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Analytical hydrologic models and the design of policy instruments for groundwater-quality management

Content Provider	Springer Nature Link
Author	Kuwayama, Yusuke Brozović, Nicholas
Copyright Year	2012
Abstract	This paper explores how analytical hydrologic models can inform the effective design and choice of policy instruments to manage groundwater quality by coupling a social-planner’s problem of optimal groundwater-quality management with analytical solutions from the hydrology literature. A theoretical analysis is performed in order to characterize the properties of an optimal emissions policy. The model is then applied in a numerical analysis of groundwater contamination by chloride from highway deicers, demonstrating the relevance of the theoretical results to practical management settings. This analytical approach can help determine which policy instruments are likely to be effective in controlling groundwater pollution, especially if costly numerical groundwater models are not available for the aquifer in question. Unlike previous economic studies of groundwater contamination, this approach defines optimal emissions policies as a function of geophysical parameters employed by hydrologists such as distance between source and sink, groundwater velocity, and aquifer dispersivity. The theoretical section of this paper also demonstrates that the relationship between geophysical parameters and optimal emissions levels may be ambiguous.Cet article examine comment des modèles hydrologiques analytiques peuvent influencer la conception et le choix efficace d’instruments de gestion destinés à gérer la qualité des eaux souterraines en couplant un problème d’optimisation économique de la qualité des eaux souterraines avec des solutions analytiques tirées de la littérature hydrologique. Une analyse théorique est réalisée afin de caractériser les propriétés d’une politique d’épandages optimaux. Le modèle est ensuite appliqué à une analyse numérique de la contamination des eaux souterraines par le chlorure issu des sels de déneigement autoroutier, démontrant la pertinence des résultats théoriques pour une mise en œuvre pratique. Cette approche analytique peut aider à déterminer quels d’instruments de gestion sont vraisemblablement efficaces pour contrôler la pollution des eaux souterraines, particulièrement si des modèles numériques hydrogéologiques coûteux ne sont pas disponibles pour l’aquifère en question. A la différence des études économiques antérieures de contamination des eaux souterraines, cette approche définit des politiques d’épandage optimales en fonction des paramètres géophysiques utilisés par les hydrogéologues tels la distance entre la source et la perte, la vitesse d’écoulement souterrain et la dispersivité de l’aquifère. La partie théorique de cet article démontre aussi que la relation entre les paramètres géophysiques et les niveaux optima d’épandage peut être équivoque.Este trabajo explora como los modelos hidrológicos analíticos pueden informar acerca del diseño efectivo y la elección de instrumentos políticos para manejar la calidad del agua subterránea acoplando el problema social de un planificador de un manejo óptimo de la calidad del agua subterránea con soluciones analíticas de la literatura hidrológica. Se llevó a cabo un análisis teórico para caracterizar las propiedades de una óptima política emisiones. El modelo es luego aplicado a un análisis numérico de contaminación de agua subterránea por cloruro de descongelantes de carreteras, demostrando la relevancia de los resultados teóricos para las cuestiones prácticas del manejo. Este enfoque analítico puede ayudar a determinar que instrumentos políticos son más probablemente efectivos para controlar la contaminación del agua subterránea, especialmente para el acuífero en cuestión por si no se disponen los costosos modelos numéricos de agua subterránea. A diferencia de estudios económicos previos de contaminación de agua subterránea, este enfoque define las políticas óptimas de emisiones en función de parámetros geofísicos empleados por hidrólogos, tales como la distancia entre una fuente y un sumidero, velocidad del agua subterránea y dispersividad del acuífero. La sección teórica de este trabajo también demuestra que la relación entre parámetros y niveles óptimos de emisiones pueden ser ambiguos.这篇文章探讨了解析水文模型是如何通过将社会规划者的优化地下水质量管理的难题与水文学文献中的解析解相结合,用有效的设计和政策手段的选择来管理地下水水质的。为刻画一个优化的排放政策的属性的特征,需进行理论性的分析。随后,此模型就可运用于由高速公路除冰装置造成的地下水氯污染的数值分析,这证实了从理论结果到实践中管理装置的相关性。这种分析方法可以帮助确定哪一种政策手段在控制地下水污染方面可能更有效,特别是当成本高昂的地下水数值模型对问题含水层不适用的时候。与之前地下水污染的经济学研究不同,这种方法将优化的排放政策定义为水文学家所使用的地球物理参数的函数之一,例如源汇项之间的距离、地下水的流速和含水层的分散性等。这篇文章的理论部分也证明了地球物理参数和优化的排放水平之间的关系可能是不明确的。Este artigo explora a forma como os modelos hidrológicos analíticos podem informar sobre o plano eficaz e a escolha de instrumentos de política para gerir a qualidade das águas subterrâneas, associando um problema de planeamento social da gestão ótima da qualidade das águas subterrâneas, com soluções analíticas da literatura em hidrologia. É realizada uma análise teórica, a fim de caraterizar as propriedades de uma política de emissões otimizada. O modelo é então aplicado numa análise numérica de contaminação das águas subterrâneas por cloreto usado em produtos descongeladores de autoestradas, demonstrando a relevância dos resultados teóricos para configurações de gestão práticas. Esta abordagem analítica pode ajudar a determinar quais os instrumentos de política suscetíveis de serem eficazes no controlo da poluição das águas subterrâneas, especialmente se não estão disponíveis modelos numéricos de águas subterrâneas dispendiosos para o aquífero em questão. Ao contrário de estudos económicos anteriores sobre contaminação das águas subterrâneas, esta abordagem define políticas ótimas de emissões em função de parâmetros geofísicos empregados por hidrólogos, tais como a distância entre a fonte e o sumidouro, a velocidade das águas subterrâneas, e a dispersividade do aquífero. A parte teórica deste trabalho demonstra também que a relação entre os parâmetros geofísicos e os níveis ótimos de emissões pode ser ambígua.
Starting Page	957
Ending Page	972
Page Count	16
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	20
Issue Number	5
e-ISSN	14350157
Language	Portuguese
Publisher	Springer-Verlag
Publisher Date	2012-05-09
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundwater protection Socio-economic aspects Analytical solutions USA Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Geology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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