在国家重点研发计划项目支持下，"蛟龙"号开展升级改造。本航次是"蛟龙"号完成国产化升级改造、继南海海试之后正式进入极区作业，创新 实现冰区双船（"雪龙2"号和"深海一号"）协同作业，实现了我国首次北极冰区载人深潜、首次有人/无人潜水器极区水下协同作业，显示我国 深海进入和深海探测能力持续增强，充分体现深海科技自立自强。 "蛟龙"号在极区高纬度冰区，验证了锂电池、视像系统、捷联惯导等国产化设备在极区复杂环境中的下潜作业能力，提升了潜水器在极区作业 的自主性和安全性，为我国开展极地环境调查与前沿科学研究提供了坚实的技术支撑。 复杂环境下开展精细综合调查 记者："蛟龙"号继在太平洋、印度洋和大西洋深潜之后首次在北冰洋下潜。北冰洋纬度高、气候寒冷和多冰，下潜有哪些特殊之处？ 许学伟：在北极，"蛟龙"号面临风、浪、流、冰、雾、寒等诸多复杂作业环境，很多时候是多重环境因素叠加，尤其是在海冰密集度高的冰区 作业，要选择合适的下潜作业点，综合考虑浮冰漂浮情况，定点上浮至水面，这些都与非极地海区深潜不同。 "蛟龙"号针对极地特殊环境开展了极区适应性改造，比如加装了多波束以探测极地海面浮冰，加装了二次抛载装置以控制潜水器上浮速度 ...

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]