The fifth Arctic scientific expedition of China se

China's fifth Arctic scientific expedition set sail in July

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it is understood that Yang Huigen, director of China Polar Research Center, is the leader of the scientific research team, and Ma Deyi, director of the first Institute of Oceanography of the State Oceanic Administration, is the chief scientist. The investigation team was composed of scientific researchers, organization, coordination and management personnel, logistics support personnel, media and the crew of the "Snow Dragon". At the same time, four scientists from France, Denmark and Iceland were invited to participate, a total of 120 people

the investigation will focus on climate and environmental change research. The main contents will include the investigation of the key elements of the change process of the marine environment and the sea ice air system; Geological records of rapid changes in the Arctic marine environment and their impact on China's climate; Investigation of key elements of geophysical field and analysis of structural characteristics in the Arctic region; Real time visualization of the test curve under the rapid melting of sea ice the biogeochemical cycle of carbon flux and nutrient elements in the northwest ice ocean; The current situation of ecosystem functions in the Arctic sea area and its response to global change, etc

a total of 73 fixed-point stations and 2 long-term observation stations are set for the investigation. During the whole voyage, the total investigation time was 512 hours, including 339 hours of inter station crossing time and 173 hours of ship stopping operation time

it is reported that the scientific research team has an important task, that is, to visit Iceland at the invitation of the Icelandic government. This voyage may also be the first time for Chinese ships to pass through the Northeast passage of the Arctic. The current situation provides us with a new way to solve the waste problem. The investigation team plans to leave Qingdao on July 2 and arrive in Iceland via the Bering Sea, Chukchi Sea and northern sea route. It will carry out a five-day visit and investigation in Iceland, and then return from the high latitude area of the Arctic Ocean via the high seas of Norway and Denmark. The widely used electronic extensometers are divided into conventional contact extensometers and high fidelity non-contact video optical extensometers, ordinary metal plates, bars Contact extensometer can be used for pipes, etc. video optical extensometer can be used for optical fiber cables, metal foils, fiber filaments, etc. which are difficult to measure by conventional extensometer. It has the advantages of no knife edge damage, no sliding error, no fracture damage, etc. it returns to Chukchi Sea and returns through Bering sea. The total voyage is expected to be more than 17000 nautical miles, a total of 90 days, and it is expected to return to Shanghai port on September 29