Core Insights - The article highlights China's successful completion of its 15th Arctic scientific expedition, marking the largest scale of such an endeavor to date [1][19] - A significant achievement during this expedition was the first manned deep-sea dive in the Arctic ice zone using the "Jiaolong" submersible, indicating a new phase in China's deep-sea exploration capabilities [3][5][7] Group 1: Expedition Overview - The expedition involved four vessels: "Snow Dragon 2," "Polar," "Deep Sea One," and "Exploration Three," showcasing China's commitment to Arctic research [1][19] - The expedition reached a record latitude of 77.5° North, filling a gap in high-latitude oceanic research for China [21] Group 2: Technological Innovations - The "Jiaolong" submersible's successful dive represents a breakthrough in China's deep-sea exploration, transitioning from "full ocean depth" to "full ocean area" operations [7] - The expedition featured the world's first underwater collaborative operation between manned and unmanned submersibles in the Arctic region, enhancing operational capabilities [8][10] Group 3: Scientific Discoveries - The expedition collected a diverse range of biological samples, including 183 specimens across 12 categories, contributing valuable data to marine biology [21] - AI technology was utilized for real-time biological identification during the expedition, combined with environmental DNA analysis to enhance accuracy [14][16] - The study revealed significant variations in benthic organism density and biodiversity across different spatial scales in the Arctic [18] Group 4: Environmental Insights - The expedition improved understanding of the formation mechanisms of "marine snow," a phenomenon observed in deep-sea environments, which is crucial for studying the Arctic ecosystem's response to climate change [23]

央视网消息：前不久，由自然资源部组织的中国第15次北冰洋科学考察任务圆满完成。此次考察由"雪龙2"号、"极地"号、"深海一号"和"探索 三号"四船共同实施，是我国迄今为止规模最大的北冰洋科学考察。考察期间，我国首次在地球最北端的冰封极地海域，成功完成载人深潜调 查的"破冰之旅"。 在"雪龙2"号船的保障支持下，"深海一号"船搭载"蛟龙"号成功实现了我国首次载人深潜北极冰区下潜，标志着我国载人深潜与极地考察事业 正式迈入"全海域作业"的新阶段。 国家深海基地管理中心潜航员齐海滨介绍，在北极要面临风、浪、流、冰、雾、寒等诸多复杂作业环境，尤其是在大面积冰面区域的作业，要 选择合适的下潜点，综合考虑浮冰的漂浮情况，这些都和其他海区深潜不同。 2025年7月，我国首个极区载人深潜航次正式启航。8月上旬，"雪龙2"号与"深海一号"船在北冰洋相遇会合。随后，"深海一号"顺利驶入作业 工区，"蛟龙"号开启北极首潜。 "蛟龙"号主驾驶潜航员傅文韬介绍，他们在别的地方下潜，舱内比外面要冷很多。但是北极不一样，他们进来的时候穿多少到底下也是穿多 少。会做同样多的准备工作，把每个潜次的任务完成好。 国家深海基地管理中心副主任许学伟 ...

前不久，由自然资源部组织的中国第15次北冰洋科学考察任务圆满完成。此次考察由"雪龙2"号、"极地"号、"深海一号"和"探索三号"四船共 同实施，是我国迄今为止规模最大的北冰洋科学考察。 考察期间，我国首次在地球最北端的冰封极地海域，成功完成载人深潜调查的"破冰之旅"。今天我们就来探秘深海，为您揭秘这次科考的独家 细节。先来看看如何在北极实现载人深潜。 在"雪龙2"号船的保障支持下，"深海一号"船搭载"蛟龙"号成功实现了我国首次载人深潜北极冰区下潜，标志着我国载人深潜与极地考察事业 正式迈入"全海域作业"的新阶段。 今年7月，我国首个极区载人深潜航次正式启航。8月上旬，"雪龙2"号与"深海一号"船在北冰洋相遇会合，随后，"深海一号"顺利驶入作业工 区，"蛟龙"号开启北极首潜。 首潜成功只是开始，在这个航次，更多"全球首次"在极区海域接连诞生，水声通信、精准定位等技术难题被一一攻克。 极区深潜装备改造 为"蛟龙"穿"冰甲" 在北极，零下严寒、浮冰密布、地磁异常，每一项都是对深潜装备的"极限考验"。 为了让"蛟龙"号和"深海一号"能安全作业，科研团队提前"量身定制"多项改造，让中国深潜装备拥有了应对极区环境的"专属 ...

Core Insights - The successful completion of China's 15th Arctic scientific expedition marks a significant achievement in enhancing the country's understanding of the rapidly changing Arctic environment and its implications for global climate change [1][3][5] Group 1: Expedition Overview - The expedition involved the "Snow Dragon 2," "Polar," "Deep Sea One," and "Explorer Three" vessels, making it China's largest Arctic scientific investigation to date [5] - The "Deep Sea One" vessel successfully conducted China's first manned deep dive in the Arctic ice zone using the "Jiaolong" manned submersible [5] Group 2: Scientific Contributions - The expedition achieved important progress in multi-disciplinary investigations and collaborative observations in the Arctic, enhancing the capability for synchronous monitoring of the Arctic Ocean [3] - The research revealed significant variations in benthic organism density, biodiversity, and individual size across spatial ranges of tens to hundreds of kilometers, providing insights into the spatial distribution patterns of polar deep-sea organisms and the impact of climate change on deep-sea ecosystems [5]

Core Insights - The article discusses the significant changes observed in the Arctic Ocean, particularly the accelerated melting of sea ice and the expansion of the "ice edge zone" during China's 15th Arctic scientific expedition [1][2]. Group 1: Changes in the Arctic Ocean - The Arctic Ocean is experiencing rapid sea ice melting, with more water ponds observed compared to 15 years ago, indicating faster and more extensive ice loss [1][2]. - The "ice edge zone," defined as areas with 15% to 80% sea ice coverage, has expanded both northward and in high-latitude regions, reflecting rapid changes in the Arctic ecosystem [1][2]. Group 2: Scientific Significance of the Expedition - The expedition, conducted by multiple vessels, marks China's largest Arctic scientific investigation, showcasing the country's enhanced polar research capabilities [2][3]. - The data collected during the expedition provides critical insights into the Arctic ecosystem's response mechanisms to climate change, contributing to a deeper understanding of global warming's impacts [2][3]. Group 3: Technological Innovations and Methodologies - The expedition utilized advanced unmanned survey equipment for comprehensive "air-ice-ocean" observations, significantly improving data collection efficiency [3][4]. - Innovative methodologies included deploying multiple ecological landers and various sampling techniques to gather extensive data on the "ice edge zone," supporting future research on Arctic ecosystem evolution [3][4]. Group 4: Broader Implications - The findings from the expedition are crucial for understanding the implications of Arctic environmental changes on climate security, navigation safety, and sustainable development for China [4][5]. - The expedition's success in utilizing new technologies and collaborative efforts signifies a shift in China's Arctic research from a following role to a more competitive position in the field [4][5].

Core Insights - The successful completion of China's 15th Arctic scientific expedition, marked by the return of the "Xuelong 2" icebreaker to Shanghai, highlights advancements in deep-sea exploration capabilities [1] - The expedition involved significant multi-disciplinary investigations in the Chukchi Sea, Canadian Basin, and central Arctic Ocean, achieving important progress in ocean environment assessments and collaborative observations [1] - Initial research findings indicate significant variations in benthic organism density, biodiversity, and individual size across distances of tens to hundreds of kilometers, providing valuable insights into the spatial distribution of Arctic deep-sea ecosystems and the impact of climate change [2] Group 1 - The "Xuelong 2" and "Jidi" vessels conducted comprehensive marine environment assessments and supported manned submersible operations during the expedition [1] - The "Shenhai 1" vessel successfully performed China's first manned deep dive in the Arctic ice zone using the "Jiaolong" submersible [1] - The expedition is noted as the largest Arctic scientific investigation organized by the Ministry of Natural Resources of China, involving four vessels [1] Group 2 - The leader of the expedition, Zhang Beichen, emphasized the continuous enhancement of China's deep-sea entry and exploration capabilities [1] - The research supports understanding the spatial distribution patterns of deep-sea benthic organisms and assessing the effects of climate change on deep-sea ecosystems [2]

Core Viewpoint - The article highlights the successful return of the "Xuelong 2" icebreaker from the 15th Arctic scientific expedition, marking China's largest Arctic scientific investigation to date [1] Group 1 - The "Xuelong 2" icebreaker, carrying 100 members of the 15th Arctic scientific expedition team, returned to Shanghai on September 26 [1] - The expedition was organized by the Ministry of Natural Resources and involved four vessels: "Xuelong 2," "Jidi," "Deep Sea One," and "Exploration Three" [1] - This Arctic investigation was part of the national key research and development plan, enhancing China's understanding of the rapidly changing Arctic and its impacts [1] Group 2 - The findings from this expedition provide significant support for understanding and effectively responding to global climate change [1]

Core Insights - China's 15th Arctic scientific expedition, conducted by the "Snow Dragon 2" ship, has successfully completed its mission, marking the largest Arctic scientific investigation to date [1][3]. Group 1: Expedition Overview - The expedition involved four vessels: "Snow Dragon 2," "Polar," "Deep Sea One," and "Explorer Three," and was organized by the Ministry of Natural Resources [1][3]. - The "Snow Dragon 2" and "Polar" ships conducted comprehensive marine environmental assessments and manned submersible support in the Chukchi Sea, Canadian Basin, and central Arctic regions [3][4]. Group 2: Scientific Achievements - Significant advancements were made in multi-disciplinary investigations and atmospheric-ice-ocean collaborative observations, enhancing synchronous observation capabilities in high-latitude Arctic regions [3]. - The expedition established real-time monitoring of ice drift and underwater hydrological and ecological changes, contributing to the understanding of seasonal variations and underlying mechanisms in the Arctic [3]. Group 3: Ecological Research - The expedition deployed multiple seabed biological imaging observation systems at various depths and time scales, obtaining extensive data on the ice edge zone [3]. - Observations captured significant peaks in subsurface chlorophyll, aiding in the understanding of the formation mechanisms of "sea snow" in the Arctic and laying the groundwork for studying the ecological responses of the ice edge zone to sea ice retreat [3]. Group 4: Deep-Sea Exploration - Under the support of the "Snow Dragon 2," the "Deep Sea One" successfully conducted China's first manned deep-sea dive in the Arctic ice zone, indicating a continuous enhancement of China's deep-sea exploration capabilities [4]. - Initial research revealed significant variations in benthic organism density, biodiversity, and individual size across distances of tens to hundreds of kilometers, providing valuable insights into the spatial distribution of polar deep-sea organisms and the impact of climate change on deep-sea ecosystems [4].

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]

Core Viewpoint - The successful return of the "Xuelong 2" ship marks the completion of China's 15th Arctic scientific expedition, highlighting the country's advancements in deep-sea exploration and research capabilities [1] Group 1 - The expedition involved four ships: "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 included tasks related to the national key research and development program [1] - The "Shenhai Yihao" ship, supported by "Xuelong 2," successfully carried the "Jiaolong" submersible for its first manned deep dive in the Arctic ice region, indicating enhanced capabilities in deep-sea entry and exploration [1]