逐梦“星辰大海”！新春佳节之际 四支中国科考队开展大洋考察取得新进展

Core Insights - China has made significant achievements in ocean scientific research since the 1970s, with ongoing exploration efforts by four research teams during the Spring Festival [1] Group 1: Research Progress - The "Jiaolong" manned submersible is currently conducting a scientific expedition in the western Pacific, focusing on ecological surveys of hydrothermal areas and investigations in marine geology, chemistry, biology, and physics [1] - The "Jiaolong" submersible completed its 419th dive, marking the 8th dive of the current expedition, exceeding a depth of 4000 meters, and indicating the operational phase of the "one ship, dual submersible" model [3] - The China Ocean 91 expedition is conducting resource and environmental surveys in the polymetallic nodule contract area, providing data on resource distribution and winter environmental parameters for future mining equipment impact assessments [5] - The China Ocean 94 expedition in the northwest Indian Ocean is investigating the impacts of human activities and climate change on marine environments, focusing on mechanisms driving hypoxia and biodiversity evolution [7] - The China Ocean 95 expedition is heading to the southwestern Indian Ocean for polymetallic sulfide resource exploration and environmental baseline surveys, which will provide crucial data for resource evaluation and environmental assessments [9]