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Journal articles on the topic 'Cordillera de los Andes, Chile'

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Published: 4 June 2021

Last updated: 6 February 2022

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1

Barrett, Bradford S., RenéD Garreaud, and Mark Falvey. "Effect of the Andes Cordillera on Precipitation from a Midlatitude Cold Front." Monthly Weather Review 137, no. 9 (2009): 3092–109. http://dx.doi.org/10.1175/2009mwr2881.1.

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Abstract The effects of the Andes Cordillera, the major mountain range in South America, on precipitation patterns of baroclinic systems approaching from the southeast Pacific remain largely unstudied. This study focuses on a case in late May 2008 when an upper-level trough and surface cold front produced widespread precipitation in central Chile. The primary goal was to analyze the physical mechanisms responsible for the structure and evolution of the precipitation. Weather Research and Forecasting (WRF) model simulations indicate that as an upper-level trough approached central Chile, midtro

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2

WILSON, RYAN, SEBASTIAN H. MERNILD, JEPPE K. MALMROS, CLAUDIO BRAVO, and DANIELA CARRIÓN. "Surface velocity fluctuations for Glaciar Universidad, central Chile, between 1967 and 2015." Journal of Glaciology 62, no. 235 (2016): 847–60. http://dx.doi.org/10.1017/jog.2016.73.

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ABSTRACTFor the Andes Cordillera, where observed mass-balance records are sparse, long-term glacier velocity measurements potentially represent a useful tool for assessing glacier health. Utilising manual and automatic feature-tracking techniques applied to Corona, Landsat and ASTER satellite imagery, this paper presents surface velocity fluctuations for Glaciar Universidad between 1967 and 1969, and 1985 and 2015, the longest such time series available for the Andes Cordillera, outside Patagonia. This time series reveals an increase in the surface velocities of the main glacier trunk between

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3

Sarricolea, Pablo, Mariajosé Herrera Ossandon, and Cristóbal Araya Escobar. "Análisis de la concentración diaria de las precipitaciones en Chile central y su relación con la componente zonal (subtropicalidad) y meridiana (orográfica)." Investigaciones Geográficas, no. 45 (August 21, 2013): 37. http://dx.doi.org/10.5354/0719-5370.2013.27595.

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Este artículo analiza la distribución espacial y temporal de la irregularidad de las precipitaciones diarias en una franja zonal de la región central de Chile (32°50’S-34°12’S), mediante el índice de concentración (CI). En total se calculó el CI para un total de 16 estaciones meteorológicas, en el período 1965-2010. El propósito fue generar una regionalización climática basada en un índice diario que mide la irregularidad de las precipitaciones. Teóricamente, se han ensayado dos hipótesis:la primera propone que el CI disminuye de Norte-Sur, asociado a la componente Subtropicalidad; la segunda

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Hall, B. L., G. Denton, T. Lowell, G. R. M. Bromley, and A. E. Putnam. "Retreat of the Cordillera Darwin icefield during Termination I." Cuadernos de Investigación Geográfica 43, no. 2 (2017): 751. http://dx.doi.org/10.18172/cig.3158.

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During the last glaciation, the Cordillera Darwin icefield expanded northward toward the Straits of Magellan, eastward across Isla Grande de Tierra del Fuego and through Canal Beagle, and south and west across the numerous islands of southernmost Chile. Deglaciation commenced at ~18 ka during Termination I. Alpine glaciers in the Fuegian Andes also likely retreated at that time. Radiocarbon ages from the interior regions of Cordillera Darwin suggest ice in at least some locations had retreated close to its present-day limit as early as ~16.5 ka. The most likely cause for such rapid ice retreat

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Bonilla Rivera, Pablo Enrique. "Investigación fitoquímica, farmacológica y de toxicidad DL₅₀ de Ephedra Americana Pinco-Pinco." Ciencia e Investigación 2, no. 1 (1999): 27–43. http://dx.doi.org/10.15381/ci.v2i1.4404.

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Una yerba que crece a lo largo de la Cordillera de los Andes, denominada por los nativos Pinco-Pinco, y de amplio uso medicinal en la zona andina del Perú, en la altiplanicie de Bolivia y a lo largo de la cordillera andina de Argentina y Chile, cuyo nombre científico es Ephedra americana, es especie vegetal objeto de la presente investigación.En nuestro país esta especie crece abundantemente en el departamento de Arequipa, en el balneario de Jesús, en el camino a la Laguna de Salinas en faldas del nevado Pichu-Pichu.También crece en forma abundante en el Cusco. La muestra vegetal del presente

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6

Lamb, Simon. "Cenozoic uplift of the Central Andes in northern Chile and Bolivia—reconciling paleoaltimetry with the geological evolution." Canadian Journal of Earth Sciences 53, no. 11 (2016): 1227–45. http://dx.doi.org/10.1139/cjes-2015-0071.

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The Cenozoic geological evolution of the Central Andes, along two transects between ∼17.5°S and 21°S, is compared with paleo-topography, determined from published paleo-altimetry studies. Surface and rock uplift are quantified using simple 2-D models of crustal shortening and thickening, together with estimates of sedimentation, erosion, and magmatic addition. Prior to ∼25 Ma, during a phase of amagmatic flat-slab subduction, thick-skinned crustal shortening and thickening (nominal age of initiation ∼40 Ma) was focused in the Eastern and Western Cordilleras, separated by a broad basin up to 30

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7

A. Drake, Lawrence, and Estela Minaya Ramos. "The propagation of Love and Rayleigh waves in the Andean Region." Geofísica Internacional 35, no. 3 (1996): 273–84. http://dx.doi.org/10.22201/igeof.00167169p.1996.35.3.462.

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El patrón distintivo desde la fuente sísmica de un campo irradiado de ondas sísmicas se modifica profundamente al pasar por una región irregular como la Cordillera de los Andes de América del Sur. La onda Lg guiada por la corteza útil en la discriminación de fuentes sísmicas, pero, aun para una sola fuente, las amplitudes de ondas de periódo corto como Lg pueden variar significativamente. La Cordillera de los Andes de Bolivia forma una parte de la cadea de los Andes, que se originó en los dos principales ciclos orogénicos del Fanerozoico, un Ciclo Preandino Precámbrico-Paleozoico Superior y el

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8

Laborías, Alexis Rodrigo. "La controversia por el vertedero de residuos en la Cordillera de los Andes. Un estudio de caso acerca de la responsabilidad internacional por daño transfronterizo." Anuario Mexicano de Derecho Internacional 1, no. 21 (2021): 565. http://dx.doi.org/10.22201/iij.24487872e.2021.21.15603.

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El artículo analiza la controversia entre Argentina y Chile, con motivo del descubrimiento de un vertedero de residuos en la Cordillera de los Andes, originado por la actividad de una empresa minera chilena, que arrojaba el material en desuso en el territorio argentino. El conflicto es estudiado a la luz de las reglas en materia de responsabilidad internacional y teniendo en cuenta los mecanismos de solución de disputas a los que recurren los Estados ante un hecho de contaminación transfronteriza.

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9

Mernild, Sebastian H., Glen E. Liston, Christopher A. Hiemstra, Jacob C. Yde, James McPhee, and Jeppe K. Malmros. "The Andes Cordillera. Part II: Rio Olivares Basin snow conditions (1979-2014), central Chile." International Journal of Climatology 37, no. 4 (2016): 1699–715. http://dx.doi.org/10.1002/joc.4828.

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Ward, D., R. Thornton, and J. Cesta. "Across the Arid Diagonal: deglaciation of the western Andean Cordillera in southwest Bolivia and northern Chile." Cuadernos de Investigación Geográfica 43, no. 2 (2017): 667. http://dx.doi.org/10.18172/cig.3209.

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Here we review published cosmogenic records of glaciation and deglaciation from the western cordillera of the arid subtropical Andes of northern Chile and southwest Bolivia. Specifically, we examine seven published studies describing exposure ages from moraines and glaciated bedrock spanning the glaciological Arid Diagonal, the region of the dry Andes where there is no clear evidence for glaciation over at least the last global glaciation. We also present new cosmogenic 36Cl exposure ages from two previously undated sets of moraines in the deglaciated region near 22ºS. Taken together, these re

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Vargas, Ximena. "Corrientes de detritos en la quebrada de Macul, Chile. Estudio de caudales máximos." Ingeniería del agua 6, no. 4 (1999): 341. http://dx.doi.org/10.4995/ia.1999.2798.

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Se analiza la ocurrencia de corrientes de detritos en una cuenca andina en la que no se dispone de información fluviométrica y que se desarrolla en los primeros contrafuertes de la Cordillera de Los Andes, en una zona cercana a la ciudad de Santiago, Chile. Se estiman los caudales líquidos asociados a los mayores eventos históricos que de acuerdo a la literatura pueden clasificarse como flujos de barro o de detritos y se analiza la forma tradicional de determinación de caudales de diseño en cuencas pluvionivales. Dada la incidencia que estos eventos tienen sobre la población de zonas aledañas

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Sanhueza Díaz, Lilian, Marisol Chávez Herting, María Teresa Douzet Carafi, and Milton Smythe Bendel. "Araucanía – Comahue: un espacio transnacional de migración en Chile y Argentina." REVISTA CUHSO 29, no. 1 (2019): 59–79. http://dx.doi.org/10.7770/cuhso.v29i1.1898.

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Este artículo expone las características de la migración transfronteriza en el territorio Araucanía–Comahue, ubicado en la frontera sur de Chile y Argentina. Hoy en día es conocido como corredor, denominación dada en el marco de políticas de desarrollo impulsadas por los Estados-nación a espacios marginales anexados tardíamente al territorio nacional. Pero cabe destacar que ya en el siglo XVII, este espacio comunicaba y vinculaba a los habitantes del Wallmapu de cada lado de la cordillera de los Andes. Así, el objetivo es describir la movilidad humana indígena documentada por la historiografía

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13

Hallam, A., L. Biró-Bagóczky, and E. Perez. "Facies analysis of the Lo Valdés Formation (Tithonian–Hauterivian) of the High Cordillera of central Chile, and the palaeogeographic evolution of the Andean Basin." Geological Magazine 123, no. 4 (1986): 425–35. http://dx.doi.org/10.1017/s0016756800033513.

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AbstractFacies descriptions and environmental interpretations are given for outstanding sections of marine Tithonian to Hauterivian strata in the High Cordillera of the central Chilean Andes. Comparisons are made with correlative strata in other regions in Chile, and with the Neuquén Basin of west central Argentina. The rich and partly endemic bivalve fauna, which has strong African affinities, shows no change up the stratigrapic sequence that cannot be related to local facies. Water depth is recognized as the main variable controlling the distribution of the bivalve and ammonite faunas. Utili

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14

Pérez, Alberto Enrique. "La mirada de Ngenechen. Representaciones anfibiomorfas aplicadas al pastillaje en la alfarería de la Patagonia Noroccidental Argentina." Comechingonia. Revista de Arqueología 13, no. 1 (2010): 9–20. http://dx.doi.org/10.37603/2250.7728.v13.n1.17882.

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Nuevos hallazgos de alfarería prehispánica en la localidad de San Martín de los Andes, departamento Lácar, provincia de Neuquén, muestran la presencia de atributos decorativos zoomorfos abstractos o anfibiomorfos (ranas) estilizados en proximidad de ambientes fluviales. Estos atributos modelados fueron caracterizados históricamente como “mamelones”, en referencia a atributos sexuales femeninos y símbolos de fertilidad. Sin embargo, este tipo de decoración modelada, muy bien conocida en el territorio Centro Sur de Chile en la alfarería pre y post hispánica, se presenta como la gradual abstracci

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15

CRUZ, JUAN LUIS OSSA SANTA. "The Army of the Andes: Chilean and Rioplatense Politics in an Age of Military Organisation, 1814–1817." Journal of Latin American Studies 46, no. 1 (2014): 29–58. http://dx.doi.org/10.1017/s0022216x13001570.

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AbstractThis article analyses the organisation of the Army of the Andes, created in Mendoza between 1814 and 1817 with the aim of reconquering Chile from the royalists. The first section studies the role of José de San Martín as an informal arbiter in Bernardo O'Higgins’ dispute with José Miguel Carrera. The aim is to explain why San Martín decided to support O'Higgins, and the immediate consequences of this alliance. The second section addresses the main characteristics of the Army of the Andes and the process of militarisation experienced by the local inhabitants. Everyday life in Mendoza be

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Luebert, Federico, and Patricio Pliscoff. "Variabilidad climática y bioclimas de la Región de Valparaíso, Chile." Investigaciones Geográficas, no. 44 (January 1, 2012): 41. http://dx.doi.org/10.5354/0719-5370.2012.26408.

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La Región de Valparaíso en su área continental se encuentra bajo la influencia de un clima mediterráneo.El análisis de datos de estaciones meteorológicas y de superficies climáticas, sugiere que la altitud yla posición topográfica respecto a la Cordillera de los Andes y de la Costa determinan la variacióndel clima al interior de la región. Proyecciones de cambio climático en el área continental de laRegión indican, en general, una tendencia al aumento de las temperaturas y a una disminución delas precipitaciones. Basándose en análisis de conglomerados, cinco bioclimas pueden reconocersedentro

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Chandia-Jaure, Rosa. "Los espacios hidráulicos en un paisaje andino. Un modelo técnico de adaptación local." Bitácora Urbano Territorial 27, no. 3 (2017): 51–60. http://dx.doi.org/10.15446/bitacora.v27n3.53651.

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La investigación estudia el conjunto de conocimientos técnicos locales asociados a las trazas de agua existentes en un asentamiento de la cordillera de Los Andes representativo del paisaje cultural andino. A través del análisis de Socoroma, en el norte de Chile, se exponen las estrategias tecnológicas locales para el uso equilibrado del caudal del agua disponible, frente a eventos de escasez o excesos del recurso, mientras sirven de soporte a un sistema social y cultural que da forma a un habitar íntimamente vinculado al entorno. El análisis de estos espacios hidráulicos permite compre

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18

Alloatti, Norma. "Mis impresiones y mis vicisitudes en mi viaje a Europa pasando por el Estrecho de Magallanes y en mi excursión a Buenos Aires pasando por la cordillera de Los Andes." La Manzana de la Discordia 9, no. 2 (2016): 115. http://dx.doi.org/10.25100/lamanzanadeladiscordia.v9i2.1609.

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De la Barra, Maipina (2013)Mis impresiones y mis vicisitudes en mi viaje a Europa pasando por el Estrecho de Magallanes y en mi excursión a Buenos Aires pasando por la cordillera de Los AndesReedición crítica del original publicado en 1878 a cargo de Carla Ulloa Inostroza (Transcripción, actualización ortográfica y estudio preliminar).Santiago, Chile, Editorial Cuarto Propio, diciembre 2013, 224 páginas,ISBN. 978-956-260-663-9.

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Margirier, A., L. Audin, J. Carcaillet, S. Schwartz, and C. Benavente. "Tectonic and climatic controls on the Chuquibamba landslide (western Andes, southern Peru)." Earth Surface Dynamics 3, no. 2 (2015): 281–89. http://dx.doi.org/10.5194/esurf-3-281-2015.

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Abstract. The contribution of landslides to the Quaternary evolution of relief is poorly documented in arid contexts. In southern Peru and northern Chile, several massive landslides disrupt the arid western Andean front. The Chuquibamba landslide, located in southern Peru, belongs to this set of large landslides. In this area, the Incapuquio fault system captures the intermittent drainage network and localizes rotational landslides. Seismic activity is significant in this region with recurrent Mw 9 subduction earthquakes; however, none of the latest seismic events have triggered a major landsl

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Obregón Iturra, Jimena. "“Indios en collera”, deportaciones coloniales de trabajadores Huarpes y Aucaes. Razón de Estado e intereses particulares. Chile, 1598-1658." Tiempo Histórico, no. 16 (July 16, 2019): 15–38. http://dx.doi.org/10.25074/th.v0i16.1207.

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El análisis caracteriza los desplazamientos bajo apremio a los que fueron sometidos, en la primera mitad del siglo XVII, miembros de dos pueblos originarios que se encontraban en situaciones distintas ante el poder colonial español. Los huarpes eran indios de encomienda, deportados en colleras por vía terrestre desde Cuyo hacia Santiago, a través de la cordillera de los Andes. Por su parte, los araucano-mapuches llamados aucaes, eran esclavos de guerra que, también atados en colleras, fueron transportados en navíos hacia Lima/El Callao. El artículo indaga las condiciones materiales de los tras

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Iroumé, Andrés, and Maritza Schäfer. "VARIABILIDAD ESPACIAL Y TEMPORAL DE LA INFILTRACIÓN EN UNA CUENCA EXPERIMENTAL EN LA CORDILLERA DE LOS ANDES, IX REGIÓN, CHILE." Agro Sur 28, no. 2 (2000): 1–9. http://dx.doi.org/10.4206/agrosur.2000.v28n2-01.

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Breitkreuz, Christoph, Shanaka L. de Silva, Hans G. Wilke, Jörg A. Pfänder, and Axel D. Renno. "Neogene to Quaternary ash deposits in the Coastal Cordillera in northern Chile: Distal ashes from supereruptions in the Central Andes." Journal of Volcanology and Geothermal Research 269 (January 2014): 68–82. http://dx.doi.org/10.1016/j.jvolgeores.2013.11.001.

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23

Melnick, Daniel, François Charlet, Helmut P. Echtler, and Marc De Batist. "Incipient axial collapse of the Main Cordillera and strain partitioning gradient between the central and Patagonian Andes, Lago Laja, Chile." Tectonics 25, no. 5 (2006): n/a. http://dx.doi.org/10.1029/2005tc001918.

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Calderón Sánchez, Sergio. "Respuesta del Eucalyptus globulus ssp. globulus a fertilizaciones de apoyo en la VIII Región." Ciencia & Investigación Forestal 5, no. 1 (1991): 5–21. http://dx.doi.org/10.52904/0718-4646.1991.144.

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En las zonas húmedas templadas costeras de la provincia de Concepción y húmedas de la Cordillera de Los Andes en la provincia de Bio-Bio, Chile, se probaron diversas combinaciones de fertilizantes, aplicadas en dosis subdivididas dentro de los tres primeros años de edad en plantaciones de Eucalyptus globulus ssp. globulus. Los resultados indican que en el ensayo de la zona costera de la provincia de Concepción las aplicaciones de urea producen la mejor respuesta, tanto en términos de producción física como económica, mostrando una rentabilidad superior al 12% En el ensayo de la zona precordill

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Bandierie, Susana O. "La Cordillera de los Andes en el norte de Patagonia o la frontera argentino-chilena como espacio social. Un estudio de caso." Estudios Fronterizos, no. 22 (May 1, 1990): 81–108. http://dx.doi.org/10.21670/ref.1990.22.a04.

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En este trabajo se muestra la permanencia de las relaciones socioeconómicas y culturales en la región fronteriza del Neuquén, que se ubica entre Chile y Argentina; en donde la imposición de límites jurídico-administrativos no afectó su funcionamiento ni la expresión territorial de la ganadería extensiva como actividad dominante. La descomposición de esta región se presentó a partir de 1930, con la fijación de una frontera comercial que provocó una crisis generalizada en la actividad ganadera. Esto trajo como consecuencia el incremento de su marginalidad socioeconómica y un proceso de despoblam

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Blanco, Graciela. "Las sociedades anónimas cruzan los Andes: los inversores chilenos en Neuquén al comenzar el siglo XX." América Latina en la Historia Económica 19, no. 2 (2012): 107. http://dx.doi.org/10.18232/alhe.v19i2.519.

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<p><span style="font-family: Times New Roman; font-size: small;"> </span><span style="font-size: small;"><span style="font-family: Times New Roman;">El territorio de Neuquén, en el norte de la Patagonia, atrajo la mirada de diversos inversores privados a partir del avance militar que realizó el Estado nacional sobre los grupos indígenas y de la conquista de las tierras del sur argentino; tierras que fueron ofrecidas a particulares en propiedad o arrendamiento en condiciones muy beneficiosas. Este trabajo analiza la conformación en Chile, en los primeros años del s

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Miranda, María José. "The genus Bostryx in central western Argentina: anatomical and distributional description of four of its southernmost species (Gastropoda, Bulimulidae)." Iheringia. Série Zoologia 105, no. 4 (2015): 484–98. http://dx.doi.org/10.1590/1678-476620151054484498.

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ABSTRACT The genus Bostryx Troschel, 1847 is endemic to South America, extending from Ecuador to Chile and Argentina. The southernmost Argentinian species of the genus that inhabit San Luis, San Juan and Mendoza provinces, specially the pre-Andes, Andes and Sierras Pampeanas mountain ranges, were examined. This is the first time the anatomy of Bostryx pastorei (Holmberg, 1912), Bostryx reedi (Parodiz, 1947) and Bostryx strobeli (Parodiz, 1956) has been described.Bostryx cordillerae (Strobel, 1874) is re-described regarding shell and anatomy due to new morphological data. The main differences a

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Maza, S. N., G. Collo, D. Morata, et al. "Clay mineral associations in the clay cap from the Cerro Pabellón blind geothermal system, Andean Cordillera, Northern Chile." Clay Minerals 53, no. 2 (2018): 117–41. http://dx.doi.org/10.1180/clm.2018.9.

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ABSTRACTThe occurrence of smectite-illite and smectite-chlorite minerals series was studied along a thick clay cap (~300 m) drilled in the Cerro Pabellón geothermal field (northern Andes, Chile). X-ray diffraction (XRD) and scanning electronic microscopy (SEM) were used to characterize the alteration mineralogy and clay mineral assemblages and their changes with depth. Cerro Pabellón is a high-enthalpy blind geothermal system, with a reservoir zone from ~500 m to 2000 m depth, with temperatures of 200–250°C. Three main hydrothermal alteration zones were identified: (1) argillic; (2) sub-propyl

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Vargas Easton, Gabriel, Jorge Inzulza Contardo, Sonia Pérez Tello, Daniela Ejsmentewicz Cáceres, and Catalina Jiménez Yáñez. "¿Urbanización fallada? La Falla San Ramón como nuevo escenario de riesgo sísmico y la sostenibilidad de Santiago, Chile." Revista de Urbanismo, no. 38 (June 30, 2018): 1. http://dx.doi.org/10.5354/0717-5051.2018.48216.

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Santiago de Chile, habitada por cerca de 7 millones de personas, se ubica a los pies del flanco occidental de la Cordillera Principal de Los Andes, uno de los cordones montañosos más activos de nuestro planeta. La zona oriente de Santiago ha experimentado una expansión urbana sin precedentes en las últimas cuatro décadas, generando un aumento de la exposición de sus habitantes a riesgos socio-naturales de origen geológico, entre ellos la posibilidad de terremotos corticales asociados a la Falla San Ramón. El presente trabajo explora este nuevo escenario de amenaza sísmica, utilizando cartograf

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Masiokas, Mariano H., Ricardo Villalba, Brian H. Luckman, Carlos Le Quesne, and Juan Carlos Aravena. "Snowpack Variations in the Central Andes of Argentina and Chile, 1951–2005: Large-Scale Atmospheric Influences and Implications for Water Resources in the Region." Journal of Climate 19, no. 24 (2006): 6334–52. http://dx.doi.org/10.1175/jcli3969.1.

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Abstract The snowpack in the central Andes (30°–37°S) is the primary source for streamflow in central Chile and central-western Argentina, but few published studies are available on snowpack variability in the region. This paper develops the first regional snowpack series (1951–2005) from Chilean and Argentinean snow course records. This series shows a strong regional signal, marked interannual variability, and a positive, though nonsignificant, linear trend. Correlations with local precipitation and temperature records reveal a marked association with conditions in central Chile. High snow ac

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Richter, M. "To what extent do natural disturbances contribute to Andean plant diversity? A theoretical outline from the wettest and driest parts of the tropical Andes." Advances in Geosciences 22 (October 13, 2009): 95–105. http://dx.doi.org/10.5194/adgeo-22-95-2009.

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Abstract. This paper deals with natural disturbances and their impact on vascular plant enrichment at two climatically contrasting Andean ranges, i.e. the perhumid Cordillera Real in southern Ecuador and the arid Cordillera de Atacama in northern Chile. In the first case, main triggers for an additional input of pioneer species during succession stages initiated by perturbations are landslides, mudflows, and, to a lesser extent, cohort mortality, floods, and wildlife damages. Droughts and wind are stressors, which reduce plant growth but hardly plant diversity, in contrast to enhanced UV radia

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Cornwell, E., N. P. Molotch, and J. McPhee. "Spatio-temporal variability of snow water equivalent in the extra-tropical Andes Cordillera from distributed energy balance modeling and remotely sensed snow cover." Hydrology and Earth System Sciences 20, no. 1 (2016): 411–30. http://dx.doi.org/10.5194/hess-20-411-2016.

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Abstract. Seasonal snow cover is the primary water source for human use and ecosystems along the extratropical Andes Cordillera. Despite its importance, relatively little research has been devoted to understanding the properties, distribution and variability of this natural resource. This research provides high-resolution (500 m), daily distributed estimates of end-of-winter and spring snow water equivalent over a 152 000 km2 domain that includes the mountainous reaches of central Chile and Argentina. Remotely sensed fractional snow-covered area and other relevant forcings are combined with ex

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Ferrando, Francisco. "Sobre la distribución de Glaciares Rocosos en Chile, análisis de la situación y reconocimiento de nuevas localizaciones." Investigaciones Geográficas, no. 54 (December 29, 2017): 127. http://dx.doi.org/10.5354/0719-5370.2017.48045.

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La existencia de glaciares rocosos en diversas regiones de Chile ha sido indistintamente reconocida por algunos inventarios y no considerada por otros. Estudios particulares han revelado desde mediados del siglo XX su presencia en diferentes lugares del país. Pero, tanto estos como los inventarios distan aun de expresar la real extensión areal de su distribución así como de sus características o del volumen de recurso hídrico que representan. Por tanto, el objetivo de esta contribución es aportar al conocimiento de la real distribución de los glaciares rocosos en Chile. Con este fin se r

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Dott, Robert H., and Ian W. D. Dalziel. "Darwin the geologist in southern South America." Earth Sciences History 35, no. 2 (2016): 303–45. http://dx.doi.org/10.17704/1944-6178-35.2.303.

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Charles Darwin was a reputable geologist before he achieved biological fame. Most of his geological research was accomplished in southern South America during the voyage of H.M.S. Beagle (1831–1836). Afterward he published four books and several articles about geology and coral atolls and became active in the Geological Society of London. We have followed Darwin's footsteps during our own researches and have been very impressed with his keen observations and inferences. He made some mistakes, however, such as appealing to iceberg rafting to explain erratic boulders and to inundations of the se

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Herrera, Sebastian, Luisa Pinto, Katja Deckart, Javier Cortés, and Javier Valenzuela. "Cenozoic tectonostratigraphic evolution and architecture of the Central Andes in northern Chile based on the Aquine region, Western Cordillera (19°-19º30’ S)." Andean Geology 44, no. 2 (2017): 87. http://dx.doi.org/10.5027/andgeov44n2-a01.

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Martínez, F., A. Maksymowicz, H. Ochoa, and D. Díaz. "Geometry of the inverted Cretaceous Chañarcillo Basin based on 2-D gravity and field data – an approach to the structure of the western Central Andes of northern Chile." Solid Earth 6, no. 4 (2015): 1259–76. http://dx.doi.org/10.5194/se-6-1259-2015.

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Abstract. This paper discusses an integrated approach that provides new ideas about the structural geometry of the NNE-striking, Cretaceous Chañarcillo Basin located along the eastern Coastal Cordillera in the western Central Andes of northern Chile (27–28° S). The results obtained from the integration of two transverse (E–W) gravity profiles with previous geological information show that the architecture of this basin is defined by a large NNE–SSE-trending and east-vergent anticline ("Tierra Amarilla Anticlinorium"), which is related to the positive reactivation of a former Cretaceous normal

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Martínez, F., A. Maksymowicz, H. Ochoa, and D. Díaz. "Geometry of the inverted Cretaceous Chañarcillo Basin based on 2-D gravity and field data. An approach to the structure of the western Central Andes of northern Chile." Solid Earth Discussions 7, no. 3 (2015): 2311–46. http://dx.doi.org/10.5194/sed-7-2311-2015.

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Abstract. This paper discusses an integrated approach that provides new ideas about the structural geometry of the NNE-striking, Cretaceous Chañarcillo Basin located along the eastern Coastal Cordillera in the western Central Andes of northern Chile (27–28° S). The results obtained from the integration of two transverse (E–W) gravity profiles with previous geological information, show that the architecture of this basin is defined by a large NNE–SSE-trending and east-vergent anticline ("Tierra Amarilla Anticlinorium"), which is related to the positive reactivation of a former Cretaceous normal

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Lapere, Rémy, Sylvain Mailler, and Laurent Menut. "The 2017 Mega-Fires in Central Chile: Impacts on Regional Atmospheric Composition and Meteorology Assessed from Satellite Data and Chemistry-Transport Modeling." Atmosphere 12, no. 3 (2021): 344. http://dx.doi.org/10.3390/atmos12030344.

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In January 2017, historic forest fires occurred in south-central Chile. Although their causes and consequences on health and ecosystems were studied, little is known about their atmospheric effects. Based on chemistry-transport modeling with WRF-CHIMERE, the impact of the 2017 Chilean mega-fires on regional atmospheric composition, and the associated meteorological feedback, are investigated. Fire emissions are found to increase pollutants surface concentration in the capital city, Santiago, by +150% (+30 µg/m3) for PM2.5 and +50% (+200 ppb) for CO on average during the event. Satellite observ

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Cornwell, E., N. P. Molotch, and J. McPhee. "Spatio-temporal variability of snow water equivalent in the extra-tropical Andes cordillera from a distributed energy balance modeling and remotely sensed snow cover." Hydrology and Earth System Sciences Discussions 12, no. 9 (2015): 8927–76. http://dx.doi.org/10.5194/hessd-12-8927-2015.

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Abstract. Seasonal snow cover is the primary water resource precursor for human use and environmental sustain along the extratropical Andes Cordillera. Despite its importance, relatively little research has been devoted to understanding the properties, distribution and variability of this natural resource. This research provides high-resolution distributed estimates of end-of-winter and spring snow water equivalent over a 152 000 km2 domain that includes the mountainous reaches of central Chile and Argentina. Remotely sensed fractional snow covered area and other relevant forcings are combined

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Rojas, Maisa. "Multiply Nested Regional Climate Simulation for Southern South America: Sensitivity to Model Resolution." Monthly Weather Review 134, no. 8 (2006): 2208–23. http://dx.doi.org/10.1175/mwr3167.1.

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Abstract Results are reported from two 5-month-long simulations for southern South America using the fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5). The periods of simulation correspond to May–September 1997 and 1998, which were anomalously wet and dry winters for central Chile, respectively. The model setup includes triply nested, two-way-interacting domains centered over the eastern South Pacific and the western coast of southern South America, with horizontal grid intervals of 135, 45, and 15 km. Boundary conditions are provided from NCEP–NCAR reanalyzed fields. T

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Lapere, Rémy, Laurent Menut, Sylvain Mailler, and Nicolás Huneeus. "Seasonal variation in atmospheric pollutants transport in central Chile: dynamics and consequences." Atmospheric Chemistry and Physics 21, no. 8 (2021): 6431–54. http://dx.doi.org/10.5194/acp-21-6431-2021.

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Abstract. Central Chile faces atmospheric pollution issues all year long as a result of elevated concentrations of fine particulate matter during the cold months and tropospheric ozone during the warm season. In addition to public health issues, environmental problems regarding vegetation growth and water supply, as well as meteorological feedback, are at stake. Sharp spatial gradients in regional emissions, along with a complex geographical situation, make for variable and heterogeneous dynamics in the localization and long-range transport of pollutants, with seasonal differences. Based on ch

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Charrier, Reynaldo, Lasafam Iturrizaga, Sébastien Carretier, and Vincent Regard. "Geomorphologic and Glacial Evolution of the Cachapoal and southern Maipo catchments in the Andean Principal Cordillera, Central Chile (34°-35º S)." Andean Geology 46, no. 2 (2019): 240. http://dx.doi.org/10.5027/andgeov46n2-3108.

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We present here a reconstruction of the post late Miocene landscape evolution of the western slope of the Andean Cordillera Principal near 34°20’ S. We base our analysis on the available geological information, a morphological characterization of the landform assemblages in the Cachapoal and southern Maipo catchments, and the first 10Be exposure ages for moraines in this area. The Cachapoal drainage basin is characterized by a variety of morphological features, like an elevated low-relief surface, volcanoes and lava flows on valley slopes, U-shaped valley sections, roches moutonnées, and large

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Réveillet, Marion, Shelley MacDonell, Simon Gascoin, Christophe Kinnard, Stef Lhermitte, and Nicole Schaffer. "Impact of forcing on sublimation simulations for a high mountain catchment in the semiarid Andes." Cryosphere 14, no. 1 (2020): 147–63. http://dx.doi.org/10.5194/tc-14-147-2020.

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Abstract. In the semiarid Andes of Chile, farmers and industry in the cordillera lowlands depend on water from snowmelt, as annual rainfall is insufficient to meet their needs. Despite the importance of snow cover for water resources in this region, understanding of snow depth distribution and snow mass balance is limited. Whilst the effect of wind on snow cover pattern distribution has been assessed, the relative importance of melt versus sublimation has only been studied at the point scale over one catchment. Analyzing relative ablation rates and evaluating uncertainties are critical for und

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Rubilar, Juan, Fernando Martínez, César Arriagada, Juan Becerra, and Sebastián Bascuñán. "Structure of the Cordillera de la Sal: A key tectonic element for the Oligocene-Neogene evolution of the Salar de Atacama basin, Central Andes, northern Chile." Journal of South American Earth Sciences 87 (November 2018): 200–210. http://dx.doi.org/10.1016/j.jsames.2017.11.013.

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Krause-Sakate, R., A. S. Jadão, A. C. Firmino, et al. "First Report of a Lettuce-Infecting Sequivirus in Chile." Plant Disease 89, no. 10 (2005): 1129. http://dx.doi.org/10.1094/pd-89-1129a.

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Sequiviruses are isometric aphidborne plant viruses. Dandelion yellow mosaic virus (DaYMV), genus Sequivirus, was isolated from dandelion and lettuce in Europe. Lettuce mottle virus (LeMoV), a putative sequivirus, is often found in mixed infections with Lettuce mosaic virus (LMV) in Brazil (3). DaYMV, LeMoV and LMV cause similar mosaics in field-grown lettuce. Differences in biology and sequence suggest that DaYMV and LeMoV are distinct species (2). Forty-two and 101 lettuce samples with mosaic symptoms collected from two locations near Santiago during a survey of lettuce viruses in Chile in 2

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Cortés, Josefina, Isabel Ugalde, Julián Caviedes, and José Tomás Ibarra. "Semillas de montaña: recolección, usos y comercialización del piñón de la araucaria (Araucaria araucana) por comunidades Mapuche-Pewenche del sur de los Andes." Pirineos 174 (September 26, 2019): 048. http://dx.doi.org/10.3989/pirineos.2019.174008.

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La araucaria (Araucaria araucana), o pewen en lengua mapuche, es un árbol nativo de Chile y Argentina con fuerte importancia cultural para las comunidades mapuche-pewenche del sur de los Andes. Mediante el uso de metodologías cualitativas y técnicas etnográficas, se evaluaron los distintos usos actuales y los aspectos económicos y comerciales asociados al piñón, semilla de la araucaria, en una comuna cordillerana del centro-sur de Chile. Las prácticas locales relacionadas con el piñón dan cuenta de la importancia intrínseca y material de esta semilla, tanto para actores pewenche como para colo

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Quispe, D. M., and K. Lavado. "Modelo bioeconómico de esquila única en el manejo de la fibra de vicuña." Archivos de Zootecnia 68, no. 263 (2019): 348–55. http://dx.doi.org/10.21071/az.v68i263.4192.

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La vicuña (Vicugna vicugna) es un camélido sudamericano que se distribuye a lo largo de Cordillera de los Andes, con una mayor concentración de la población en el altiplano Perú - Bolivia, norte de Chile y Argentina. El objetivo de la investigación fue determinar los valores del máximo técnico (edad máxima de esquila), óptimo técnico (edad de mayor producción de fibra) y óptimo económico (periodicidad de esquila) para la esquila de la fibra de vicuña en función al modelo bioeconomico basado en la información del Centro Nacional de Conservación de Camélidos Sudamericanos sede Cala-Cala, en la p

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Vidal-Russell, Romina, Cintia P. Souto, and Andrea C. Premoli. "Multiple Pleistocene refugia in the widespread Patagonian tree Embothrium coccineum (Proteaceae)." Australian Journal of Botany 59, no. 4 (2011): 299. http://dx.doi.org/10.1071/bt10303.

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Embothrium coccineum J.R.Forst. & G.Forst is an endemic tree of the Patagonian temperate forest. The objective of this study is to evaluate the impact of last glaciation events on the genetic structure of this widespread and ecologically tolerant species, to postulate possible refugial areas. Phylogeographic analyses were performed using chloroplast DNA sequences (trnL-trnF spacer and ndhC-trnV spacer) from individuals collected in 34 populations along the total range of the species, and these results were compared with a similar study in Nothofagus. A total of 22 haplotypes were found, th

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Fosdick, Julie C., R. A. VanderLeest, J. E. Bostelmann, et al. "Revised Timing of Cenozoic Atlantic Incursions and Changing Hinterland Sediment Sources during Southern Patagonian Orogenesis." Lithosphere 2020, no. 1 (2020): 1–18. http://dx.doi.org/10.2113/2020/8883099.

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Abstract New detrital zircon U-Pb geochronology data from the Cenozoic Magallanes-Austral Basin in Argentina and Chile ~51° S establish a revised chronostratigraphy of Paleocene-Miocene foreland synorogenic strata and document the rise and subsequent isolation of hinterland sources in the Patagonian Andes from the continental margin. The upsection loss of zircons derived from the hinterland Paleozoic and Late Jurassic sources between ca. 60 and 44 Ma documents a major shift in sediment routing due to Paleogene orogenesis in the greater Patagonian-Fuegian Andes. Changes in the proportion of gra

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Giambiagi, Laura, Pamela Alvarez, and Silvana Spagnotto. "Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22-26°S), Western Cordillera, Chile, during the last 20 Ma." Tectonics 35, no. 9 (2016): 2014–33. http://dx.doi.org/10.1002/2016tc004201.

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