Progress of intermediate-depth and deep ice-core drilling projects in polar regions and its enlightenment for China
It is of great significance to carry out intermediate-depth and deep ice-core drilling projects in polar regions for obtaining paleoclimate information and predicting future ice sheet evolution.Since the 1960s,countries around the world have completed 26 intermediate-depth ice-core drilling projects and 14 deep ice-core drilling projects in polar regions.At present,there are still five deep ice core drilling projects in progress,which are Dome A,Beyond EPICA,MYIC,Dome Fuji and Hercules Dome.Russia is also planning a deep ice core drilling project at Dome B.At present,China has only implemented one intermediate-depth ice-core drilling project,and the depth of the deep ice-core drilling project has just broken through 800m.Compared with Europe,the United States,Japan,Russia,China has less drilling experience,low degree of equipment independence,and relatively backward technical level in the field of intermediate-depth and deep ice-core drilling technology.Therefore,China should actively develop deep ice-core electromechanical drill with independent intellectual property rights,accelerate the implementation of Dome A deep ice-core drilling project,carry out intermediate-depth ice-core drilling and ancient blue ice drilling projects,break through key technologies such as rapid ice drilling and directional ice-core drilling technology,so as to promote the development of China's polar ice-core drilling technology and improve its influence in the field of polar ice core science.