Interaction of Holocene coastal evolution and fluvial dynamics in the Rhine-Meuse detal, The Netherlands

荷兰莱茵-默兹河谷全新世海岸演化与河流动力学的相互作用

• 批准号: 13942068
• 负责人: Privatdozent Dr. Goesta Hoffmann
• 金额: --
• 依托单位: Lehr- und Forschungsgebiet für Neotektonik und Georisiken (NUG)
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/13942068?language=en
• 关键词: Interaction; Holocene; coastal; evolution; fluvial

The Rhine-Meuse delta in the Netherlands can be regarded as one of the best investigated deltas in the world concerning questions of delta evolution. Nevertheless the interaction between the coastal area and the fluvial system is still poorly understood. Knowledge of delta-evolution processes is important as deltas and river plains are often densely populated and also sites where natural resources are formed. The object of the investigations proposed here is to find out how the rising sea level influenced the alluvial architecture of the delta during the Holocene. For the Rhine- Meuse delta there is a huge dataset available which will be used to generate geological maps. Using an elevation dataset with unprecedented accuracy allows to generate very precise 3-D models of the investigation area. By sampling and dating of peat-layers the influence of the sea-level rise during the Holocene can be modelled and the palaeogeographic development reconstructed. The results will allow to establish an alluvial architecture model which in turn may predict future development. General factors and processes governing delta evolution will be distinguished; therefore the results will be valid for other deltas as well, including ancient deltas of the geological past.

荷兰莱茵-默兹河三角洲是世界上对三角洲演化问题研究得最好的三角洲之一。然而，人们对沿海地区与河流系统之间的相互作用仍然知之甚少。三角洲演变过程的知识是重要的，因为三角洲和河流平原往往人口稠密，也是自然资源形成的地方。这里提出的调查的目的是找出如何上升的海平面影响的冲积建筑的三角洲在全新世。对于莱茵河-默兹河三角洲，有一个巨大的数据集可用于生成地质图。使用前所未有的精确度的高程数据集可以生成非常精确的调查区域3D模型。通过泥炭层的取样和测年，可以模拟全新世海平面上升的影响，重建古地理发展。结果将允许建立一个冲积结构模型，这反过来又可以预测未来的发展。控制三角洲演化的一般因素和过程将被区分;因此，结果也适用于其他三角洲，包括地质历史上的古代三角洲。