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湛江港是华南海岸规模最大的中潮溺谷湾型潮汐汊道港湾，口外发育规模巨大、形态典型的落潮三角洲。依据现场调查资料分析，落潮三角洲具有马蹄形浅滩包围中央深槽的地貌结构，由中心至周边为粗砂至极细砂同心半圆带状分布的表层沉积物分布，中央深槽落潮流动力为主，周边浅滩波浪动力和涨潮流动力为主的动力场结构。本文讨论了落潮三角洲沉积动力过程，包括落潮三角洲形成发育的动力条件与泥沙供应条件、落潮三角洲地貌结构、表层沉积物分布和动力场结构之间的一致性，以及落潮三角洲沉积物运移路径。
Zhanjiang Port is the largest mid-tide drowning valley-type tidal harbor road on the coast of South China. It has a large scale and typical ebb tide delta. According to the field survey data, the ebb tidal delta has the geomorphic structure surrounded by the shallow deep horseshoe shoal in the central deep trough. From the center to the periphery, the surface sediment distribution is concentric and semicircular banded distribution from coarse sand to very fine sand. The tidal flow momentum in the central deep trough is dominant. Forced wave power and tidal flow momentum-based dynamic field structure. This paper discusses the sedimentation dynamics of the ebb-delta, including the dynamic and sediment supply conditions for the ebb and flow of the ebb Delta, the consistency between the ebb and delta topography, the distribution of surface sediments and the dynamic field structure, .