Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)

Mostrar todas las versiones(2)

A distributed groundwater flow model has been constructed, with aggregated inputs and parameters for the entire modeling domain. This simplified approach was carried out in order to characterize general processes and adjust the preliminary conceptual model of the sector. Methodologies to complete th...

Descripción completa

Detalles Bibliográficos
Autores principales: Zimmermann, Erik, Fajardo, Luisa, Entraigas, Ilda
Formato: Artículo revista
Lenguaje:Español
Publicado: CURIHAM: Centro Universitario Rosario de Investigaciones Hidroambientales Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario Director: Dr. Ing. Hernán Stenta Riobamba 245 bis, 2000 Rosario (Santa Fe), Argentina. Telefa 2020
Materias:
modelación flujo subterráneo
área de llanura
evaporación freática
groundwater modeling
flatland area
phreatic evaporation
Acceso en línea:https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/154
Aporte de:
Cuadernos del CURIHAM de Universidad Nacional de Rosario
id I15-R229-article-154
record_format ojs
institution Universidad Nacional de Rosario
institution_str I-15
repository_str R-229
container_title_str Cuadernos del CURIHAM
language Español
format Artículo revista
topic modelación flujo subterráneo
área de llanura
evaporación freática
groundwater modeling
flatland area
phreatic evaporation
spellingShingle modelación flujo subterráneo
área de llanura
evaporación freática
groundwater modeling
flatland area
phreatic evaporation
Zimmermann, Erik
Fajardo, Luisa
Entraigas, Ilda
Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
topic_facet modelación flujo subterráneo
área de llanura
evaporación freática
groundwater modeling
flatland area
phreatic evaporation
author Zimmermann, Erik
Fajardo, Luisa
Entraigas, Ilda
author_facet Zimmermann, Erik
Fajardo, Luisa
Entraigas, Ilda
author_sort Zimmermann, Erik
title Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
title_short Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
title_full Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
title_fullStr Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
title_full_unstemmed Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina)
title_sort preliminary groundwater modeling of a lower sector of arroyo del azul basin (buenos aires, argentina)
description A distributed groundwater flow model has been constructed, with aggregated inputs and parameters for the entire modeling domain. This simplified approach was carried out in order to characterize general processes and adjust the preliminary conceptual model of the sector. Methodologies to complete the discontinuous series of water tables, which were used as the upstream condition, have been proposed. A linear regression between daily precipitation minus evapotranspiration anomalies with a weekly delay and water table levels was selected due to its good results. The aquifer transmissivity, the storage coefficient, a recharge coefficient, a critical depth for evapotranspiration and a shape coefficient for the evapotranspiration vs. water table depth curve were considered as global calibration parameters. The Nash-Sutcliffe efficiency coefficients between modeled and observed levels in six wells ranged between 0.58 and 0.72. After the calibration, it can be affirmed that the parameters obtained allow a satisfactory representation of the evolution of observed groundwater levels and of the spatial patterns of the iso-phreatic curves. The prominent role of the evapotranspiration processis evident, which directly impacts in the aquifer, which representing a very relevant output from the system. In the simulationperiod of 43 months, with dry characteristics, the recharge constituted 17% of the precipitation, 87% of it returned to the atmosphere as evapotranspiration, and the aquifer supplied the 12.7% of the ETo of the period. It was considered that the simplified modeling allowed an acceptable representation of the water table dynamics. 
publisher CURIHAM: Centro Universitario Rosario de Investigaciones Hidroambientales Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario Director: Dr. Ing. Hernán Stenta Riobamba 245 bis, 2000 Rosario (Santa Fe), Argentina. Telefa
publishDate 2020
url https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/154
work_keys_str_mv AT zimmermannerik preliminarygroundwatermodelingofalowersectorofarroyodelazulbasinbuenosairesargentina
AT fajardoluisa preliminarygroundwatermodelingofalowersectorofarroyodelazulbasinbuenosairesargentina
AT entraigasilda preliminarygroundwatermodelingofalowersectorofarroyodelazulbasinbuenosairesargentina
AT zimmermannerik modelacionpreliminardelflujosubterraneoenunsectordelacuencainferiordelarroyodelazulbuenosairesargentina
AT fajardoluisa modelacionpreliminardelflujosubterraneoenunsectordelacuencainferiordelarroyodelazulbuenosairesargentina
AT entraigasilda modelacionpreliminardelflujosubterraneoenunsectordelacuencainferiordelarroyodelazulbuenosairesargentina
first_indexed 2023-05-18T23:05:26Z
last_indexed 2024-08-12T21:37:07Z
_version_ 1807219296414203904
spelling I15-R229-article-1542023-08-01T18:08:52Z Preliminary groundwater modeling of a lower sector of arroyo del Azul basin (Buenos Aires, Argentina) Modelación preliminar del flujo subterráneo en un sector de la cuenca inferior del arroyo del Azul (Buenos Aires, Argentina) Zimmermann, Erik Fajardo, Luisa Entraigas, Ilda modelación flujo subterráneo área de llanura evaporación freática groundwater modeling flatland area phreatic evaporation A distributed groundwater flow model has been constructed, with aggregated inputs and parameters for the entire modeling domain. This simplified approach was carried out in order to characterize general processes and adjust the preliminary conceptual model of the sector. Methodologies to complete the discontinuous series of water tables, which were used as the upstream condition, have been proposed. A linear regression between daily precipitation minus evapotranspiration anomalies with a weekly delay and water table levels was selected due to its good results. The aquifer transmissivity, the storage coefficient, a recharge coefficient, a critical depth for evapotranspiration and a shape coefficient for the evapotranspiration vs. water table depth curve were considered as global calibration parameters. The Nash-Sutcliffe efficiency coefficients between modeled and observed levels in six wells ranged between 0.58 and 0.72. After the calibration, it can be affirmed that the parameters obtained allow a satisfactory representation of the evolution of observed groundwater levels and of the spatial patterns of the iso-phreatic curves. The prominent role of the evapotranspiration processis evident, which directly impacts in the aquifer, which representing a very relevant output from the system. In the simulationperiod of 43 months, with dry characteristics, the recharge constituted 17% of the precipitation, 87% of it returned to the atmosphere as evapotranspiration, and the aquifer supplied the 12.7% of the ETo of the period. It was considered that the simplified modeling allowed an acceptable representation of the water table dynamics.  Se contruyó un modelo de flujo subterráneo, de carácter distribuido, con entradas y parámetros uniformes para todo el dominio de modelación. Este abordaje simplificado se realizó con el fin de caracterizar procesos generales y ajustar el modelo conceptual preliminar en el área de llanura del arroyo del Azul. Se propusieron metodologías a fin de completar las series discontinuas de niveles freáticos que fueron utilizados como condición de borde aguas arriba seleccionando una regresión lineal entre anomalías diarias de diferencias entre precipitación y evapotranspiración potencial con un retardo semanal con resultados de ajuste satisfactorios. Se consideraron como parámetros globales de calibración la transmisividad del acuífero, el coeficiente de almacenamiento, un coeficiente de recarga, una profundidad crítica para la evapotranspiración y un coeficiente de forma para la curva evapotranspiración vs. profundidad freática. Los coeficientes de eficiencia de Nash-Sutcliffe entre niveles modelados y observados en 6 pozos de control oscilaron entre 0.58 y 0.72. Tras la calibración, se concluyó que los parámetros obtenidos permiten una representación satisfactoria de la evolución de los niveles freáticos en los pozos de observación y de los patrones espaciales de las isofreáticas. Se pone en evidencia el rol prominente del proceso de evapotranspiración, el cual impacta directamente en el acuífero, representando una salida relevante del sistema. En el período de simulación de 43 meses, de características levemente secas, la recarga constituyó el 17 % de la precipitación, el 87 % de la misma retornó a la atmósfera como evapotranspiración, y el acuífero abastecería el 12.7 % de la evapotranspiración potencial del período. Se considera que la modelación simplificada permitió una aceptable representación del comportamiento del acuífero freático. CURIHAM: Centro Universitario Rosario de Investigaciones Hidroambientales Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario Director: Dr. Ing. Hernán Stenta Riobamba 245 bis, 2000 Rosario (Santa Fe), Argentina. Telefa 2020-12-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/154 10.35305/curiham.v26i0.154 Cuadernos del CURIHAM is a half-year publication of the Centro Universitario de Rosario of hydro-environmental research directed by Adelma Mancinelli. It is dedicated to spreading the results of basic and applied research as well as technological innovations on the realm of hidro-environmental issues. It may include field study results, interdisciplinary studies or studies on the state of art on the field: basic hydraulics, fluvial and hydrodinamics, superficial and underground hydrology, urban and stochastic hydrology, planning and management of hydric resources, environmental evaluation, pollution and quality of the water, politics and water legislation, regional hydro-environmental management, hydraulic construction, methods and techniques and everything related to hydro-environmental sciences.; Vol. 26 (2020); 21-30 Cuadernos del CURIHAM; Vol. 26 (2020); 21-30 2683-8168 spa https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/154/112 https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/154/197 https://creativecommons.org/licenses/by-nc-sa/4.0

Ejemplares similares