Validez de los resultados obtenidos a partir de las soluciones analíticas de Theis y Cooper-Jacob en ensayos de bombeo realizados en acuíferos costeros
Two pumping tests were performed in the unconfined detrital Motril-Salobreña aquifer in a 250 metre-deep artesian well 300 m from the coastline containing both freshwater and saltwater. The two observation wells where the drawdowns are measured record the influence of tidal fluctuations and a high v...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | español |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/13579 |
| Acceso en línea: | http://hdl.handle.net/10272/13579 |
| Access Level: | acceso abierto |
| Palabra clave: | Pumping test Coastal aquifer Vertical heterogeneity Theis solution Cooper-Jacob solution Ensayo de bombeo Acuífero costero Heterogeneidad vertical Theis Cooper-Jacob |
| Sumario: | Two pumping tests were performed in the unconfined detrital Motril-Salobreña aquifer in a 250 metre-deep artesian well 300 m from the coastline containing both freshwater and saltwater. The two observation wells where the drawdowns are measured record the influence of tidal fluctuations and a high vertical heterogeneity in the aquifer. The Theis and Cooper-Jacob approaches give average T and S values of 1,460 m2/d and 0.027, respectively. Numerical modelling in a synthetic model was applied to analyse the sensitivity of the Theis and Cooper-Jacob approaches to the usual boundary conditions in coastal aquifers. The T and S values calculated from the numerical modelling drawdowns indicate that the regional flow, variable pumping flows, and tidal effect produce an error of under 10% in results obtained with classic methods. Fluids of different density (freshwater and saltwater) cause an error of 20% in estimating T and of over 100% in calculating S. The factor most affecting T and S results in the pumping test interpretation is vertical heterogeneity in sediments, which can produce errors of over 100% in both parameters |
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