执行本次考察任务的科考船之一——"雪龙2"号7月6日从上海出发，7月21日抵达北冰洋作业海域，正式 展开作业。科考期间，队员们成功布放了4套Lander，最后一套回收安排在9月11日上午进行，它也是本 次科考倒数第二个作业项目。 7月份布放这个Lander时，水面满是海冰。随着海冰融化，回收时已没有冰的踪影。考察队预计，当天9 点开始回收，两个小时即可完成。 9月12日，队员们在艉甲板回收Lander。新华社记者刘诗平 摄 布放和回收生态海底着陆器（Lander），是中国第15次北冰洋科学考察的重头戏。考察队没有想到，在 北极难得的无冰无雾、微风少浪的晴天里，回收本次科考最后一个Lander时一波三折。 从9月11日上午开始回收，到12日凌晨最终完成，Lander从石沉大海到神奇出现，上演了一场跌宕起伏 的"收官之战"。 从乐观到失落 布放和回收Lander，对了解北极冰边缘区生态系统对海冰消退的响应具有重要意义。搭载了多参数水质 仪、海流计和摄像机等设备的Lander，可测量海底的温度、盐度、浊度、叶绿素、溶解氧，以及硝酸盐 与海流等环境参数，在北极海冰消融背景下观测底栖生物群落及其对环境变化的响应。 "难 ...

中国第15次北冰洋科学考察队近日运用冰下双运动模式AUV（简称"双模AUV"），成功开展北冰 洋高纬度海域冰底形态和冰下海洋环境综合观测。 图为王健（左一）等科考队员在北冰洋高纬度海域布放双模 AUV 。新华社记者刘诗平 摄 "双模AUV是具备水下巡游与冰底爬行两种运动模式的水下机器人，本次考察期间共完成12次下 潜，顺利完成多项指标测试验证，同步开展了冰下海洋环境观测，获得了包括电导率、温度、盐度、溶 解氧、叶绿素及冰底视频在内的水文—生态数据。"科考队员、中国科学院沈阳自动化研究所研究员王 健说。 双模AUV是"十四五"期间在国家重点研发计划支持下，围绕北极海冰及冰下海洋环境立体观测需 求研制的水下机器人装备。 王健表示，双模AUV可在海水中以2至3节的速度航行观测，也可贴附在冰底近距离爬行观测，满 足不同学科的多样化观测需求。本次科考期间，双模AUV完成了我国首次在北冰洋100%密集冰区的海 冰冰底形态观测试验，获得了高精度的冰底冰形冰貌数据。 中国第15次北冰洋科学考察队首席科学家林龙山表示，本次考察期间，双模AUV为多项国家科技 项目实施提供了重要装备支撑，表现出优异的冰下观测能力，标志着我国北极水 ...

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 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 successful return of the "Xuelong 2" icebreaker marks a significant advancement in China's deep-sea exploration capabilities, particularly in the Arctic region, highlighting the country's commitment to scientific research in extreme environments [1] Group 1: Arctic Scientific Expedition - The 15th Arctic scientific expedition organized by the Ministry of Natural Resources involved four vessels: "Xuelong 2," "Jidi," "Shenhai 1," and "Tansuo 3," making it the largest Arctic scientific investigation conducted by China [1] - The expedition facilitated the successful deep dive of the "Jiaolong" manned submersible in the Arctic ice zone, representing China's first manned deep-sea dive in this region [1] Group 2: Research Findings - Preliminary research indicates significant variations in benthic organism density, biodiversity, and individual size across spatial ranges of tens to hundreds of kilometers in certain Arctic sea areas [1] - These findings provide strong support for understanding the spatial distribution patterns of polar deep-sea benthic organisms and assessing the impact of climate change on deep-sea ecosystems [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 Insights - The successful completion of China's 15th Arctic scientific expedition by the "Snow Dragon 2" ship marks a significant advancement in understanding the rapid changes in the Arctic and their global climate implications [1][2] Group 1: Expedition Overview - The expedition involved four vessels: "Snow Dragon 2," "Polar," "Deep Sea One," and "Explorer Three," making it the largest Arctic scientific investigation conducted by China [1] - The mission was organized by the Ministry of Natural Resources and aimed to enhance China's research capabilities in the Arctic region [1] Group 2: Scientific Achievements - Collaborative operations between "Snow Dragon 2" and "Polar" in high-latitude marine areas improved synchronous observation capabilities, filling data gaps in the Arctic [2] - Long-term monitoring of ice drift and underwater ecological changes provided insights into seasonal variations and mechanisms in the Arctic [2] - The deployment of multiple underwater biological imaging systems at various depths yielded extensive data on the ice edge zone, enhancing understanding of the "sea-snow" formation mechanisms [2] Group 3: Deep Sea Exploration - The "Deep Sea One" ship, supported by "Snow Dragon 2," successfully conducted China's first manned deep-sea dive in the Arctic, showcasing advancements in deep-sea exploration capabilities [2] - Initial findings indicated significant variations in benthic organism density, diversity, and size across distances of tens to hundreds of kilometers, aiding in understanding the spatial distribution of polar deep-sea ecosystems [2]

Core Insights - The successful completion of China's 15th Arctic scientific expedition by the "Snow Dragon 2" ship marks a significant achievement in understanding the rapidly changing Arctic environment and its implications for global climate change [1][2] Group 1: Expedition Overview - The expedition involved four vessels: "Snow Dragon 2," "Polar," "Deep Sea One," and "Explorer Three," making it China's largest Arctic scientific investigation [1] - The mission was organized by the Ministry of Natural Resources and aimed to implement national key research and development plans [1] Group 2: Scientific Achievements - Collaborative operations between "Snow Dragon 2" and "Polar" enhanced synchronous observation capabilities in high-latitude Arctic regions, filling data gaps and supporting marine environmental forecasting [2] - Long-term monitoring of ice drift and underwater ecological changes provided insights into seasonal variations and underlying mechanisms in the Arctic [2] - The deployment of multiple underwater biological imaging systems at various depths yielded extensive data on the ice edge zone, contributing to the understanding of the "sea-snow" formation mechanism and the ecological responses to sea ice retreat [2] Group 3: Deep-Sea Exploration - The "Deep Sea One" ship, supported by "Snow Dragon 2," successfully conducted China's first manned deep-sea dive in the Arctic ice zone, indicating advancements in deep-sea exploration capabilities [2] - Preliminary studies revealed significant spatial variations in benthic organism density, diversity, and size across Arctic seabed areas, aiding in the assessment of climate change impacts on deep-sea ecosystems [2]