Spatio-temporal dynamics of water storage, mixing and release

水储存、混合和释放的时空动力学

• 批准号: 200779896
• 负责人: Dr. Theresa Blume
• 金额: --
• 依托单位: Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum (GFZ)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/200779896?language=en
• 关键词: Spatio; temporal; dynamics; water; storage

The baffling diversity of streamflow generation still largely jeopardizes our efforts to anticipate how water quality and supply will be impacted under a potential future climate change. Recent work has suggested that a better understanding of how catchments collect, store and release water is the way forward in this respect. Here, we propose to leverage the research into hydrological processes carried out in the framework of the 1st phase of the CAOS project (Project H) focusing on the 46 cluster sites and the nested catchment experiments for improving our understanding of what are the dominant controls on the spatial and temporal variability of catchment functioning. Relying on a multi-tracer (geochemicals, stable isotopes of O and H, tritium) and multi-sensor (e.g. in situ and satellite-borne monitoring of soil moisture) approach, we intend to contribute answering fundamental research questions on spatio-temporal variance of storage and water apportionment. More specifically, we intend to investigate through our nested catchment set-up located in the geologically contrasted Attert River basin (Luxembourg):- the spatio-temporal dynamics of catchment storage and its compartments (i.e. saturated and unsaturated zones);- the links between catchment characteristics, storage dynamics, temporal dynamics of transit times and end-member contributions;- regionalisation of our newly gained understanding of hydrological processes by combining hydrological mapping of dominant processes with process-based hydrological modelling.

令人困惑的径流产生的多样性仍然在很大程度上危及我们的努力，预测水质和供应将如何受到影响，在未来潜在的气候变化。最近的工作表明，更好地了解集水区如何收集、储存和释放水是这方面的前进方向。在这里，我们建议利用的研究水文过程的第一阶段的CAOS项目（项目H）的框架内进行的46个集群网站和嵌套集水实验，以提高我们的理解是什么占主导地位的控制集水功能的时空变异。依靠多示踪剂（地球化学物质，稳定同位素的O和H，氚）和多传感器（如原位和卫星搭载的土壤水分监测）的方法，我们打算作出贡献，回答存储和水分配的时空变化的基础研究问题。更具体地说，我们打算调查通过我们的嵌套集水区设置位于地质对比阿特特河流域（卢森堡）：-集水存储及其分区的时空动态（即饱和区和非饱和区）;-汇水特征、储存动态、过境时间的时间动态和端元贡献之间的联系;- 通过将主要过程的水文绘图与基于过程的水文建模相结合，对我们新获得的水文过程的理解进行区域化。