INVESTIGADORES
QUIROZ LONDOÑO Orlando Mauricio
congresos y reuniones científicas
Título:
GROUNDWATER RESIDENCE TIME IN THE PAMPEANO AQUIFER (ARGENTINA): MULTILEVEL PIEZOMETERS AND MULTI-TRACERS STUDY.
Autor/es:
DANIEL EMILIO MARTINEZ; ELISE FOURRER; ORLANDO MAURICIO QUIROZ LONDOÑO; PIERE JEAN- BAPTISTE; GLOK GALLI MELISA; A. DAPOIGNY; SEBASTIAN GRONDONA
Lugar:
Viena
Reunión:
Simposio; International Symposyum on Issotope Hydrology ?Revisiting foundations and exploring frontiers?.; 2015
Institución organizadora:
OIEA
Resumen:
The Pampeano Aquifer is an unconfined hydrogeological unit covering a large area in the Argentine Pampas. In order to improve the groundwater residence time knowledge four sets of three nested multilevel piezometers were drilled in selected locations at two catchments in the Pampas plain. Groundwater samples at three different depths have been took and transit time was determined through CFCs and 3H/3He measurements. CFCs and 3H/3He obtained residence times are in relative good agreement, ranging between 20 to more than 60 years. Clear trends in residence time increase with sampling depth are observed. Differences among catchments and recharge or discharge areas can be recognized. It is noticeable that instead at the shallower sampling depths water having residence time in the order of 20 years is found.
