我国成为目前世界上唯一在北极密集海冰区连续载人深潜的国家

Core Insights - The successful return of the Arctic manned deep-sea exploration team marks a significant achievement in China's deep-sea research capabilities, utilizing the domestically designed and built ice-breaking mother ship "Exploration No. 3" and the manned submersible "Fighter" [1][2] Group 1: Mission Overview - The Arctic manned deep-sea exploration team completed 43 dive missions with the "Fighter" submersible, collaborating underwater with the "Jiaolong" submersible, innovating a dual submersible operational model [1] - The mission lasted 98 days, covering over 15,000 nautical miles, with 56 days of operations in the Arctic Ocean and 1,989 nautical miles of navigation in ice-covered areas [1] Group 2: Technical Achievements - The "Fighter" submersible achieved an average underwater time of over 9 hours and an average seabed operation time of over 6 hours during 32 dives in 29 days, reaching a maximum depth of 5,277 meters [2] - The mission validated the operational capabilities and application value of the "Fighter" submersible and "Exploration No. 3" in polar ice regions, establishing a new mobile ice diving model [2] Group 3: Scientific Contributions - The exploration team collected valuable water, sediment, rock, and biological samples, providing significant observational data to support research on rapid climate change in the Arctic and geological processes in the context of ultra-slow expansion of the Gakkel Ridge [3]