火山喷发将地球内部的碳带至地表,而俯冲板块又将地表碳携带至地球深部,这构成了地球深部碳循环。深部碳循环不仅调节大气的组成,维持着地球的宜居性,而且影响着地球内部的组成和动力过程。地球物理观测和地球化学分析表明,俯冲板块可以到达下地幔深度。因此,地表的碳和氢一样,都被认为可以再循环进入下地幔。为了研究洋壳中的碳在俯冲过程 Volcanic eruptions bring the Earth’s interior carbon to the surface, and the subducting plates in turn carry surface carbon to the depths of the Earth, making up the deep carbon cycle of the Earth. The deep carbon cycle not only regulates the composition of the atmosphere, maintains the livability of the earth, but also affects the composition and dynamics of the Earth’s interior. Geophysical observations and geochemical analyzes show that subduction plates can reach the lower mantle depth. Therefore, the surface carbon, like hydrogen, is thought to be recirculated into the lower mantle. In order to study carbon subduction in the oceanic crust