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依据中、澳部分河流的资料,探讨了冰后期海面变动各个阶段对河流-河口体系不同部位的影响及时空变化,划分出4个发育阶段。早期海进主要使下游河段发生沉积,晚期海进导致河口湾的形成,稳定阶段沼泽沉积发育,海退阶段河口湾充填,并逐渐转化为三角洲。在同一个地区,河流-河口体系随时间而变化:海进时,依次由下游河段转变为河口湾,最后可能成为口外海域;海退时,则由口外海域变为河口湾,可能进而成为三角洲。
Based on the data of some rivers in China and Australia, this paper discusses the effects of various stages of the sea surface changes in the later stages of the ice on different parts of the river-estuarine system and the spatial and temporal changes, and divides four stages of development. In the early stage of sea-going, sedimentation mainly occurred in the lower reaches of the river, leading to the formation of estuarine bay in late stage, swamp sediment in stable stage and estuary filling in sea-returning stage, and gradually transformed into delta. In the same area, the river-estuarine system changes with time: when it enters the sea, it turns from the downstream reach into estuary in turn and may finally become the mouth of the sea; when it returns, it will change from the mouth to estuarine and may become delta.