Establecimiento preliminar de la posición de la interfase agua dulce-agua salada en el sector de la desembocadura del río Guadalfeo (acuífero Motril-Salobreña) mediante técnicas geofísicas y registros de salinidad
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Abstract
Se realizaron campañas geofísicas (Sondeos electromagnéticos en el dominio
del tiempo y tomografía eléctrica) en el acuífero Motril-Salobreña para
detectar la cuña salina que revelaron incertidumbres acerca de la posición
exacta y la forma que presenta esta. En 2009, se perforó un sondeo de 250
m de profundidad cerca de la línea de costa. Los registros de salinidad en el
sondeo mostraron un cambio de agua dulce a agua salobre que es considerado
como el inicio el inicio de la interfaz agua dulce-agua salada. La información
obtenida a través de los registros de salinidad y los métodos
geofísicos se combinó para presentar una primera aproximación de la morfología
del límite superior de la transición desde agua dulce a agua salada
Several geophysical surveys (time domain electromagnetic soundings and electrical resistivity tomography) have been carried out in Motril-Salobreña aquifer for detecting the saline wedge but there are uncertainties about the exact position and shape. In 2009 a 250 metres depth borehole was drilled near the coastline. Electrical water conductivity logs showed a fresh water-brackish water change that is considered as the beginning of the saltwater-freshwater interface. The information obtained with the logs and the geophysical methods has been combined and an approximation to the upper limit of the saltwater-freshwater interface shape is presented
Several geophysical surveys (time domain electromagnetic soundings and electrical resistivity tomography) have been carried out in Motril-Salobreña aquifer for detecting the saline wedge but there are uncertainties about the exact position and shape. In 2009 a 250 metres depth borehole was drilled near the coastline. Electrical water conductivity logs showed a fresh water-brackish water change that is considered as the beginning of the saltwater-freshwater interface. The information obtained with the logs and the geophysical methods has been combined and an approximation to the upper limit of the saltwater-freshwater interface shape is presented







