NDLI: Groundwater flow modelling of the regional aquifer of the Pampa del Tamarugal, northern Chile

Please wait, while we are loading the content...

Groundwater and surface-water interactions in a confined alluvial aquifer between two rivers: effects of groundwater flow dynamics on high iron anomaly

Deuterium composition and flow path analysis as additional calibration targets to calibrate groundwater flow simulation in a coastal wetlands system

Groundwater flow modelling of the regional aquifer of the Pampa del Tamarugal, northern Chile

Analyzing unsaturated flow patterns in fractured rock using an integrated modeling approach

Hydrogeology of the Winnipeg Formation in Manitoba, Canada

Isotope hydrochemical approach to understand fluoride release into groundwaters of Ilkal area, Bagalkot District, Karnataka, India

Hydrogeochemistry of a deep gas-storage cavern, Czech Republic

Allocating local groundwater monitoring stations for South Korea using an analytic hierarchy process

Hydrogeology Journal : Volume 15, Issue 2, March 2007

Hydrogeology Journal : Volume 15, Issue 1, February 2007

Hydrogeology Journal : Volume 14

Hydrogeology Journal : Volume 13

Hydrogeology Journal : Volume 12

Hydrogeology Journal : Volume 11

Hydrogeology Journal : Volume 10

Hydrogeology Journal : Volume 9

Hydrogeology Journal : Volume 8

Hydrogeology Journal : Volume 7

Hydrogeology Journal : Volume 6

Hydrogeology Journal : Volume 5

Groundwater flow modelling of the regional aquifer of the Pampa del Tamarugal, northern Chile

Content Provider	Springer Nature Link
Author	Rojas, Rodrigo Dassargues, Alain
Copyright Year	2006
Abstract	The Pampa del Tamarugal Aquifer (PTA) is an important source of groundwater in northern Chile. In this study, a groundwater flow model of this aquifer is developed and calibrated for the period 1983–2004. The model reproduces the observed flow-field and the water balance components reasonably well. Five scenarios are defined to evaluate the response to different pumping situations. These scenarios show that groundwater heads will continue to decrease with the present pumping discharge rates. To account for variations in the model results due to uncertainties in average recharge rates, randomly generated recharge realizations with different levels of uncertainty are simulated. Evaporation flow rates and groundwater flowing out of the modelled area seem unaffected by the recharge uncertainty, whereas the storage terms can vary considerably. For the most intensive pumping scenario under the generated random recharge rates, it is unlikely that the cumulative discharged volume from the aquifer, at the end of the simulation period, will be larger than 12% of the estimated groundwater reserve. Fluctuations in simulated groundwater heads due to uncertainties in the average recharge values are more noticeable in certain areas. These fluctuations could explain unusual behaviour in the observed groundwater heads in these areas.L’aquifère de la Pampa del Tamarugal (PTA) représente une importante source d’eau souterraine dans le Nord du Chili. Dans cette étude, un modèle d’écoulement souterrain de cet aquifère est réalisé et calibré pour la période 1983–2004. Celui-ci reproduit le champs d’écoulement observé et les composantes du bilan d’eau raisonnablement bien. Cinq scénarios sont définis pour évaluer la réponse du système à des conditions de pompage différentes. D’après ces scénarios, les niveaux piézomètriques vont continuer à baisser sous l’effet des taux de pompage actuels. Pour tenir compte de la variabilité des résultats du modèle due aux incertitudes sur les taux de recharge moyens, des épisodes de recharge, générés aléatoirement et présentant différents niveaux d’incertitude sont simulés. Les taux d’évaporation et l’eau souterraine s’écoulant hors de la zone modélisée semblent non affectés par l’incertitude sur la recharge, les termes d’emmagasinement en revanche peuvent varier considérablement. Dans le cas du scénario avec le pompage le plus important et des taux de recharge aléatoires, il est peu probable que le volume cumulé pompé hors de l’aquifère à la fin de la simulation atteigne une valeur supérieure à 12% de la réserve d’eau souterraine estimée. Les fluctuations des niveaux piézomètriques simulés liées aux incertitudes sur les recharges moyennes sont plus perceptibles dans certaines zones. Ces fluctuations pourraient expliquer un comportement inhabituel des niveaux piézomètriques observés dans ces zones.El Acuífero de la Pampa del Tamarugal (PTA) es una fuente importante de agua subterránea en el norte de Chile. En este estudio se desarrolla y calibra un modelo de flujo de agua subterránea para el periodo 1983–2004. El modelo reproduce razonablemente bien el campo de flujo observado y los componentes del balance hídrico. Se definen cinco escenarios para evaluar la respuesta a diferentes situaciones de bombeo. Estos escenarios muestran que con las tasas de descarga de bombeo actuales las presiones de agua subterránea continuarán en descenso. Para explicar las variaciones en los resultados del modelo debidas a incertidumbres en tasas de recarga promedio se han simulado realizaciones de recarga generadas aleatoriamente con diferentes niveles de incertidumbre. Las tasa de flujo por evaporación y el agua subterránea que fluye fuera del área modelizada parecen no haber sido afectadas por la incertidumbre en recarga mientras que los términos de almacenamiento pueden variar considerablemente. Para el escenario de bombeo más intenso, bajo las tasas de recarga generadas aleatoriamente, no es probable que el volumen descargado acumulado del acuífero al final del periodo de simulación sea mayor del 12% de la reserva de agua subterránea estimada. Las fluctuaciones en las presiones simuladas de agua subterránea debido a las incertidumbres en los valores de recarga promedio son más notorios en ciertas áreas. Las fluctuaciones podrían explicar el comportamiento inusual en las presiones de agua subterránea observadas en estas áreas.
Starting Page	537
Ending Page	551
Page Count	15
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	15
Issue Number	3
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-08-10
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arid regions Numerical modelling Groundwater recharge Stochastic Atacama Desert 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

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Spatial and temporal constraints on regional-scale groundwater flow in the Pampa del Tamarugal Basin, Atacama Desert, Chile

Estimating groundwater recharge in a cold desert environment in northern China using chloride

Groundwater recharge in irrigated semi-arid areas: quantitative hydrological modelling and sensitivity analysis

Analysis of subsurface temperature data to quantify groundwater recharge rates in a closed Altiplano basin, northern Chile

Determining groundwater degradation from irrigation in desert-marginal northern China

Groundwater flow modelling of multi-aquifer systems for regional resources evaluation: the Gdansk hydrogeological system, Poland

Water balance in the playa-lakes of an arid environment, Monegros, NE Spain

Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)

A doubly invisible aquifer: Hydrogeological studies and actors' strategies in the Pampa del Tamarugal aquifer, northern Chile

Groundwater flow modelling of the regional aquifer of the Pampa del Tamarugal, northern Chile

Similar Documents

Spatial and temporal constraints on regional-scale groundwater flow in the Pampa del Tamarugal Basin, Atacama Desert, Chile

Estimating groundwater recharge in a cold desert environment in northern China using chloride

Groundwater recharge in irrigated semi-arid areas: quantitative hydrological modelling and sensitivity analysis

Analysis of subsurface temperature data to quantify groundwater recharge rates in a closed Altiplano basin, northern Chile

Determining groundwater degradation from irrigation in desert-marginal northern China

Groundwater flow modelling of multi-aquifer systems for regional resources evaluation: the Gdansk hydrogeological system, Poland

Water balance in the playa-lakes of an arid environment, Monegros, NE Spain

Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)

A doubly invisible aquifer: Hydrogeological studies and actors' strategies in the Pampa del Tamarugal aquifer, northern Chile

Groundwater flow modelling of the regional aquifer of the Pampa del Tamarugal, northern Chile