Structural Controls of the Hydrological Functioning of a Floodplain (P03)

在气候温和的典型米德兰集水区，洪泛平原的地下水流主要以向下谷地流动为主。然而，泛滥平原的水文功能也与主要水文地质特征的存在与否有关，并取决于当地地下水系统与不同泛滥平原边缘的连接。该项目的目标是阐明决定水和溶质通量的水文地质驱动因素，并控制泛滥平原边缘的氧化还原反应。我们通过地球物理和水文地质技术确定了边缘在泛滥平原总通量和溶质周转中的相对重要性。这些结果是解释物理和生物地球化学数据的前提，也是随机地下水模型的基础。

In typical midland catchments in moderate climate, groundwater flow in floodplains is mainly down-valley oriented. However, the hydrological functioning of floodplains is also linked to the presence or absence of major hydrogeological features, and depends on the connection of the local groundwater systems to different floodplain margins. The goal of this project is to elucidate the hydrogeological drivers that determine water and solute fluxes across and control the redox reactivity at floodplain margins. We determine the relative importance of the margins to the overall fluxes and solute turnover in the floodplain by geophysical and hydrogeological techniques. The results are a prerequisite for the interpretation of physical and biogeochemical data and feed into the stochastic groundwater models.