New discovery of seafloor hydrothermal activity on the Indian Ocean Carlsberg Ridge and Southern North Atlantic Ridge-- progress during the 26th Chinese COMRA cruise

• Published in: Acta oceanologica Sinica 2013-08, Vol.32 (8), p.85-88
• Main Authors: Tao, Chunhui, Wu, Guanghai, Deng, Xianming, Qiu, Zhongyan, Han, Chenhua, Long, Yanmei
• Format: Article
• Language: English
• Subjects: Abnormalities; Climatology; Cruises; Earth and Environmental Science; Earth Sciences; Ecology; Engineering Fluid Dynamics; Environmental Chemistry; Hydrothermal activity; Leg; Malformations; Marine; Marine & Freshwater Sciences; Mineral resources; Ocean floor; Oceanography; R&D; Research & development; Sulphides; 中国; 北印度洋; 协会; 多金属硫化物矿床; 大洋矿产资源; 大西洋中脊; 海底热液活动; 邮轮
• ISSN: 0253-505X; 1869-1099
• DOI: 10.1007/s13131-013-0345-x

The 26th Chinese COMRA （China Ocean Mineral Resources Research ＆ Development Association） cruise was an important cruise. The Carlsberg Ridge （CR） of the Northwest Indian Ocean and the North Atlantic Ridge （NAR）, in which less investigation has been carried out for hydrothermal activities, were investigated and studied during the first two legs of the 26th COMRA cruise. During the first leg, we found one hydrother- mal activity field located in the CR at 3.5~-3.8~ N on the Northwest Indian Ocean Ridge （NWIR）, and sampled seafloor polymetallic sulfide deposits where only abnormalities were found before. During the second leg, we found a new hydrothermal anomaly field located in the NAR at 4~-7~N. The discovery of two hydrother- real and anomaly fields filled in the gap of hydrothermal investigation and study in the corresponding re- ~ions for China.