“雪龙2”号顺利返航，中国第15次北冰洋科学考察取得重要进展

Core Insights - The successful completion of China's 15th Arctic scientific expedition, marked by the return of the "Xuelong 2" vessel, enhances understanding of the rapidly changing Arctic and its global climate impact [1][2] Group 1: Expedition Overview - The expedition involved four vessels: "Xuelong 2," "Jidi," "Shenhai Yihao," and "Tansuo Sanhao," making it the largest Arctic scientific investigation conducted by China [1] - The mission was organized by the Ministry of Natural Resources and aimed to support national key research and development tasks [1] Group 2: Scientific Contributions - The expedition improved synchronous observation capabilities in the Arctic, filling data gaps in high-latitude marine areas and enhancing ocean environment forecasting abilities [2] - Long-term monitoring of ice drift and ecological changes under the ice provides insights into seasonal variations and underlying mechanisms in the Arctic [2] - The deployment of multiple underwater biological imaging systems at different depths and time scales yielded comprehensive data on the ice edge zone [2] Group 3: Deep-Sea Exploration - The "Shenhai Yihao" vessel, supported by "Xuelong 2," successfully conducted China's first manned deep-sea dive in the Arctic ice zone, indicating advancements in deep-sea exploration capabilities [2] - Initial findings reveal significant variations in benthic organism density, biodiversity, and individual size across spatial ranges of tens to hundreds of kilometers, aiding in understanding the spatial distribution of polar deep-sea organisms and assessing climate change impacts on deep-sea ecosystems [2]