摘要

Magnetic signature monitoring of paleoclimate and sediment provenance has been more and more widely used in ODP studies and the achievements of these studies have aroused extensive concerns. In addition, magnetic monitoring of seafloor hydrothermal activity and gas hydrate has obtained some important achievements: (1) alteration degree of magnetic minerals is correlated with hydrothermal circulation of fluids; (2) formation of magnetic iron sulfides appears to correlate with the generation of gas hydrate, which provides a way by using magnetic methods to monitor gas hydrate distribution. But they are still in infancy and the detailed mechanism remains a topic for further research.