Where does the water go? Understanding geohydrological behaviour of Andean catchments in south-central Chile
| Autor: | César Pérez, Maxime Souvignet, Héctor Maureira, Diego Rivera, José Luis Arumí, Ricardo Oyarzún |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES Artículos CONICYT CONICYT Chile instacron:CONICYT HYDROLOGICAL SCIENCES JOURNAL |
| ISSN: | 2150-3435 0262-6667 |
| DOI: | 10.1080/02626667.2014.934250 |
| Popis: | Upper Diguillin and Renegado are two neighbouring Andean basins of south-central Chile, with different specific discharges that cannot be explained solely by their difference in size. To address this issue, this study considers three separate but complementary approaches: (a) long-term analysis of rainfall and flow trends; (b) determination of hydrogeological properties at the watershed scale; and (c) analysis of the temporal evolution of groundwater storage. First, a trend test detected a statistically significant discharge decrease for Renegado in summer, unrelated to a coincidental precipitation trend, which seems to be associated with an increased use of water in that season related to tourism activity in the area. Second, there were no important differences in hydraulic conductivity or drainable porosity between the two study areas. However, it was found that there is a long-term negative trend in groundwater storage for Renegado; that is, water that contributes to the lower Diguillin streamf... |
| Databáze: | OpenAIRE |
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