CAREER: Advancing predictive understanding of hydrologic exchange in the river corridor

预测和管理河流内污染物的命运和迁移所需的具体知识目前还不够。该项目将利用概念性河流走廊观点，将地表水、近地表沉积物、洪泛区、山坡集水和贡献地下水含水层视为一个连续体。 该项目将考虑水、溶质、能量和材料在一系列空间和时间尺度上以及在这些不同的隔间之间的交换。该项目的重点是三个主要目标：（1）提高我们对河流走廊动态交换过程的理解;（2）开发方法，将地貌特征的发现扩展到范围和网络规模;（3）提高预测能力，无需对感兴趣的站点进行广泛的实地表征即可轻松实施。这项研究的结果将提高我们预测河流走廊中污染物的运输和归宿的能力，从而实现更有效的水资源管理。综合教育和研究计划将激励K-12和本科生的多元化群体追求STEM领域的职业生涯。 该项目的目标是制定一个综合的研究和教育计划，重点是促进对河流走廊水文交换和相关生态系统服务和功能的理解。该项目将利用河流走廊的观点，认为地表流，其潜流区，河岸带，山坡和含水层作为一个连续体，交换水，溶质，能源和材料在一系列的空间和时间尺度。拟议的研究将量化的空间和时间异质性的河流廊道交换在个人的地貌特征和研究达到的规模，并将综合的结果，开发预测关系的河流廊道交换沿着自然发生的梯度在地质环境和水文强迫。 本研究将具体探讨三个研究问题：（1）何种相对静态的地质背景与水文强迫特性，会造成河川廊道交换量的可预测变化？(2)河流廊道交换在多大程度上受地质背景和水文强迫之间的动态相互作用的控制？（3）河流廊道交换的预测关系和模型的可移植性如何？研究工作与教育活动相结合，包括K-12教育，指导高中和本科研究人员，以及研究生水平的河流走廊科学和管理教学课程。

The specific knowledge necessary to predict and manage the fate and transport of contaminants within rivers is currently inadequate. This project will utilize a conceptual river corridor perspective that considers the surface water, near-surface sediments, the flood zone, the hillslope catchment and contributing groundwater aquifers as a continuum. The project will consider the exchange of water, solutes, energy and materials across a range of spatial and temporal scales and across these various compartments. The project focusses on three primary goals: (1) improve our understanding of dynamic exchange processes in the river corridor; (2) develop methods to scale findings from geomorphic features to the reach and network scales; and (3) improve predictive capacity that can be readily implemented without extensive field characterization of sites of interest. Results of this research will improve our ability to predict the transport and fate of contaminants in river corridors, enabling more effective management of water resources. The integrated education and research plans will inspire a diverse group of K-12 and undergraduate students to pursue careers in STEM fields. The project goal is to develop an integrated program of research and education focused on advancing the understanding of hydrologic exchange in river corridors and the associated ecosystem services and functions. The project will utilize a river corridor perspective that considers the surface stream, its hyporheic zone, riparian zone, hillslope, and aquifer as a continuum, exchanging water, solutes, energy and materials across a range of spatial and temporal scales. The proposed research will quantify spatial and temporal heterogeneity in river corridor exchange at the scale of individual geomorphic features and study reaches, and will synthesize results to develop predictive relationships of river corridor exchange along naturally occurring gradients in geologic setting and under hydrologic forcing. This research will specifically address three research questions: (1) What relatively static characteristics of geologic setting and hydrologic forcing cause predictable variation in river corridor exchange?; (2) To what extent is river corridor exchange controlled by the dynamic interaction between geologic setting and hydrologic forcing?; and (3) How transferrable are predictive relationships and models of river corridor exchange? Research efforts are integrated with educational activities including K-12 education, mentoring high-school and undergraduate researchers, and teaching courses on River Corridor Science and Management at the graduate level.