西南石油大学学报（自然科学版）2025，Vol.47Issue(1)：27-41,15.DOI:10.11885/j.issn.1674-5086.2024.08.31.02
深海水道迁移模式及成因机制
Migration Patterns and Genetic Mechanisms of Deep-sea Channels
摘要
Abstract
The deep-sea channel is one of the important conduits for the transport of terrestrial clastic sediments to deep-water basins,and it is also the main depositional site for sand sedimentation in deep-water basins.This study summarizes previous research to clarify the migration and formation mechanisms of deep-sea channels,yielding the following findings:based on the migration mode,deep-sea channels can be categorized into unidirectional migration channels(upstream migra-tion type/downstream migration type)and multidirectional migration channels(downstream migration type/lateral migration type/obstacle migration type).The migration characteristics of the channels can be characterized based on the changes in the channel thalweg,unidirectional migration channels are accompanied by overall changes in the thalweg line,while multidi-rectional migration channels primarily exhibit local changes.The interaction between bottom currents and gravity currents controls the sedimentary construction of unidirectional migration channels.In addition,self-circulation and upwelling currents also affect the sedimentary evolution of the channels.Multidirectional migration channels,on the other hand,are controlled by multiple factors such as sea level changes,sediment supply,tectonic movements,paleo-topography,and the sedimentary action of the channels themselves.The formation of unidirectional migration channels is mainly controlled by the interaction between gravity flows and contour currents,the self-circulation of flows,and upwelling flows,while multidirectional migration channels are mainly influenced by sea-level changes,sediment supply,tectonic movements,paleotopography,and the self-deposition of channels.The future research and development directions of deep-sea channel migration patterns mainly include three aspects:1)actively conducting multi-scale quantitative research;2)exploring the coupling mechanisms of various dynamic factors re-lated to channel migration;3)strengthening the research on the relationship between channel migration patterns and reservoir development.关键词
深海水道/迁移方式/深泓线变化/成因机制/迁移模式Key words
deep-sea channel/migration mode/Thalweg line changes/genetic mechanism/migration pattern分类
能源科技引用本文复制引用
梁诗琴,吴伟,向威,赵中会,随雅萍..深海水道迁移模式及成因机制[J].西南石油大学学报（自然科学版）,2025,47(1):27-41,15.基金项目
国家自然科学基金(42077410,42372170) （42077410,42372170）
