Groundwater-surface water interactions: New methods and models to improve understanding of processes and dynamics

Interest in groundwater (GW)-surface water (SW) interactions has grown steadily over the last two decades. New regulations such as the EU Water Framework Directive (WFD) now call for a sustainable management of coupled ground- and surface water resources and linked ecosystems. Embracing this mandate requires new interdisciplinary research on GW-SW systems that addresses the linkages between hydrology, biogeochemistry and ecology at nested scales and specifically accounts for small-scale spatial and temporal patterns of GW-SW exchange. Methods to assess these patterns such as the use of natural tracers (e.g. heat) and integrated surface-subsurface numerical models have been refined and enhanced significantly in recent years and have improved our understanding of processes and dynamics. Numerical models are increasingly used to explore hypotheses and to develop new conceptual models of GW-SW interactions. New technologies like distributed temperature sensing (DTS) allow an assessment of process dynamics at unprecedented spatial and temporal resolution. These developments are reflected in the contributions to this Special Issue on GW-SW interactions. However, challenges remain in transferring process understanding across scales.

Raw project data is available by contacting [e-mail]

近年来，对地下水（GW）与地表水（SW）相互作用的研究兴趣持续增长。随着欧盟水框架指令（WFD）等新法规的出台，目前要求对耦合的地下和地表水资源及其相关生态系统进行可持续管理。接受这一使命需要开展新的跨学科研究，针对地下水-地表水系统，探讨水文、生物地球化学和生态学在嵌套尺度上的联系，并特别考虑地下水-地表水交换的小尺度时空模式。近年来，评估这些模式的方法，如使用自然示踪剂（例如热能）和集成地表-地下数值模型，得到了显著的改进和完善，并加深了我们对过程和动态的理解。数值模型越来越多地被用于探索假设并发展新的地下水-地表水相互作用概念模型。分布式温度传感（DTS）等新技术使得在前所未有的时空分辨率上对过程动态进行评估成为可能。这些进展在本期关于地下水-地表水相互作用的特刊中得到了体现。然而，在跨尺度转移过程理解方面仍存在挑战。

原始项目数据可通过联系 [e-mail] 获取。