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首页> 外文期刊>Journal of marine systems: journal of the European Association of Marine Sciences and Techniques >Holocene morphogenesis at the southern Baltic Sea: Simulation of multi-scale processes and their interactions for the Darss-Zingst peninsula
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Holocene morphogenesis at the southern Baltic Sea: Simulation of multi-scale processes and their interactions for the Darss-Zingst peninsula

机译：波罗的海南部的全新世形态发生：Darss-Zingst半岛多尺度过程及其相互作用的模拟

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摘要

A modeling methodology based on a multi-scale hybrid morphodynamic model and representative climatic driving conditions is presented to study the long-term morphological evolution of wave-dominated coasts on a centennial-to-millennial scale. The Darss-Zingst peninsula at the southern Baltic Sea, which developed during the last 6000 years by a combined effect of eustatic sea level change, isostatic movement, meteorological drivers and nearshore sediment dynamics, is selected for a case study. A paleo-Digital Elevation Model (DEM) serving as initial condition is reconstructed by a compilation of recent digital elevation data sets, an eustatic sea-level curve, an isostatic map and dated sediment cores. Representative wind series are generated based on a statistical analysis of paleo-wind data from a simulation with the coupled atmosphere-ocean general circulation model ECHO-G over the last 7000 cal yr. These wind data were calibrated by proxies from lithostratigraphic studies of sediment cores from the central Baltic Sea, and used as climate driving conditions for the morphodynamic model. Based on the reconstructed paleo-DEM and the representative climatic driving conditions, the methodology is applied to reconstruct the Holocene morphogenesis of the Darss-Zingst peninsula since 6000 cal yr BP. Simulation results indicate that the development of the barrier system is a combination of long-term effects of climate change, isostatic crustal movement, wave dynamics and eolian transport with short-term effects of extreme wind events, i.e. storms.
机译：提出了一种基于多尺度混合形态动力学模型和代表性气候驱动条件的建模方法，以研究百年到千年尺度波浪主导海岸的长期形态演化。案例研究选择了波罗的海南部的Darss-Zingst半岛，该半岛是在近6000年内因海平面不断变化，等静运动，气象驱动因素和近岸沉积物动力学共同作用而形成的。通过汇编最新的数字高程数据集，一条欣喜的海平面曲线，一条等静线图和已过时的沉积岩心，重建了作为初始条件的古数字高程模型（DEM）。代表风序列是根据古风数据的统计分析生成的，该数据来自最近7000年来耦合大气-海洋总循环模型ECHO-G的模拟。这些风速数据由波罗的海中部沉积岩心的岩石地层学研究的代理人校准，并用作形态动力学模型的气候驱动条件。基于重建的古DEM和典型的气候驱动条件，该方法被用于重建自6000 cal BP以来的Darss-Zingst半岛全新世形态。仿真结果表明，屏障系统的发展是气候变化，等静地壳运动，波浪动力学和风成因的长期影响与极端风事件（即风暴）的短期影响的结合。

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