctica, and obtained data on the seabed topography, Marine gravity and magnetic force. This is the first time that the "Snow Dragon" ship has obtained the seabed topography and geomorphologic data of the Antarctic ocean in the way of full coverage survey.

Terra Nova Bay is located along the coast of Victoria Land in the western part of the Ross Sea, surrounded by research stations of the United States, New Zealand, Germany, Italy and the Republic of Korea. China's new Ross Sea station is also located here.

The "Snow Dragon" ship carried out a "carpet" voyage in Tlanova Bay, and used the newly installed precision survey equipment of submarine topography in the floating ice area in 2017 to carry out topographic and geomorphologic survey of the sea floor. The survey line is nearly 1,700 kilometers in total, covering an area of more than 3,000 square kilometers. A total of nearly 100 kilometers from the new station to the sea floor precision survey.

Chief scientist Yang Huigen said: "The data obtained this time has basically mapped out the topography and geomorphologic features of the waters near the new station, laying the foundation for the construction of the Marine laboratory of the new station and the construction of the Antarctic ocean seabed observation network, and also enhancing China's stereoscopic observation capability of the Antarctic ocean."

Antarctic research team conducts "Ocean stereoscopic survey"

China's 34th Antarctic research team has been conducting operational observation in the Ross Sea for several days since the 25th, focusing on Marine microplastics, artificial radionuclides, Marine protected areas and other hot issues of international concern.

The expedition team has set up a total of three sections and 19 observation stations in the Ross Sea, and carried out microplastic trawls on the surface of the sea, Marine water body surveys, and seabed topography and geomorphology surveys, forming a "three-dimensional Marine survey network". The samples obtained will be carried out for preliminary analysis in the laboratory of the Xuelong ship.

Since the expedition set off, Marine microplastics have been detected in the Davis Sea and the waters of the Antarctic Peninsula, indicating that pollutants caused by human factors have penetrated into the South Atlantic and the South Indian Ocean, and the Antarctic Marine environment is facing increasingly severe challenges. Strengthening the operational investigation of the Antarctic Marine environment is an important measure taken by China to protect the Antarctic environment. (Zhao Shuguang, CCTV reporter, Wang Yuanwei)