Book.
0000 - Gale Group | World Scholar Latin America
Gerhard Strauch, Jorge Oyarzún, Melitta Fiebig-Wittmaack, Edmundo González, Stephan M. Weise,
... groundwater in the arid Andean realm of the Elqui watershed. The results of 2H and18O analyses of ... watershed. The isotope signature of water of the Elqui river and its tributaries as well as that ... the more arid coastal area, north of the Elqui river, differ in their isotopic signature due to ... realm. Owing to the proximity of the lower Elqui river waters and its tributaries to the Pacific ... fog) sources. Generally, the main source of the Elqui river water is mainly attributed to surface runoff ...
Tópico(s): Groundwater and Watershed Analysis
2006 - Taylor & Francis | Isotopes in Environmental and Health Studies
Robert R. Hearne, Κ. William Easter,
... costs in Chile, four river valleys, the Maipo, Elqui, Limari, and the Azapa were selected as case studies.Transactions from the Elqui and Limari valleys, during the years 1986 to ... substantial economic gains-from-trade in both the Elqui and Limari Valleys.These economic gains produce rents ... individuals buying water for human consumption in the Elqui Valley received the highest rents.In the Elqui Valley net gains-from-trade per share were ... canal systems with fixed flow dividers in the Elqui and Maipo Valley there have been very few ...
Tópico(s): Water Governance and Infrastructure
1997 - Wiley | Agricultural Economics
Robert R. Hearne, Κ. William Easter,
... costs in Chile, four river valleys, the Maipo, Elqui, Limarí, and the Azapa were selected as case studies. Transactions from the Elqui and Limarí valleys, during the years 1986 to ... substantial economic gains‐from‐trade in both the Elqui and Limarí Valleys. These economic gains produce rents ... individuals buying water for human consumption in the Elqui Valley received the highest rents. In the Elqui Valley net gains‐from‐trade per share were ... canal systems with fixed flow dividers in the Elqui and Maipo Valley there have been very few ...
Tópico(s): Water Governance and Infrastructure
1997 - Wiley | Agricultural Economics
Samuel Guevara G, Jorge Oyarzún M, Hugo Maturana C,
... 1975-1995) de analisis de aguas del Rio Elqui y sus tributarios, realizados por la Direccion General ... y As de los rios Toro, Turbio y Elqui, que reciben el aporte directo (Rio Toro) o ... y Cu de los rios Toro, Turbio y Elqui, aunque los de As son progresivamente atenuados por ... en ese elemento. Por otra parte, el Rio Elqui ha recibido aportes significativos de Cu provenientes del ...
Tópico(s): Water Resource Management and Quality
2006 - Instituto de Investigaciones Agropecuarias, INIA | Agricultura Técnica
Jorge Oyarzún, Daniela Castillo, Hugo Maturana, Nicole Kretschmer, Guido Soto, Jaime M. Amézaga, Tobías S. Rötting, Paul L. Younger, Ricardo Oyarzún,
... ore deposits and mining operations exist in the Elqui river basin, Chile: (a) acid drainage from Andean ... sediments of the rivers and creeks of the Elqui basin, including a group of chemical elements and ... in the main channel and tributaries of the Elqui river reveals that both pollutant sources contribute to ... detrimental to the export-oriented agriculture of the Elqui basin. Consequently, remediation of that source should be ...
Tópico(s): Geochemistry and Geologic Mapping
2012 - Elsevier BV | Journal of Geochemical Exploration
Produção Nacional
Revisado por pares
Ana Elizabeth Cortés, Ricardo Oyarzún, Nicole Kretschmer, Henrique Marinho Leite Chaves, Guido Soto, M. Soto, Jaime M. Amézaga, Jorge Oyarzún, Tobías S. Rötting, Michelle Señoret, Hugo Maturana,
... particularly water resource management, was applied in the Elqui River Basin over a period of five years (2001)(2002)(2003)(2004)(2005).The Elqui watershed is located in a semiarid region of ... management.The application of the WSI in the Elqui basin demonstrated the practicality of the method, both ... term planning and management strategies, both in the Elqui basin and elsewhere.
Tópico(s): Water Resource Management and Quality
2012 - Catholic University of the Most Holy Conception | Obras y proyectos
Constantino Mpodozis, Suzanne Mahlburg Kay,
... The batholiths consist of the Carbonilerous-Lower Permian Elqui Superunit which records the final assembly of Gondwana, ... Gondwana margin from Peru to Australia. The oldest Elqui unit, Guanta, is composed of calc-alkaline tonalites ... melting of a thickened crust. All of the Elqui granitoids are mesozonal and show evidence of contemporaneous ... Regional considerations suggest that the uplift of the Elqui Superunit and the San Rafael Phase could have ...
Tópico(s): Geological and Tectonic Studies in Latin America
1990 - National Geology and Mining Service | Andean geology
Gerardo Acosta‐Jamett, Sarah Cleaveland, Andrew A. Cunningham, Mark Bronsvoort, Philip S. Craig,
... cases of CE in humans reported in the Elqui, Limarí and Choapa provinces in Coquimbo region for ... a significant downward one, except for swine in Elqui and sheep and swine in Choapa. Cattle showed higher prevalence of CE in liver in Elqui, in kidney in Limarí and in lungs in ... showed higher prevalence of CE in liver in Elqui and Limarí and lower prevalence in Choapa. Goats ...
Tópico(s): Parasitic Infections and Diagnostics
2009 - Elsevier BV | Veterinary Parasitology
Francisco J. Pérez, Sebastián Figueroa Rubio, Juan Ormeño-Núñez,
... L.) cv. Thompson Seedless (Sultana) grown in the Elqui (warm winter) and in the Maipo (temperate winter) ... maximum daily winter temperatures, ordinarily occurring in the Elqui valley, reduced the depth without affecting the length ... ED period in buds collected from the warmer Elqui valley in relation to those collected from the ... latent buds in subtropical areas such as the Elqui valley.
Tópico(s): Postharvest Quality and Shelf Life Management
2007 - CSIRO Publishing | Functional Plant Biology
Ricardo Oyarzún, Sergio Ribeiro Guevara, J. Oyarzún, Javier Lillo, Hugo Maturana, Pablo Higueras,
The Elqui watershed (northern Chile) constitutes a highly contaminated river system, with arsenic exceeding by up to three orders ... 33 (Turbio) and 0.11 mg l−1 (Elqui). These figures largely exceed the USEPA regulations for ... of the total As data from the river Elqui (and 70% from the river Turbio) are above ...
Tópico(s): Heavy metals in environment
2006 - Springer Science+Business Media | Environmental Geochemistry and Health
Francisco Balocchi, Roberto Pizarro, T. Meixner, Fernando Urbina,
... 2017). Annual and monthly runoff analysis in the Elqui River, Chile, a semi-arid snow-glacier fed ... 1970-2009) from four sub-basins of the Elqui River (29° 27'- 30° 34' S and 71° ... W), in the Coquimbo region of Chile. The Elqui basin has a rainsnow- glacial melt regime. The ...
Tópico(s): Climate change and permafrost
2017 - Mexican Institute of Water Technology | Tecnología y Ciencias del Agua
Gwendolynne Young, Humberto Zavala, Johanna Wandel, Barry Smit, Sonia Salas, Elizabeth Jiménez, Melitta Fiebig, Roxana Espinoza, Harry Diaz, Jorge Cepeda,
... an irrigation-dependent agricultural community located in the Elqui River Basin of Northern Chile to water and ... in this region with climate change; furthermore, the Elqui River is fed by snowmelt and glaciers, and ...
Tópico(s): Climate Change, Adaptation, Migration
2009 - Springer Science+Business Media | Climatic Change
Gonzalo Galleguillos, M Jorge Oyarzún, Hugo Maturana, Luis Oyarzun,
... la cabecera andina de la cuenca del rio Elqui, ilustra el efecto indirecto de un embalse de ... embalse, situado en el curso medio del rio Elqui y operativo desde el 2000, ha mostrado notable ...
Tópico(s): Mine drainage and remediation techniques
2008 - Mexican Institute of Water Technology | IMTA-TC
P Carlo Nasi, M Constantino Mpodozis, P Paula Cornejo, D Ramon Moscoso, J Victor Maksaev,
RESUMEN:El Batolito Elqui-Limari (BEL) constituye la porcion centro-occidental y meridional, de un macizo granitico de edad paleozoica superior-triasica, expuesto ... individuales, agrupados en dos asociaciones intrusivas mayores: Superunidad Elqui (SUE), de edad carbonifera y Superunidad Ingaguas (SUI), ...
Tópico(s): Geological and Geophysical Studies Worldwide
2010 - National Geology and Mining Service | Andean geology
Jaime Pizarro, Pablo M. Vergara, José Ángel Sigala Rodríguez, Alejandra M. Valenzuela,
... was assessed. Of all the rivers studied, the Elqui showed the highest historical mean concentrations of As, ... showed elevated concentrations of Cu and Mo. The Elqui and the Aconcagua were clustered as distinct groups ... heavy metal concentrations. As and Cu in the Elqui had positive annual slopes. Sulphate concentration exceeded 100 ...
Tópico(s): Geochemistry and Geologic Mapping
2010 - Elsevier BV | Journal of Hazardous Materials
Ricardo Oyarzún, J. Oyarzún, Javier Lillo, Hugo Maturana, Pablo Higueras,
... Panulcillo). An investigation of the other two anomalies (Elqui and Hurtado) reveals three major causes that fully ... here regarded as the sources of both the Elqui and Hurtado anomalies. The strong advanced argillic alteration ... oxidation–leaching of sulphides. This applies to the Elqui and Hurtado anomalies. Conversely, given that the potassic, ...
Tópico(s): Mine drainage and remediation techniques
2007 - Springer Nature | Environmental Geology
Ricardo Oyarzún, Javier Lillo, Pablo Higueras, J. Oyarzún, Hugo Maturana,
Sediments from the Elqui watershed river system (9800 km2; northern Chile) are highly enriched in arsenic. The river system initiates in the high ... brings intense rains, with catastrophic consequences in the Elqui watershed, including the massive removal of sediments in ...
Tópico(s): Heavy metals in environment
2004 - Elsevier BV | Journal of Geochemical Exploration
... has been documented in Northern Chile. However, the Elqui River, which provides water for ∼200 000 people ... enriched suspended solids settled only in the lower Elqui River. Arsenate did not adsorb to suspended solids ...
Tópico(s): Heavy Metal Exposure and Toxicity
2004 - Elsevier BV | The Science of The Total Environment
Luı́s Ribeiro, Nicole Kretschmer, João Nascimento, A. Buxo, Tobías S. Rötting, G. Soto, Michelle Señoret, J. Oyarzún, Hugo Maturana, Ricardo Oyarzún,
... shallow wells in the alluvial aquifers of the Elqui River basin in central Chile, an area characterized ... to a decrease of streamflow observed in the Elqui River. The streamflow is derived from mountain snowmelt ...
Tópico(s): Hydrological Forecasting Using AI
2014 - Taylor & Francis | Hydrological Sciences Journal
Jonathan Pourrier, Hervé Jourde, Christophe Kinnard, Simon Gascoin, Sébastien Monnier,
The Tapado catchment is located in the upper Elqui river basin (4000–5550 m) in northern Chile. ... to the lower semi-arid areas of the Elqui river basin. To improve our knowledge of the ... in supplying water to lower areas of the Elqui river basin. Water production from, and transfer through, ...
Tópico(s): Landslides and related hazards
2014 - Elsevier BV | Journal of Hydrology
Jorge Oyarzún, María José Carvajal, Hugo Maturana, Jorge Núñez, Nicole Kretschmer, Jaime M. Amézaga, Tobías S. Rötting, Gerhard Strauch, Geoffrey Thyne, Ricardo Oyarzún,
... geochemistry of surface water and groundwater from the Elqui River basin, North-Central Chile, was studied in ... results, the chemical and isotopic composition of the Elqui basin surface water and groundwater is related to ...
Tópico(s): Water Quality and Pollution Assessment
2013 - Elsevier BV | Applied Geochemistry
Mauricio E. Flores, Jorge Núñez, Jorge Oyarzún, Gustavo Freixas, Hugo Maturana, Ricardo Oyarzún,
... and As) in the upper area of the Elqui River basin in North‐Central Chile. A correlation ... Andean region, and in particular for the upper Elqui zone, an estimation of the possible effects of ... or diluting contaminants in the waters of the Elqui River. Finally, it should be noted that this ...
Tópico(s): Soil and Water Nutrient Dynamics
2016 - Wiley | Hydrological Processes
Justin D. Delorit, Edmundo Cristian Gonzalez Ortuya, Paul Block,
... water supplies. Such is the case in the Elqui River valley of northern Chile, which draws on ... and timing responsible for moisture transport to the Elqui Valley and provide a unique application of streamflow ...
Tópico(s): Water resources management and optimization
2017 - Copernicus Publications | Hydrology and earth system sciences
Lucía Scaff, José A. Rutllant, David A. Rahn, Simon Gascoin, Roberto Rondanelli,
... magnitude and even sign. Precipitation measurements from the Elqui Valley in the semiarid Andes of Chile (30° ... edge of a surface migratory cyclone reaches the Elqui Valley in such a way that significant rainfall ...
Tópico(s): Cryospheric studies and observations
2017 - American Meteorological Society | Journal of Hydrometeorology
Jorge Oyarzún, Jorge Núñez, Hugo Maturana, Ricardo Oyarzún,
... Effects Over the Water Quality of the Upper Elqui Basin Jorge Oyarzún; Jorge Oyarzún Departamento Ingeniería de ... Effects Over the Water Quality of the Upper Elqui Basin. Environmental & Engineering Geoscience 2018;; 24 (3): 349– ... SocietyEnvironmental & Engineering Geoscience Search Advanced Search In the Elqui Basin, volcano-sedimentary and plutonic rocks of calc- ... sub-basins: those of the Turbio, Claro and Elqui rivers (Bodini and Araya, 1998). The Turbio River ... El Indio District, at the head of the Elqui watershed (Figure 1). El Indio is a mining ...
Tópico(s): Groundwater and Isotope Geochemistry
2018 - Geological Society of America | Environmental and Engineering Geoscience
Jaime Pizarro‐Araya, Jorge Cepeda-Pizarro, Juan E Barriga, Andrés Bodini,
Biological vulnerability in the Elqui Valley (Coquimbo Region, Chile) to economically important arthropods
Tópico(s): Forest Insect Ecology and Management
2009 - Pontifical Catholic University of Chile | Ciencia e investigación agraria
Constantino Mpodozis, Suzanne Mahlburg Kay,
... Permian is a period of oblique convergence. Associated Elqui complex granitoids are diverse. Those in the Guanta ... foreland basinal sedimentary rocks and uplift of the Elqui complex. Subsequent gravitational collapse of the inactive slab ...
Tópico(s): Geological formations and processes
1992 - Geological Society of America | Geological Society of America Bulletin
Roberto Oyarzun, Javier Lillo, Jorge Oyarzún, Pablo Higueras, Hugo Maturana,
... northern Chile), and include information from the neighboring Elqui Basin for a combined analysis. Given that the ... thus contributing to major metal dispersion in the Elqui and Limarí fluvial systems.
Tópico(s): Arsenic contamination and mitigation
2006 - Taylor & Francis | International Geology Review
Cristóbal Juliá, David A. Rahn, José A. Rutllant,
... was recorded daily at three stations along the Elqui Valley. The relationship between the MJO and precipitation ... MJOI increases the likelihood of precipitation in the Elqui Valley, false alarms remain problematic.
Tópico(s): Meteorological Phenomena and Simulations
2012 - American Meteorological Society | Journal of Climate