Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer

ABSTRACT In arid areas, the efficient management of scarce water resources is key for population survival and development. One of the oldest and greatest ancient water management system in drylands is the filtration gallery. Originated from ancient Persia, they were spread to other regions and cultu...

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Autores principales:	Lictevout,Elisabeth, Abellanosa,Carlos, Maass,Constanza, Pérez,Nicolás, Yáñez,Gonzalo, Véronique,Leonardi
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2020
Materias:	Filtration gallery Arid area Groundwater recharge Pica aquifer Water and geoheritage Northern Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000300529
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spelling	oai:scielo:S0718-710620200003005292020-10-14Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquiferLictevout,ElisabethAbellanosa,CarlosMaass,ConstanzaPérez,NicolásYáñez,GonzaloVéronique,Leonardi Filtration gallery Arid area Groundwater recharge Pica aquifer Water and geoheritage Northern Chile ABSTRACT In arid areas, the efficient management of scarce water resources is key for population survival and development. One of the oldest and greatest ancient water management system in drylands is the filtration gallery. Originated from ancient Persia, they were spread to other regions and cultures, and are found in the oasis of Pica, in the Atacama Desert. A filtration gallery consists of an almost horizontal tunnel dug underground until it reaches a waterbearing zone. It allows to tap and drains out groundwater, and thus a direct contact with groundwater table. With the objective to understand groundwater processes, preserve the water and geoheritage of one of the driest places on Earth and improve land-use planning, the present work explored and studied the filtration galleries, locally called socavones, of the oasis of Pica. Through direct exploration, topographical survey and geo-electrical prospection, 24 socavones were identified, mapped and their main physical features described, showing common traits with filtration galleries described worldwide, but also proper features highlighting their originality. The findings of the geological and hydrogeological studies of the socavones, complemented by physical and chemical analysis, allow to identify new groundwater recharge processes and, thus, to review and complete the hydrogeological model of the local aquifer of Pica. Most socavones are abandoned today, owing to physical and socioeconomic changes. Nevertheless, this study concludes that they can still have a role to play in the groundwater management of this arid area.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.47 n.3 20202020-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000300529en10.5027/andgeov47n3-3272
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Filtration gallery Arid area Groundwater recharge Pica aquifer Water and geoheritage Northern Chile
spellingShingle	Filtration gallery Arid area Groundwater recharge Pica aquifer Water and geoheritage Northern Chile Lictevout,Elisabeth Abellanosa,Carlos Maass,Constanza Pérez,Nicolás Yáñez,Gonzalo Véronique,Leonardi Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
description	ABSTRACT In arid areas, the efficient management of scarce water resources is key for population survival and development. One of the oldest and greatest ancient water management system in drylands is the filtration gallery. Originated from ancient Persia, they were spread to other regions and cultures, and are found in the oasis of Pica, in the Atacama Desert. A filtration gallery consists of an almost horizontal tunnel dug underground until it reaches a waterbearing zone. It allows to tap and drains out groundwater, and thus a direct contact with groundwater table. With the objective to understand groundwater processes, preserve the water and geoheritage of one of the driest places on Earth and improve land-use planning, the present work explored and studied the filtration galleries, locally called socavones, of the oasis of Pica. Through direct exploration, topographical survey and geo-electrical prospection, 24 socavones were identified, mapped and their main physical features described, showing common traits with filtration galleries described worldwide, but also proper features highlighting their originality. The findings of the geological and hydrogeological studies of the socavones, complemented by physical and chemical analysis, allow to identify new groundwater recharge processes and, thus, to review and complete the hydrogeological model of the local aquifer of Pica. Most socavones are abandoned today, owing to physical and socioeconomic changes. Nevertheless, this study concludes that they can still have a role to play in the groundwater management of this arid area.
author	Lictevout,Elisabeth Abellanosa,Carlos Maass,Constanza Pérez,Nicolás Yáñez,Gonzalo Véronique,Leonardi
author_facet	Lictevout,Elisabeth Abellanosa,Carlos Maass,Constanza Pérez,Nicolás Yáñez,Gonzalo Véronique,Leonardi
author_sort	Lictevout,Elisabeth
title	Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
title_short	Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
title_full	Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
title_fullStr	Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
title_full_unstemmed	Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer
title_sort	exploration, mapping and characterization of filtration galleries of the pica oasis, northern chile: a contribution to the knowledge of the pica aquifer
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000300529
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Exploration, mapping and characterization of filtration galleries of the Pica Oasis, northern Chile: A contribution to the knowledge of the Pica aquifer

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