气体水合物在海洋中的分布及其赋存区域的海洋地质特征

Distribution of Gas Hydrates in Ocean and Characters of Marine Geology in Its Distributing Area

气体水合物是一种潜在的新型能源,在资源开发、环境保护和全球气候变化等方面具有重要的意义。通过对DSDP、ODPI、ODP的大量资料和国际其它最新资料的综合分析,揭示了气体水合物在海洋中的分布规律,即主要分布在主动陆缘的增生楔区、被动陆缘的近海区域和泥火山分布区。阐明了气体水合物赋存区域的沉积速率、沉积物的有机碳含量、沉积物的粒度、水动力条件和海洋生产力等海洋地质特征。

Gas hydrates were of considerable interest for their potential as an energy resource. It had important significance in resource exploiting, environment protecting and global dirnate changing. This article analyzed the distributing regulation of gas hydrates in the ocean from mass datum which were gained in DSDP ／ ODP ／ IODP and other fields. Gas hydrates often distributed in the accretionary prism of initiative continental margin, the offing of passive continental margin and the mud volcanoes area. The characters of marine geology, including sedimentary velocity, content of the TOC, granularity of sediment, hydro- dynamic condition and ocean productivity were illustrated.