NDLI: Interpreting temporal variations in river response functions: an example from the Arkansas River, Kansas, USA

Content Provider	Springer Nature Link
Author	Brookfield, A. E. Stotler, R. L. Reboulet, E. C.
Copyright Year	2017
Abstract	Groundwater/surface-water interactions can play an important role in management of water quality and quantity, but the temporal and spatial variability of these interactions makes them difficult to incorporate into conceptual models. There are simple methods for identifying the presence of groundwater/surface-water interactions; however, identifying flow mechanisms and pathways can be challenging. More complex methods are available to better identify these mechanisms and pathways but are often too time consuming or costly. In this work, a simple method for interpreting and identifying flow mechanisms and sources using temporal variations of river response functions is presented. This approach is demonstrated using observations from two sites along the Arkansas River in Kansas, USA. A change in flow mechanisms between the rising and falling limbs of river hydrographs was identified, along with a second surface-water source to the aquifer, a finding that was validated with stable isotope analyses.Les relations nappe–rivière peuvent jouer un rôle important dans la gestion de la quantité et de la qualité de l’eau, mais la variabilité spatiale et temporelle de ces interactions rend difficile leur prise en compte dans les modèles conceptuels. Il y a des méthodes simples pour identifier l’existence de relations nappe-rivière. Cependant, l’identification des mécanismes et voies d’écoulement peuvent constituer un défi. Des méthodes plus complexes sont disponibles pour mieux identifier ces mécanismes et voies de transfert, mais elles sont souvent trop chronophages et coûteuses. Dans ce travail, une méthode simple est présentée pour interpréter et identifier les mécanismes de transfert et leurs origines, en utilisant les variations temporelles des fonctions de réponse d’une rivière. Cette approche est démontrée en utilisant les observations effectuées pour deux sites sur le cours de la rivière Arkansas, au Kansas (Etats-Unis d’Amérique). Un changement des mécanismes d’écoulement entre les montées et descentes des hydrographes de la rivière a été identifié conjointement avec une deuxième origine d’eau de surface alimentant l’aquifère, un résultat qui a été validé par les analyses d’isotopes stables.Las interacciones agua subterránea–agua superficial pueden desempeñar un papel importante en el manejo de la calidad y cantidad del agua, pero la variabilidad temporal y espacial de estas interacciones hace que sea difícil incorporarlas en los modelos conceptuales. Existen métodos sencillos para identificar la presencia de las interacciones agua subterránea/agua superficial; Sin embargo, la identificación de los mecanismos y trayectorias de flujo puede ser un desafío. Existen métodos más complejos para identificar mejor estos mecanismos y trayectorias, pero a menudo insumen demasiado tiempo o son costosos. En este trabajo, se presenta un método sencillo para interpretar e identificar los mecanismos de flujo y los aportes utilizando las variaciones temporales de las funciones de las respuestas fluviales. Este enfoque se demuestra usando observaciones de dos sitios a lo largo del río Arkansas en Kansas, EEUU. Se identificó un cambio en los mecanismos de flujo entre las ramas ascendentes y descendentes de los hidrogramas del río, junto con un segundo aporte de agua superficial hacia el acuífero, hallazgo que fue validado con análisis de isótopos estables.地下水/地表水相互作用在水的数量和质量管理中可以发挥重要的作用,这些相互作用的时空变化使其很难包含在概念模型中。有确定地下水/地表水相互作用是否存在的简单方法;然而,确定水流机理和水流通道具有挑战性。有更复杂的方法能够更好地确定这些机理和通道,但通常太费时或者代价太高。在本研究中,提出了采用河流响应功能的时间变化解译和确定河流机理和来源的一个简单方法。利用美国堪萨斯州阿肯色河两个地点的观测数据展示了该方法。确定了河流水位图上升和下降翼之间河流机理的变化,以及确定了第二个到含水层的地表水源,这个发现得到了稳定同位素分析的验证。Interações entre águas subterrâneas e superficiais podem desempenhar uma função importante na gestão da qualidade e da quantidade da água, mas a variabilidade temporal e espacial dessas interações as torna difíceis de incorporar à modelos conceituais. Existem métodos simples para identificar a presença de interações entre águas subterrâneas e superficiais; entretanto a identificação de fluxos e caminhos preferenciais pode ser desafiador. Métodos mais complexos estão disponíveis para uma melhor identificar esses mecanismos e caminhos preferenciais mas são geralmente dispendiosos em tempo ou custo. Nesse trabalho, apresenta-se um método simples para interpretar e identificar mecanismos de fluxo e fontes usando variações temporais de funções de resposta fluviais. Essa abordagem é demonstrada usando observações de dois locais ao longo do Rio Arkansas, Kansas, EUA. Uma mudança nos mecanismos de fluxo entre os membros ascendentes e descendentes dos hidrogramas do rio foi identificada, junto com uma segunda fonte de águas superficiais ao aquífero, uma discoberta que foi validada com análises de isótopos estáveis.
Starting Page	1271
Ending Page	1282
Page Count	12
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	25
Issue Number	5
e-ISSN	14350157
Language	Portuguese
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-02-09
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	USA Groundwater/surface-water relations Groundwater flow Groundwater management Stable isotopes Hydrogeology Hydrology/Water Resources Geology Water Quality/Water Pollution Geophysics/Geodesy Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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