Hydrogeology and sustainable future groundwater abstraction from the Agua Verde aquifer in the Atacama Desert, northern Chile
| العنوان: | Hydrogeology and sustainable future groundwater abstraction from the Agua Verde aquifer in the Atacama Desert, northern Chile |
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| المؤلفون: | Javier Urrutia, Harry Urqueta, José A. Luque, Jorge Jódar, Guillermo Chong, Christian Herrera, Agustín Medina |
| المصدر: | Hydrogeology Journal. 26:1989-2007 |
| بيانات النشر: | Springer Science and Business Media LLC, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | geography, Hydrogeology, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, Groundwater flow, 0208 environmental biotechnology, Climate change, Aquifer, 02 engineering and technology, Groundwater recharge, 01 natural sciences, 020801 environmental engineering, Water resources, Hydrology (agriculture), Earth and Planetary Sciences (miscellaneous), Environmental science, Water resource management, Groundwater, 0105 earth and related environmental sciences, Water Science and Technology |
| الوصف: | The hyper-arid conditions prevailing in Agua Verde aquifer in northern Chile make this system the most important water source for nearby towns and mining industries. Due to the growing demand for water in this region, recharge is investigated along with the impact of intense pumping activity in this aquifer. A conceptual model of the hydrogeological system is developed and implemented into a two-dimensional groundwater-flow numerical model. To assess the impact of climate change and groundwater extraction, several scenarios are simulated considering variations in both aquifer recharge and withdrawals. The estimated average groundwater lateral recharge from Precordillera (pre-mountain range) is about 4,482 m3/day. The scenarios that consider an increase of water withdrawal show a non-sustainable groundwater consumption leading to an over-exploitation of the resource, because the outflows surpasses inflows, causing storage depletion. The greater the depletion, the larger the impact of recharge reduction caused by the considered future climate change. This result indicates that the combined effects of such factors may have a severe impact on groundwater availability as found in other groundwater-dependent regions located in arid environments. Furthermore, the scenarios that consider a reduction of the extraction flow rate show that it may be possible to partially alleviate the damage already caused to the aquifer by the continuous extractions since 1974, and it can partially counteract climate change impacts on future groundwater availability caused by a decrease in precipitation (and so in recharge), if the desalination plant in Taltal increases its capacity. |
| تدمد: | 1435-0157 1431-2174 |
| DOI: | 10.1007/s10040-018-1740-3 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::c91f7c5087d06cccbc0eae424fa314a3 https://doi.org/10.1007/s10040-018-1740-3 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........c91f7c5087d06cccbc0eae424fa314a3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14350157 14312174 |
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| DOI: | 10.1007/s10040-018-1740-3 |