CAREER: Active Learning Across Interfaces: Controls on Flow Intermittency and Water Age in Temporary Streams

职业：跨界面主动学习：临时河流的流量间歇性和水龄控制

• 批准号: 1653998
• 负责人: Sarah Godsey
• 金额: $ 58.37万
• 依托单位: Idaho State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1653998&HistoricalAwards=false
• 关键词: CAREER; Active; Learning; Across; Interfaces

Over 1/3 of the United States' population relies on temporary streams--channels that do not always have water flowing in them--for their water supply. The U.S. Supreme Court and the Environmental Protection Agency have both recently noted the importance of understanding these streams to ensure fishable, swimmable, and drinkable waters throughout the country. Surprisingly, it remains challenging to predict where and when streams will run dry, and which streams will be most likely to shift from flowing year-round to occasionally running dry during droughts. This project will address that gap by mapping where streams are flowing, and linking these maps to expected controls including rainfall, snowmelt, plant water use, and below-ground characteristics. We will collect water samples to test whether these different controls on flow affect water quality. These samples will also indicate how long ago the stream water fell as rain or snow, which may affect how often a stream dries up. In addition, the project will train a diverse group of students from elementary school through graduate school in cutting-edge temporary stream science. New courses will be developed to train college students in environmental field methods and to engage river guides in sharing temporary stream science with whitewater enthusiasts. Finally, the project will work with watershed managers to develop cheaper and better scientific insight into the temporary streams they manage.Temporary streams ?channels with either intermittent or ephemeral flows ? supply water for ~1/3 of the US population and sustain stream ecological health in many headwater systems. Research is needed on the dynamics of channels with flowing surface waters--the active drainage network--and the sensitivity of this network to changes in climate and land use. This work examines potential controls on active drainage network dynamics across a suite of sites, including multiple NSF Critical Zone Observatories. This project will lead to mapped active drainage networks as well as models linking precipitation, evapotranspiration and inferred transmissivity patterns to the active drainage network, including potential effects of intermittency on water quality. The central hypothesis is that transmissivity is the primary control on flow permanence, and that spatial variations in the active drainage network reflect hydraulic conductivity, geometry, and water age. This project will integrate teaching and research by training a diverse undergraduate and graduate student population in temporary stream science, and by engaging them in field research through an intensive environmental field methods course, mentored undergraduate research, and outreach with K-12 students and river guides in collaboration with the U. Idaho McCall Outdoor Science School. Finally, the project will improve regional stream management outcomes through iterative collaboration on targeted joint research and restoration efforts with local watershed managers.

美国超过1/3的人口依赖于临时流 - 并不总是在水中流动的渠道 - 供水。美国最高法院和环境保护局最近都注意到了解这些流以确保全国可捕鱼，可游泳和可饮用的水的重要性。令人惊讶的是，预测溪流在何时和何时干燥，哪些溪流最有可能从全年流动转变为偶尔在干旱期间干燥。该项目将通过映射流的流动方式来解决该差距，并将这些地图与预期的控件联系起来，包括降雨，融雪，植物用水和地下特征。我们将收集水样，以测试这些对流量的不同控制是否影响水质。这些样品还将表明随着雨或雪的形式，溪流水落下多久，这可能会影响溪流干燥的频率。此外，该项目将通过尖端临时流科学的研究生院培训来自小学的一群学生。将开发新的课程，以培训大学生的环境领域方法，并与河流向导与白水爱好者分享临时流科学。最后，该项目将与分水岭经理合作，以对其管理的临时流进行更便宜，更好的科学见解。具有间歇性或短暂流量的频率流？渠道？为美国人口的〜1/3提供水，并在许多源头系统中维持溪流生态健康。需要对具有流动地表水的通道的动力学（主动排水网络）以及该网络对气候和土地使用变化的敏感性进行研究。这项工作研究了对一系列站点的主动排水网络动力学的潜在控制，包括多个NSF临界区观测站。该项目将导致映射的主动排水网络，以及将降水，蒸散量和推断的透射率模式连接到主动排水网络的模型，包括间歇性对水质的潜在影响。中心假设是传播率是流动持久性的主要控制，并且主动排水网络的空间变化反映了水力传导率，几何形状和水年龄。该项目将通过培训临时流科学的多样化的本科和研究生群体来整合教学和研究，并通过强化环境领域方法课程，指导本科生研究，并与K-12学生和河流向导与U. Idaho McCall Outdoor Outdoor Outdoor Science School School。最后，该项目将通过与当地流域经理进行有针对性的联合研究和恢复工作的迭代合作来改善区域管理结果。

项目成果

Dynamic stream network intermittence explains emergent dissolved organic carbon chemostasis in headwaters

• DOI: 10.1002/hyp.13455
• 发表时间: 2019-06-30
• 期刊: HYDROLOGICAL PROCESSES
• 影响因子: 3.2
• 作者: Hale, Rebecca L.;Godsey, Sarah E.
• 通讯作者: Godsey, Sarah E.

Effects of spatial and temporal variability in surface water inputs on streamflow generation and cessation in the rain–snow transition zone

地表水输入的时空变化对雨雪过渡区水流生成和停止的影响

• DOI: 10.5194/hess-26-2779-2022
• 发表时间: 2022
• 期刊: Hydrology and Earth System Sciences
• 影响因子: 6.3
• 作者: Kiewiet, Leonie;Trujillo, Ernesto;Hedrick, Andrew;Havens, Scott;Hale, Katherine;Seyfried, Mark;Kampf, Stephanie;Godsey, Sarah E.
• 通讯作者: Godsey, Sarah E.

Influence of Drying and Wildfire on Longitudinal Chemistry Patterns and Processes of Intermittent Streams

干燥和野火对间歇流纵向化学模式和过程的影响

• DOI: 10.3389/frwa.2020.563841
• 发表时间: 2020
• 期刊: Frontiers in Water
• 影响因子: 2.9
• 作者: MacNeille, Ruth B.;Lohse, Kathleen A.;Godsey, Sarah E.;Perdrial, Julia N.;Baxter, Colden V.
• 通讯作者: Baxter, Colden V.

Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States

• DOI: 10.1029/2020gl090794
• 发表时间: 2021-01-28
• 期刊: GEOPHYSICAL RESEARCH LETTERS
• 影响因子: 5.2
• 作者: Hammond, John C.;Zimmer, Margaret;Allen, Daniel C.
• 通讯作者: Allen, Daniel C.

Drivers of spatiotemporal patterns of surface water inputs in a catchment at the rain-snow transition zone of the water-limited western United States

美国西部水资源有限的雨雪过渡区流域地表水输入时空模式的驱动因素

• DOI: 10.1016/j.jhydrol.2022.128699
• 发表时间: 2023
• 期刊: Journal of Hydrology
• 影响因子: 6.4
• 作者: Hale, K.;Kiewiet, L.;Trujillo, E.;Krohe, C.;Hedrick, A.;Marks, D.;Kormos, P.;Havens, S.;McNamara, J.;Link, T.
• 通讯作者: Link, T.