珠江峡谷自中中新统以来继承性北东方向迁移发育，是世界上规模最大的迁移峡谷群，具有独特的沉积和水动力环境。前人基于反射地震资料研究峡谷沉积演化过程，缺少峡谷的现场观测研究。本课题拟使用多套锚系潜标长期实时观测珠江峡谷区底边界层内浊流和底流、内波等各类海流的运动学性质（类型、流速、流向、厚度、流经、沉积物悬浮浓度变化等参数）。通过潜标观测和模拟、三维地震解释和沉积样品测试分析，建立珠江峡谷的沉积模式。分析底边界层内浊流和各类海流对物质输运和沉积过程的影响，研究浊流和海流的相互作用机制，最终探讨侧向沉积体的形成机制，揭示峡谷迁移发育的原因。本课题拟采用的潜标观测和三维反射地震资料相结合的方法为探讨峡谷沉积过程提供了新的研究手段，同时观测结果可以验证前人的地震解释结果。本课题将为研究南海深海物质输运过程、地质灾害分析预测和深水油气勘探提供重要的理论基础和科学依据。

Zhujiang canyons are the largest migrating canyons that are deflecting northwestward from mid-Miocene, indicating a peculiar sedimental and hydrodynamic environment. Previous work mainly focused on the seismic studies of sedimental evolution of Zhujiang canyons, but missed an in-situ observation. As a result, we plan to use deep-sea subsurface moorings to have a long-term and real-time monitoring on features of turbidity flow and ocean current, such as the classification, flow rate, flow direction, current thickness, current coverage and particle concentration. Based on the results from mooring observation, seimic interpretation and sediment sample analysis, we attempt to creat a depositional model of Zhujiang canyons. Our studies will pay attention to three items. (1) Studies on how gravity flow, especially turbidity flow, eroses seabed and transports particles. (2) Influences that ocean current exert on sediment process in the canyon region. (3) Interactions between turbidity flow and ocean current. Eventually, we will disscus the forming mechanism of lateral inclined deposits and try to discover the genesis of the migrating pattern of Zhujiang canyons. A combination of analysis of in-situ moorings and 3D seismic interpretation in this study provides a new method to explore the sedimental process of Zhujiang canyons and alternatively verify the previous conclusions based on seismic interpretations. This study will also help to learn more about sediment transporting, predict natural hazards and explore industrial oil & gas in the northern South China Sea.