填补我国大洋航次高纬度海域综合调查空白——访中国大洋92航次第一航段领队许学伟

Core Insights - The "Jiaolong" manned submersible successfully conducted China's first manned deep dive in the Arctic ice zone during the 92nd ocean expedition, marking a significant advancement in deep-sea exploration capabilities [1][2] - The expedition demonstrated the effectiveness of domestic upgrades to the "Jiaolong" submersible, enhancing its operational autonomy and safety in extreme polar conditions [2][3] Group 1: Mission Overview - The "Jiaolong" submersible, along with the "Shenhai Yihao," completed over 10 manned deep dives in the Arctic Ocean during the expedition, which lasted from July 15 to September 8 [2] - This mission was supported by national key research and development projects, showcasing China's growing capabilities in deep-sea exploration and technology independence [2][3] Group 2: Technical Enhancements - The "Jiaolong" underwent significant upgrades, including the installation of lithium batteries and advanced imaging systems, which were tested successfully in the Arctic's complex environment [2][3] - Modifications included the addition of multi-beam sonar for detecting ice and a secondary release device to control ascent speed, improving navigation and positioning accuracy [3] Group 3: Collaborative Operations - The mission marked the first instance of underwater collaborative operations between the "Jiaolong" and an ROV (remotely operated vehicle), enhancing sampling capabilities and operational efficiency [3] - The synergy between manned and unmanned systems is expected to improve future underwater operations and expand the scope of deep-sea research [3] Group 4: Scientific Discoveries - The expedition yielded high-quality biological samples, which are crucial for subsequent morphological identification and scientific research [4] - AI analysis of high-definition imagery revealed significant variations in benthic biodiversity and individual sizes across the surveyed Arctic regions, contributing to understanding the impacts of climate change on deep-sea ecosystems [5] - The discovery of potential historical cold spring eruptions and methane migration pathways provides valuable geological insights into the Arctic region [5]