摘要
本文主要根据长江下游近河口段全新世河漫滩相沉积的厚度及其沉积速率的变化,来说明全新世海面变化的大体过程及其对该河段漫滩相沉积发育的影响作用。由海面上升引起的长江下游近河口段的水位上升,是自下向上发展的,水位的上升不仅与海面上升直接有关,而且与由海面上升、下游近河口段水面比降变小所引起的大量泥砂淤积也有十分密切的关系。
The flood land deposits formed in Holocene was around 30-40m in thickness in the lower reach (from Hukou to Zhenjiang) of Changjiang valley, exceeding enormously 'the normal thickness' of the flood land deposits formed generally in other valleys, which was related to the constant rise of the flood stage in that period. The latter was resulted directly of indirectly from sea level rise in Holocene.
出处
《海洋科学》
CAS
CSCD
北大核心
1990年第1期9-13,共5页
Marine Sciences
基金
国家自然科学基金
关键词
海面
变化
长江
下游
沉积作用
Sea-level change, The lower reach of the Changjiang river, Deposition
