Browsing by Author "Moreno Moncada, Patricio"
Now showing items 1-20 of 25
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(Elsevier Ltd, 2018)We describe the stratigraphy, age, constituent geochemistry and phenocryst thermobarometry of a closely spaced Holocene tephra couplet from Volcán Melimoyu (VMm), located in the Northern Patagonian Andes. The lower tephra ...
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(Springer Berlin, 2008-06)Fire activity has varied globally and continuously since the last glacial maximum (LGM) in response to long-term changes in global climate and shorter-term regional changes in climate, vegetation, and human land use. ...
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(Wiley, 2017)We examine the response of Nothofagus forests to climate change and disturbance regimes over the last 3200 years near Coyhaique (45 degrees S), central-east Chilean Patagonia, using fine-resolution pollen and charcoal ...
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(2012)The significance and cause of the decline in biomass burning across the Americas after ad 1500 is a topic of considerable debate. We synthesized charcoal records (a proxy for biomass burning) from the Americas and from ...
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(Geological Society of America, 2010-03-11)A suite of mechanisms has been proposed to account for natural variations in atmospheric CO2 during the Holocene; all of which have achieved limited success in reproducing the timing, direction, and magnitude of change. ...
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(Elsevier, 2012)Much of the ongoing discussion regarding synchrony or bipolar asynchrony of paleoclimate events has centered on the timing and structure of the last glacial termination in the southern mid- latitudes, in particular the ...
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(2017)La actual relación entre rasgos foliares con variables ambientales ha sido ampliamente utilizados como indicadores para la estimación de condiciones climáticas pasadas. Además, se ha observado que para algunos rasgos, ...
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(Universidad de Chile, 2022)Durante la Última Terminación Glacial (T1: ~18-11 ka), el aumento de la temperatura promedio global provocó el retroceso de los glaciares del Manto de Hielo Patagónico, permitiendo la formación de un gran número de lagos ...
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(SERVICIO NACIONAL GEOLOGIA MINERIA, 2011-01)Newly described outcrops, excavations and sediment cores from the region of Ultima Esperanza, Magallanes, contain tephra derived from the large late-glacial explosive RI eruption of the Reclus volcano in the Andean Austral ...
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(Universidad de Chile, 2012)
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(Andean Geology, 2016)Two Holocene tephras encountered in outcrops, cores and trenches in bogs, and lake cores in the area around Cochrane, southern Chile, are identified (based on their age, tephra glass color and morphology, mineralogy, and ...
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(Copernicus Gesellschaft MBH, 2015)Glacier behaviour during the mid-Holocene (MH, 6000 years BP) in the Southern Hemisphere provides observational data to constrain our understanding of the origin and propagation of palaeoclimate signals. In this study we ...
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(Springer-Verlag, 2014)Lakes formed in the Aysén region of southern Chile after the retreat of mountain glaciers, established by ~17,900 calendar years before present (cal years BP) or earlier, contain numerous late-glacial and Holocene tephra ...
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(Universidad de Chile, 2019)La aceleración del cambio climático ha aumentado el interés en los estudios paleoambientales con el objeto de conocer la variabilidad natural del clima y sus efectos sobre el medio ambiente. En el sur de Chile estos estudios ...
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(Universisdad de Chile, 2007)El análisis estratigrafico de partículas macroscópicas de carbón preservadas en sedimentos lacustre de Lago Campanario (41.6°S, 72.2°W) y Lago Proschel (41,5 °S, 72.5°W) región de los Lagos, permite desarrollar una ...
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(Elsevier, 2014)The development of quantitative temperature reconstructions in regions of paleoclimate interest is an important step for providing reliable temperature estimates in that region. Fossil chironomid assemblages have been studied ...
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(Universidad de Chile, 2022)El cinturón de vientos del oeste del hemisferio sur tiene un rol fundamental en el intercambio de CO2 océano y atmósfera. Variaciones en su posición y/o intensidad genera cambios en la precipitación y temperatura, lo que ...
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(Universidad de Chile, 2010)En esta tesis se presenta un análisis de polen y carbón fósil de alta resolución temporal realizado sobre el registro sedimentario de Lago Pichilafquén (40°44'5, 72°290;218 msnm), una pequeña cuenca sin afluentes ubicada ...
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(Nature Publishing Group, 2014)Late twentieth-century instrumental records reveal a persistent southward shift of the Southern Westerly Winds during austral summer and autumn associated with a positive trend of the Southern Annular Mode (SAM) and ...
