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

职业：推进对河流廊道水文交换的预测性理解

• 批准号: 2334072
• 负责人: Adam Ward
• 金额: $ 71.65万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-06-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2334072&HistoricalAwards=false
• 关键词: CAREER; Advancing; predictive; understanding; hydrologic

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.

目前，预测和管理污染物污染物的命运和运输所需的具体知识目前不足。该项目将利用概念性河流走廊的视角，该视角考虑了地表水，近地表沉积物，洪水区，山坡流域，并贡献了地下水含水层作为连续性。 该项目将考虑在各个空间和时间尺度上以及各种隔室的水，溶质，能量和材料的交换。该项目的重点是三个主要目标：（1）提高我们对河走廊中动态交换过程的理解； （2）开发方法将发现从地貌特征扩展到覆盖范围和网络量表； （3）提高预测能力，可以很容易地实施，而无需对感兴趣的站点进行广泛的现场表征。这项研究的结果将提高我们预测河流走廊污染物的运输和命运的能力，从而更有效地管理水资源。综合教育和研究计划将激发一群不同的K-12和本科生在STEM领域从事职业。 项目目标是制定一项综合研究计划，旨在推进对河流走廊中的水文交流以及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透视图，该河流的视角，其低层区域，河岸带，山坡和含水层作为连续体，在空间和颞尺度上交换水，溶质，能量和材料。拟议的研究将在单个地貌特征和研究范围的规模上量化河流走廊交换中的空间和时间异质性，并将合成结果，以在地质环境和水文强迫下沿着天然发生的梯度沿着天然发生的梯度建立河流走廊交换的预测关系。 这项研究将特别解决三个研究问题：（1）地质环境和水文强迫的哪些相对静态特征会导致河走廊交换的可预测变化？ （2）通过地质环境和水文强迫之间的动态相互作用控制河流走廊交换的程度？ （3）河流走廊交换的预测关系和模型如何转移？研究工作与包括K-12教育，指导高中和本科研究人员在内的教育活动以及研究生级别的河流走廊科学与管理课程。