湖平面变化控制了湖盆沉积层序的形成、岩相类型展布与叠加关系，是湖盆沉积动力学研究的热点问题。本项目研究拟以渤海湾盆地辽东湾坳陷东营组为研究对象，建立高精度年代地层格架，利用地震滨岸上超解释、常微元素测定分析及孢粉古生物分析等方法实现不同尺度湖平面变化的定量反演；同时，结合湖盆边界断裂的走滑活动、盆内主要断裂的生长指数与湖盆基底差异构造沉降分析构造活动的旋回特征，利用孢粉类型统计、常微量元素气候指标和稳定氧同位素分析东营组气候演化特点，建立湖平面变化、古气候演化和构造活动旋回特征等盆地动力间的耦合关系模型；最后，探讨盆地沉积动力因素对湖底扇的形成以及富砂富泥特征的控制作用。项目揭示走滑-断陷背景湖盆沉积动力的耦合关系，从沉积动力学领域丰富陆相沉积理论体系，同时厘定湖平面变化等因素对湖底扇富砂富泥的影响，为储层勘探提供理论基础。

The lake level change controls the formation of the lacustrine basin sedimentary sequence, the lithofacies distribution and its overlyjing relation, which is a hot issue in the sediment dynamics study of the lacustrine basin. Taking Dongying formation of Liaodong Bay depression in Bohai Bay basin as the research object, the high-precision chronostratigraphic framework was built. Quantitative inversion of lake level changes in macroscale and micro-scale was also realized by using seismic interpretation, trace elements, major elements analysis and sporopollen analysis. Besides, combining with the strike-slip activity of boundary faults, growth index of the main faults in the basin and cycle characteristics of the tectonic activities caused by differential tectonic subsidence of basin basement, the coupling model among the lake level change, paleoclimate evolution and tectonic cycle was established and the control effects of dynamic factors in the basin on the formation of the sublacustrine fan which is rich in sand or mud were also discussed based on the method of sporopollen statistics, climate index and oxygen isotope. This study has a great theoretical significance on the continental sedimentary theory and reservoir exploration, it not only reveals the coupling relationship among each sedimentary dynamics in strike-fault basin, but also determines the effects of lake level changes on the sublacustrine fan.