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根据舟山群岛峡道地区的钻孔资料，在有孔虫、花粉和沉积特性分析结果的基础上，分析了晚更新世海面变化，探讨了晚更新世末期峡道内的地面高程，进而根据海图量算结果，讨论了舟山群岛峡道底部的泥沙冲淤及其对浙闽沿海泥沙供给的影响。本文认为，晚更新世以来舟山群岛地区发生了三次海进海退，其中晚更新世末期低海面时，舟山群岛峡道高程约位于吴淞基面以下３８ｍ左右，全新世海侵以来，受峡道水动力的作用，除部分峡道内海湾发生淤积外，舟山群岛峡道底部发生了明显的冲刷，其最大冲刷厚度可达８０ｍ左右，为杭州湾乃至整个浙闽沿海提供了大量的泥沙
Based on the data of borehole in the gorge area of Zhoushan Archipelago, based on the analysis results of foraminiferal, pollen and sedimentary characteristics, the sea surface changes of Late Pleistocene were analyzed, and the ground elevation in the gorge of Late Pleistocene was discussed. According to the chart The result of the calculation shows that the sediment deposition at the bottom of the isthmus in Zhoushan Archipelago and its influence on the sediment supply in the coastal areas of Zhejiang and Fujian are discussed. This paper argues that since the Late Pleistocene, three sea-going derails occurred in the Zhoushan Archipelago region. At the late Pleistocene low-lying sea level, the height of Zhoushan Archipelago was about 38 meters below the Wusong basement. Since the Holocene transgression, Hydrodynamic effects, in addition to part of the gorge in the Gulf silt, the bottom of the Archipelago Zhoushan Islands occurred obvious erosion, the maximum erosion thickness of up to about 80m, Hangzhou Bay and the entire Zhejiang and Fujian coast provides a lot of sediment