On September 26th, after a 69-day scientific expedition, the Xue Long successfully returned to the Shanghai Polar Center. HEU College of Underwater Acoustic Engineering teacher HAN Xiao participated in the Arctic scientific expedition. This is the first time that HEU sent teachers to participate in the Arctic expedition who successfully completed the acoustic test under polar ice, and carried out research in the field of noise under polar ice, sound propagation characteristics, underwater acoustic communication. The realized goal was to unveil the mystery of Arctic acoustics.
The expedition was a comprehensive expedition investigation of the Arctic marine environment. It was carried out in accordance with the National Arctic Expedition Plan, in the spirit of General Secretary XI Jinping's speech regarding the creation of the Polar Silk Road , and according to the outline of the 13th Five-Year Plan for National Economic and Social Development. The expedition achieved fruitful results and laid a solid foundation for promoting the development of China's polar undertakings, conducive to maintaining and promoting peace, stability and a sustainable development in the Arctic. It was a successful practice of the relevant statement in China's Arctic Policy whitepaper.
HEU’s Teacher HAN’s research team independently developed more than 90% of the key instruments used in the Arctic acoustic test, such as: autonomous transmitters, self-contained receivers, reverberation test systems, and underwater acoustic communication machines, to name a few. These devices have shown excellent performance in the Arctic low temperature environment and are the basis for the success of this Arctic acoustic environment observation mission.
HEU teacher HAN's research team was jointly led by the Third Ocean Research Institute of the Ministry of Natural Resources, the Institute of Acoustics of the Chinese Academy of Sciences, the Polar Research Institute of China, and Ocean University of China. In recent years, the team has gained the support of the National Key Research and Development Plan, the State Key Program of National Natural Science Foundation, National Defense Basic Scientific Research and many other research projects. The team has also made some achievements in the basic theory of polar acoustics, communication in the polar sea ice area, ice thickness measurement, etc., and has made a useful contribution to fill the research gap of polar acoustics in China.
The 9th Arctic Scientific Expedition team set up three investigation teams, and HEU teacher HAN was assigned to the Oceanic One team of the physical ocean group. Valuable sound velocity profile data was obtained through CTD water harvesting operations, and these data have an important role in supporting the study of underwater acoustic propagation.
China's 9th Arctic Scientific Expedition consists of the Xue Long, the integrated team, the Ocean team, etc., a total of 131 people. The Xue Long sailed about 12,500 nautical miles, the ice area navigation 3815 nautical miles, and the northernmost reached 84º 48'N. The operation area mainly included the Bering Sea, Chukchi Sea, Chukchi Sea Platform/Canada Basin, and the Arctic Ocean Center.
The expedition carried out surveys on the basic environment of the ocean, sea ice, seabed topography, ecology and fisheries, which greatly expanded the content of China's Arctic Oceanographic Survey and further consolidated the foundation of Arctic operational monitoring. It has made positive contributions to China's Arctic scientific research, operational monitoring system construction, Arctic environmental assessment and resource utilization.
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