Deep reaching fluid-flow in the Central European Basin System

中欧盆地系统深层流体流动

• 批准号: 5366929
• 负责人: Professor Dr. Asaf Pekdeger (†)
• 金额: --
• 依托单位: Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum (GFZ)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5366929?language=en
• 关键词: Deep; reaching; fluid; flow; Central

Extensive evidence for rising saline waters has been gathered through three centuries and in different regions of the Central European Basin System. These saline springs are temporary and spatially instable (vagabonding). The ultimate causes are not yet clear, however, the chemistry of the waters indicates a deep (Pre-Tertiary) origin. Rising relatively dense salty waters requires forces, either intrinsic to the basins like thermal variations or external (hydraulic head). Because the topography is rather flat, local effects from a varying hydraulic head are not feasible while preliminary model approaches indicate a sufficiently strong interaction with the temperature field in order to induce free convection. The dynamics of the process will be studied in combining hydrology, water chemistry and modelling. The proposal will directly contribute to the theme "recent state and young processes" of the SPP Dynamics of Sedimentary Systems under Varying Stress Conditions by Example of the Central European Basin-System by evaluating the most likely present day flow regime within the basin fill, its interaction with the thermal field as well as fault systems and salt structures. In addition, the proposed work will need and provide feed back with the theme "Fluid- and salt-dynamics" and will also have some connection to the theme "structure and evolution of the crust" as far as the deep thermal field is considered. The final objective is, to understand the fluid dynamics intrinsic to the basin as well as the effects of possible external forces like the impact of the hydraulic head at the southern margin of the basin.

在三个世纪和中欧盆地系统的不同地区，已经收集了盐水上升的广泛证据。这些盐水弹簧是暂时的，在空间上是不稳定的（流浪者）。但是，最终原因尚不清楚，但是水域的化学表明是深层（前三级）的起源。相对密集的盐水上升需要力，要么固有地与热变化或外部（液压头）等固有的力。由于地形相当平坦，因此来自不同液压头的局部效应是不可行的，而初步模型方法表明与温度场的相互作用足够强，以引起自由对流。该过程的动力学将在结合水文，水化学和建模时进行研究。该提案将通过评估盆地填充内最有可能的当今流动状态，与热场的相互作用以及断层系统和盐结构的相互作用，通过中欧压力条件下，在不同的压力条件下，在不同的压力条件下的SPP动力学的“最新状态和年轻过程”直接促进了沉积系统的SPP动力学的主题。此外，拟议的工作将需要并为饲料提供主题“流体和盐动力学”，并在考虑深度热场的情况下，与主题“结构和演变”的主题有一定的联系。最终的目标是了解盆地固有的流体动力学以及可能的外力的影响，例如液压头对盆地南部边缘的影响。