IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Groundwater characteristics within loessic deposits: the coastal springs of Los Acantilados, Mar del Plata, Argentina
Autor/es:
CORTIZO, LUIS CAMILO; QUIROZ LONDOÑO, ORLANDO MAURICIO; ISLA, FEDERICO IGNACIO
Revista:
Environmental Earth Sciences
Editorial:
Springer-Verlag GmbH Germany, part of Springer Nature 2018
Referencias:
Lugar: Berlin; Año: 2018 vol. 77
ISSN:
1866-6280
Resumen:
The urban growth of the southern neighborhoods of Mar del Plata City provoked significant changes in the groundwater balance of the loessic sequences. These regional loessic levels with a significant portion of volcanic ash layers were reported subject to fluoride and nitrate concentrations. Residential houses pump from sands located 70 m depth and withdraw the sewages to depths less than 5 m. These effects cause significant local and seasonal (summer) increments of the water table outcropping via springs at certain unconformities of the coastal cliffs. A mathematical model was applied to analyze the water level lowering at the productive levels, while there is a decrease in the quality of the upper levels subject to waste discharges. Much of this groundwater flow is concentrated in unconformities between different types of sediments. Human activities have affected the aquifer dynamics increasing the groundwater pumping rates and the return velocity of the sewages. This should be considered in the management strategies of coastal hydric resources.