IHLLAInstituto de Hidrología de Llanurashttps://digital.cic.gba.gob.ar/handle/11746/80https://digital.cic.gba.gob.ar/retrieve/6e75785f-2199-4b55-8d80-289d6689389c/2024-03-29T11:32:40Z2024-03-29T11:32:40Z2111A method for soil moisture probes calibration and validation of satellite estimatesHolzman, MauroRivas, Raúl EduardoCarmona, FacundoNiclos, Raquelhttps://digital.cic.gba.gob.ar/handle/11746/80972018-12-20T20:02:25Z2017-07-01T00:00:00Zdc.type: Artículo
dcterms.isPartOf.*: vol. 4; MethodsX
dcterms.abstract: Optimization of field techniques is crucial to ensure high quality soil moisture data. The aim of the work is to present a sampling method for undisturbed soil and soil water content to calibrated soil moisture probes, in a context of the SMOS (Soil Moisture and Ocean Salinity) mission MIRAS Level 2 soil moisture product validation in Pampean Region of Argentina. The method avoids soil alteration and is recommended to calibrated probes based on soil type under a freely drying process at ambient temperature. A detailed explanation of field and laboratory procedures to obtain reference soil moisture is shown. The calibration results reflected accurate operation for the Delta-T thetaProbe ML2x probes in most of analyzed cases (RMSE and bias ≤ 05m³/m³). Post-calibration results indicated that the accuracy improves significantly applying the adjustments of the calibration based on soil types (RMSE ≤ 0.022m³/m³, bias ≤ 0.010m³/m³).
dcterms.publisher: Elsevier
dc.description.*: Submitted by Mauro Holzman (m.holzman@ihlla.org.ar) on 2018-05-22T15:55:32Z workflow start=Step: CIC-ADMIN_review - action:claimaction
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dc.title: A method for soil moisture probes calibration and validation of satellite estimates
2017-07-01T00:00:00ZA methodology for assessing public health risk associated with groundwater nitrate contamination: a case study in an agricultural setting (southern Spain)Chica-Olmo, MarioPeluso, Fabio OscarLuque-Espinar, Juan AntonioRodriguez-Galiano, VictorPardo-Igúzquiza, EulogioChica-Rivas, Lucíahttps://digital.cic.gba.gob.ar/handle/11746/57272017-05-12T16:37:39Z2016-09-28T00:00:00Zdc.type: Artículo
dcterms.isPartOf.*: Environmental Geochemistry and Health
dcterms.abstract: Groundwater nitrate contamination from agriculture is of paramount environmental interest. A continuous consumption of polluted water as drinking water or for culinary purposes is by no means a minor hazard for people’s health that must be studied. This research presents a new methodology for the spatial analysis of health risk rate from intake of nitrate-polluted groundwater. The method is illustrated through its application to a water quality sampling campaign performed in the south of Spain in 2003. The probability risk model used by the US Environmental Protection Agency has been applied, considering a residential intake framework and three representative population age groups (10, 40 and 65years).The method was based upon coupling Monte Carlo simulations and geostatistics, which allowed mapping of the health risk coefficient (RC). The maps obtained were interpreted in the framework of water resources management and user’s health protection (municipalities). The results showed waterborne health risk caused by nitrate-polluted water is moderately low for the region. The observed risk was larger for the elderly and children, although no significant differences were found among the three age groups (RC average values of 95th percentile for age of 0.37, 0.33 and 0.37, respectively). Significant risk values of RC>1 were obtained for 10% of the surface in the NW site of the study area, where the municipalities with the highest contamination thresholds are located (agricultural activity). Nitrate concentration and intake rate stood out as the main explanatory variables of the RC.
dc.description.*: Submitted by Fabio Peluso (fpeluso@faa.unicen.edu.ar) on 2017-05-11T18:34:14Z workflow start=Step: CIC-ADMIN_review - action:claimaction
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dc.title: A methodology for assessing public health risk associated with groundwater nitrate contamination: a case study in an agricultural setting (southern Spain)
2016-09-28T00:00:00ZA Novel Approach for the Integral Management of Water Extremes in Plain AreasGuevara, CristianMasson, IgnacioCazenave, GeorginaVives, LuisVázquez Amábile, Gabrielhttps://digital.cic.gba.gob.ar/handle/11746/105652021-08-11T18:04:37Z2019-08-15T00:00:00Zdc.type: Artículo
dcterms.isPartOf.*: vol. 6, no.3; Hydrology
dcterms.abstract: Due to the socioeconomical impact of water extremes in plain areas, there is a considerable demand for suitable strategies aiding in the management of water resources and rainfed crops. Numerical models allow for the modelling of water extremes and their consequences in order to decide on management strategies. Moreover, the integration of hydrologic models with hydraulic models under continuous or event-based approaches would synergistically contribute to better forecasting of water extreme consequences under different scenarios. This study conducted at the Santa Catalina stream basin (Buenos Aires province, Argentina) focuses on the integration of numerical models to analyze the hydrological response of plain areas to water extremes under different scenarios involving the implementation of an eco-efficient infrastructure (i.e., the integration of a green infrastructure and hydraulic structures). The two models used for the integration were: the Soil and Water Assessment Tool (SWAT) and the CELDAS8 (CTSS8) hydrologic-hydraulic model. The former accounts for the processes related to the water balance (e.g., evapotranspiration, soil moisture, percolation, groundwater discharge and surface runoff), allowing for the analysis of water extremes for either dry or wet conditions. Complementarily, CTSS8 models the response of a basin to a rainfall event (e.g., runoff volume, peak flow and time to peak flow, flooded surface area). A 10-year data record (2003–2012) was analyzed to test different green infrastructure scenarios. SWAT was able to reproduce the waterflow in the basin with Nash Sutcliffe (NS) efficiency coefficients of 0.66 and 0.74 for the calibration and validation periods, respectively. The application of CTSS8 for a flood event with a return period of 10 years showed that the combination of a green infrastructure and hydraulic structures decreased the surface runoff by 28%, increased the soil moisture by 10% on an average daily scale, and reduced the impact of floods by 21% during rainfall events. The integration of continuous and event-based models for studying the impact of water extremes under different hypothetical scenarios represents a novel approach for evaluating potential basin management strategies aimed at improving the agricultural production in plain areas.
dcterms.publisher: MDPI
dc.description.*: Submitted by Ignacio Masson (imasson.ihlla@gmail.com) on 2020-05-14T14:57:25Z workflow start=Step: CIC-ADMIN_review - action:claimaction
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A Novel Approach for the Integral Management.pdf-PDFA.pdf: 8998236 bytes, checksum: 1c68a5b63bcab1efb6a9118ee486c7fe (MD5)
dc.title: A Novel Approach for the Integral Management of Water Extremes in Plain Areas
2019-08-15T00:00:00ZAdaptación del modelo de Rivas y Caselles para el cálculo de la evapotranspiración con datos del producto MODIS MYD11A2Rivas, Raúl EduardoBayala, Martín IgnacioCarmona, FacundoHolzman, MauroDegano, María FlorenciaMancino, Christian Albertohttps://digital.cic.gba.gob.ar/handle/11746/55562018-03-21T12:34:25Z2016-11-07T00:00:00Zdc.type: Documento de conferencia
dcterms.relation: Informe de personal de apoyo: Mancino, Christian Alberto (2016-2017)
dcterms.isPartOf.*: XVII Simposio Internacional en Percepción Remota y Sistemas de Información Geográfica; XVII Simposio Internacional en Percepción Remota y Sistemas de Información Geográfica SELPER (Misiones, 2016)
dcterms.abstract: Por medio de los procesos de evaporación (<em>Ev</em>) y transpiración (<em>T</em>) se pierde más del 85 % del agua que ingresa como precipitación al sistema pampeano. Por lo tanto, es necesario hacer esfuerzos en estimar la salida de agua del sistema con buena resolución espacial (a nivel de ambientes como mínimo) y temporal (a escala decádica o semanal). En este sentido, diversos autores han propuesto distintos métodos mas o menos complejos para el cálculo de la evapotranspiración (<em>ET</em> = <em>Ev</em> +<em> T</em>). Rivas y Caselles (2004) propusieron una ecuación muy simple, derivada del modelo de Penman Monteith, que permite obtener la evapotranspiracion potencial sobre pasto corto (<em>ET0</em>) utilizando solamente la temperatura radiativa de superficie (<em>Ts</em>) obtenida desde de satélite. La ecuación propuesta es del tipo <em>ET0 = a * Ts + b</em>, donde <em>a </em>y <em>b </em>son dos parámetros de naturaleza local que se ajustan a partir de registros metereológicos básicos. En este trabajo, se propone una modificación del modelo original de Rivas y Caselles (2004) y se aplica en en la Región Pampeana (RP). La modificación propuesta consiste en utilizar el producto MODIS-MYD11A2 (<em>Ts</em>MYD11A2 de Ts 8 días) en lugar de la tradicional <em>Ts</em> (a la hora de máxima radiación). Para ello, los nuevos parámetros <em>a</em> y <em>b </em>se ajustan directamente por medio de una regresión lineal entre la <em>ET0</em> obtenida en 5 estaciones meteorológicas ubicadas en diferentes ambientes de la RP (semiárido, interserrano, pampa arenosa, sierras septentrionales, y pampa deprimida) y los valores de la <em>Ts</em>MYD11A2 extraídos para las ubicaciones de cada una de las estaciones utilizadas. Un total de 521 imágenes del producto MODIS-MYD11A2 fue utilizado (2002 - 2013), resultando 2605 pares de datos <em>ET0</em>-<em>Ts</em>MYD11A2.El 50% de los datos se utilizó para ajustar los parámetros del modelo, obteniendose valores de <em>a</em> = 0,144 ±0,003 mm °C-1 día-1 y <em>b</em> = -1,19 ±0,07 mm día-1, mientras que el 50% de datos restantes se utilizó para evaluar la ecuación propuesta, obteniéndose un error muy bajo de ±0,8 mm día-1 en el cálculo de la <em>ET0 </em>promedio diaria cada 8 días. Finalmente, algunos mapas de <em>ET0</em> se elaboraron para la región de estudio, donde queda en evidencia la fácil aplicabilidad del método, obteniéndose resultados con errores menores o similares a modelos de mayor complejidad operativa.; More than 85% of precipitation in pampean region (RP) is lost through evaporation and transpiration processes. Therefore, efforts should be done to estimate that losses with adequate spatial (at least at landscape scale) and temporal resolution (decadal or weekly scale). In this sense, several authors have proposed different methods to calculate evapotranspiration (<em>ET</em> = <em>Ev</em> +<em> T</em>). Rivas and Caselles (2004) proposed a simple equation, based on Penman Monteith model, that allows to obtain potential evapotranspiration over a short grass (<em>ET0</em>) using only surface temperature (Ts) from satellite. The proposed equation is <em>ET0 = a * Ts + b</em>, where<em>a </em>and<em>b</em> are local parameters adjusted from basic meteorological data. In this work the model of Rivas and Caselles (2004) is modified and applied over pampean region. The modified model uses the product MODIS-MYD11A2 (<em>Ts</em>MYD11A28-days Ts) instead of the traditional Ts (maximum radiation of the day). The new <em>a</em> and <em>b</em> parameters are adjusted using a linear regression between the <em>E0</em> obtained from 5 meteorological stations located in different environments of the RP (semi-arid, inter-hill, sandy pampas, hills, flooding pampas) and <em>Ts</em>MYD11A2 for each station. A total of 521 MODIS-MYD11A2 images (2002-2013) was considered, achieving 2605 pair of <em>ET0</em>-<em>Ts</em>MYD11A2 data. 50% of data were used to adjust the parameters of the model, obtaining the following values:<em>a</em> = 0.144 ±0.003 mm °C-1 day-1 and <em>b</em> = -1.19 ±0.07 mm day-1. The remaining 50% of data were used to evaluate the proposed equation, obtaining a very low error of ±0.8 mm día-1in the daily average ET0 for 8 days. Finally, maps of ET0 for the study region are shown, reflecting the straightforward applicability of the method with errors similar or lower that more complex models.
dcterms.description: El presente artículo fue presentado en el Simposio Internacional SELPER realizado en Iguazú, provincia de Misiones, Argentina, en el mes de noviembre del año 2016.
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Rivas Degano - Adaptación .pdf-PDFA.pdf: 113634 bytes, checksum: 8c3dcee3b0f987c491737f1142137198 (MD5)
dc.title: Adaptación del modelo de Rivas y Caselles para el cálculo de la evapotranspiración con datos del producto MODIS MYD11A2
2016-11-07T00:00:00ZAdsorción de bajas concentraciones de uranio en granitoUsunoff, EduardoCarrera, Jesúshttps://digital.cic.gba.gob.ar/handle/11746/41062016-08-31T13:07:35Z1995-09-01T00:00:00Zdc.type: Documento de conferencia
dcterms.isPartOf.*: II Seminario Hispano-Argentino sobre temas Actuales de Hidrología Subterránea (Tucumán)
dcterms.abstract: Este trabajo contiene los resultados de la reelaboración de datos experimentales emergentes de la adsorción de uranio en granito. Partiendo de una isoterma de Freundlich, se consideró que ciertas hipótesis experimentales no eran enteramente correctas y se obtuvo una nueva isoterma. Puesto que ambas isotermas sugieren una adsorción de uranio mayor a lo esperable y que no son lineales, se efectuó la consideración del efecto del contenido natural de uranio del agua que albergaba el granito. Fue así posible comprobar que la adsorción no constituía un fenómeno relevante con bajas concentraciones de uranio en solución, y que era factible considerar que el modelo de adsorción era lo suficientemente lineal como para poderlo incluir en la instancia oosterior de modelación del mecanismo de flujo de agua y transporte de uranio.
dcterms.description: Publicado en Serie Correlación geológica ; no. 11.
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dc.title: Adsorción de bajas concentraciones de uranio en granito
1995-09-01T00:00:00ZAnalysis and Correction of Digital Elevation Models for Plain AreasGuevara Ochoa, CristianVives, LuisZimmermann, ErikMasson, IgnacioFajardo González, Luisa FernandaScioli, Carloshttps://digital.cic.gba.gob.ar/handle/11746/99532019-05-09T20:01:50Z2019-03-01T00:00:00Zdc.type: Artículo
dcterms.isPartOf.*: vol. 85, no. 3; Photogrammetric Engineering and Remote Sensing
dcterms.abstract: Water movement modeling in plain areas requires digital elevation models (DEMs) adequately representing the morphological and geomorphological land patterns including the presence of civil structures that could affect water flow patterns. This has a direct effect on water accumulation and water flow direction. The objectives of this work were to analyze, compare and improve DEMs so surface water movement in plain areas could be predicted. In order to do that, we evaluated the accuracy of a digital elevation data set consisting in 4064 points measured with a differential global positioning system (GPS) in a plain area of central Buenos Aires province. Three DEMs were analyzed: (1) the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), (2) the Shuttle Radar Topography Mission (SRTM) and (3) the Advanced Land Observing Satellite with the Phased Array Type L-Band Synthetic Aperture Radar (ALOS PALSAR).
Several topographic attributes (i.e., height, surface area, land slope, delimitation of geomorphological units, civil structures, basin boundaries and streams network) and different interpolation methods were analyzed. The results showed that both the SRTM and the ALOS PALSAR DEMs had a ± 4.4 m root mean square error (RMSE) in contrast to the ASTER DEM which had a ± 9 m RMSE. Our analysis proved that the best DEM representing the study area is the SRTM. The most suitable interpolation methods applied to the SRTM were the inverse distance weighting and the ANUDEM, whereas the spline method displayed the lowest vertical accuracy. With the proposed method we obtained a DEM for the study area with a ± 3.2 m RMSE, a 33% error reduction compared to the raw DEM
dc.description.*: Submitted by Ignacio Masson (imasson.ihlla@gmail.com) on 2019-05-08T16:35:10Z workflow start=Step: CIC-ADMIN_review - action:claimaction
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Analysis and Correction of Digital.pdf-PDFA.pdf: 2580699 bytes, checksum: 2706ced55c7c991bdbc27fa02054c133 (MD5)
dc.title: Analysis and Correction of Digital Elevation Models for Plain Areas
2019-03-01T00:00:00ZAnalysis of disaggregation techiques applied to satellite images for the estimation of surface termal parameters at different scalesPiñuela, F.Niclós, R.Sánchez Tomás, J.M.Coll, C.Degano, María FlorenciaRivas, Raúl EduardoBayala, Martín Ignaciohttps://digital.cic.gba.gob.ar/handle/11746/89422019-03-11T20:01:46Z2018-01-01T00:00:00Zdc.type: Documento de conferencia
dcterms.isPartOf.*: Congreso Bienal de IEEE Argentina (IEEE ARGENCON), (San Miguel de Tucumán, 2018); Congreso Bienal de IEEE Argentina (IEEE ARGENCON)
dcterms.abstract: During the last years, both the technological development and the greater availability of geospatial information have led to the emergence of new application areas for remote sensing techniques. This is also relevant in the case of thermal remote sensing. Applications such as crop tracking require a greater availability of thermal information with spatial resolutions appropriate for a more local level scope. However, and despite the increasing availability of remote sensing products that have appeared and are expected to appear in the coming years, thermal infrared data continue to be available at lower spatial resolutions than the visible and nearinfrared data. Numerous authors have developed or tested methods to extract information at the sub-pixel level by using complementary remote sensing products with suitable results for using in applications at higher scales. Most of these methods are based on correlations between some vegetation indexes, such as NDVI, and radiative temperatures for a given cover. They are based on traditional mathematical models, such as linear or quadratic regression. Despite newer analysis tools like Support Vector Machines (SVM) or Neural Networks (NN) have become relevant in the last decade, their application on thermal remote sensing is in an relatively early stage of research and the use of traditional methods remains nowadays. The objective of this study is carrying out a comparison of these methods. A downscaling process from a MODIS temperature product scene has been developed using different methodologies. The results have been evaluated using “in situ” (ground-truth) temperature measurements showing an estimate of the accuracy and the potential of two different techniques.
dc.description.*: Made available in DSpace on 2019-03-11T11:53:51Z (GMT). No. of bitstreams: 1
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dc.title: Analysis of disaggregation techiques applied to satellite images for the estimation of surface termal parameters at different scales
2018-01-01T00:00:00ZAnálisis de la calidad del agua subterránea para riego en la cuenca del Arroyo del AzulBongiorno, CarlosVarni, Marcelo RaúlWeinzettel, Pablo Arielhttps://digital.cic.gba.gob.ar/handle/11746/40962016-08-31T12:56:29Z2003-09-01T00:00:00Zdc.type: Documento de conferencia
dcterms.isPartOf.*: I Seminario; Seminario Hispano-Latinoamericano sobre Temas Actuales de la Hidrología Subterránea
dcterms.abstract: Se analiza la calidad de las aguas subterráneas con referencia a su aptitud para riego en la cuenca del arroyo del Azul, centro de la Provincia de Buenos Aires. Adicionalmente, se analizan también los suelos de la cuenca. El análisis se hace en un conjunto de lugares elegidos con apoyo en una regionalización ecológica previa de la cuenca. La aptitud del agua para regar se verifica a través de dos criterios: el del Laboratorio de Salinidad de Riverside (Richards, 1973) y el de Ayers y Westcot (1985). A pesar de las críticas que puedan hacerse del primero, aquí se lo utiliza dado su difusión generalizada. En ninguno de los criterios se presentan severas limitaciones en cuanto a la calidad del agua, aunque las limitaciones tienden a crecer en el sentido del flujo subterráneo. Se puede llegar a conclusiones análogas con respecto a la aptitud de los suelos, con limitaciones moderadas en la cuenca baja.; The groundwater quality in the Azul creck basin, center of Buenos Aires Province, is analyzed with reference to its aptitude for irrigation. Additionally, are also analyzed the soils of the basin. The analysis is made in a group of places selected with support in a previous ecological regionalization of the basin. The water aptitude for irrigation is verified through two approaches: That of the Laboratory of Salinity of Riverside (Richards, 1973) and that of Ayers and Westcot (1985). In the two approaches no severe limitations are presented for the quality of the water, although the limitations spread to grow in the sense of the underground flow. Similar conclusions are reached with regard to the soils aptitude, with moderated limitations in the low basin.
dc.description.*: Made available in DSpace on 2016-08-30T17:13:29Z (GMT). No. of bitstreams: 1
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dc.title: Análisis de la calidad del agua subterránea para riego en la cuenca del Arroyo del Azul
2003-09-01T00:00:00ZAnálisis de la propuesta de regulación de los recursos hídricos en la provincia de Buenos Aires, ArgentinaUsunoff, EduardoPeluso, Fabio Oscarhttps://digital.cic.gba.gob.ar/handle/11746/41042016-08-31T12:47:29Z1998-11-01T00:00:00Zdc.type: Documento de conferencia
dcterms.isPartOf.*: IV Congreso Latinoamericano de Hidrología Subterránea (Uruguay)
dcterms.abstract: Following concepts of general nature about the environmentally- sustainable development, this paper tests to which extent such aspects are properly addressed in the Buenos Aires Province Water Law, which is currently being discussed in the province’s legislative domain.
The main conclusions about such a law are that: (a) it centralizes the water resources administration by creating the Water Authority, although it also allows for certain aspects being managed by Basin Committees and Water-Users Groups, (b) it clearly spells out the rights and dutties of those directly benefited by water usage, (c) it does not foresee a great deal of involvement of the community as such, (d) it reinforces the role of the technical sector, and (e) it may prove to be very difficult to be ruled out.; Luego de consideraciones de tipo general con respecto al desarrollo ambientalmente sustentable, este trabajo trata de comprobar hasta qué punto sus aspectos esenciales están contemplados en la Ley de Aguas de la Provincia de Buenos Aires, que se encuentra en discusión en ámbitos legislativos provinciales.
Se concluye que la normativa en discusión: (a) centraliza administrativamente los diversos aspectos del manejo de los recursos hídricos en la Autoridad del Agua, aunque descentraliza ciertas funciones en los Comités de Cuenca y las Comunidades de Usuarios, (b) desglosa adecuadamente los derechos y obligaciones del sector privado que se beneficia con el uso del agua, (c) no prevee un grado importante de participación de la comunidad no productora de bienes o servicios, (d) revitaliza el rol de los estamentos técnicos, y (e) puede revelar severas dificultades a la hora de proceder a su reglamentación.
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dc.title: Análisis de la propuesta de regulación de los recursos hídricos en la provincia de Buenos Aires, Argentina
1998-11-01T00:00:00ZAnálisis de la relación entre un cuerpo de agua superficial y las aguas subterráneas en la Llanura Pampeana, ArgentinaVarni, Marcelo RaúlRivas, Raúl Eduardohttps://digital.cic.gba.gob.ar/handle/11746/40972016-08-31T12:54:25Z2000-01-01T00:00:00Zdc.type: Documento de conferencia
dcterms.isPartOf.*: I Joint World Congress on Groundwater
dcterms.abstract: En la denominada Pampa Deprimida el relieve es sumamente llano y abundan pequeñas depresiones que, dadas las características de subhúmeda a húmeda de la llanura, están colmadas de agua gran parte del año y marcan en el paisaje un sinnúmero de cuerpos de agua de variadas dimensiones y de profundidades inferiores a los 2 metros. Estas depresiones juegan un papel aparentemente muy importante aunque aún no dilucidado en el balance hídrico del acuífero freático. Para analizar el funcionamiento hidrológico de estas depresiones se ha seleccionado un cuerpo de agua en el que se registran su nivel y el de las aguas subterráneas, el flujo a través del fondo de la depresión, los contenidos iónicos de las aguas y las variables climáticas.
Los niveles de la laguna están casi continuamente por encima del nivel freático. Esto es especialmente notable cuando los niveles permanecen relativamente bajos. Cuando se producen importantes precipitaciones los niveles se elevan significativamente, alcanzando la laguna en varias oportunidades su nivel de descarga. Es en esos cortos períodos en que el nivel freático puede superar a la laguna.
El análisis a partir de los valores del flujo a través de los sedimentos del fondo del cuerpo de agua permitió obtener un valor de conductividad hidráulica de dichos sedimentos de 1,6*10-4 m/día. También se han obtenido valores de los exponentes de las ecuaciones de agotamiento de la laguna y del agua subterránea.
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dc.title: Análisis de la relación entre un cuerpo de agua superficial y las aguas subterráneas en la Llanura Pampeana, Argentina
2000-01-01T00:00:00Z