2017
DOI: 10.5027/andgeov45n1-3034
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Velocidades superficiales del glaciar Upsala, Andes Patagónicos Sur, mediante el uso de correlación cruzada en imágenes satelitales: periodo 2013-2014.

Abstract: ABSTRACT. In this study we present surface velocities estimation for the Upsala glacier catchment, South Patagonian Ice Field (SPI) during the summer season of years 2013 (January-March) and 2014 (March-April), including the Bertacchi, Cono, and Murallón tributaries using satellite images from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). The Cross-Correlation method was applied by COSI-Corr technique with sub-pixel accuracy. In general, it should be noted that the SPI glaciers, and U… Show more

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Cited by 15 publications
(7 citation statements)
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“…Nevertheless, although GOM Correlate provided good results for a few datasets, COSI-Corr software was able to process all the available datasets (Table 6). An analysis of portions of the slope not affected by the 3 December 2013 landslide was performed to estimate the sub-pixel accuracy and the environmental and instrumental background noise affecting each dataset, as previously performed by several authors [8,31,35,[62][63][64][65][77][78][79][80][81][82][83][84]. Nevertheless, although GOM Correlate provided good results for a few datasets, COSI-Corr software was able to process all the available datasets (Table 6).…”
Section: Discussionmentioning
confidence: 99%
“…Nevertheless, although GOM Correlate provided good results for a few datasets, COSI-Corr software was able to process all the available datasets (Table 6). An analysis of portions of the slope not affected by the 3 December 2013 landslide was performed to estimate the sub-pixel accuracy and the environmental and instrumental background noise affecting each dataset, as previously performed by several authors [8,31,35,[62][63][64][65][77][78][79][80][81][82][83][84]. Nevertheless, although GOM Correlate provided good results for a few datasets, COSI-Corr software was able to process all the available datasets (Table 6).…”
Section: Discussionmentioning
confidence: 99%
“…Para detectar con mayor detalle las diversas geoformas, se utilizó la banda 8 pancromática (Landsat ETM+) e imágenes ASTER, ambas de 15 m de resolución. Las imágenes ASTER, L1A, se ortorectificaron a partir del Modelo Digital de Elevación (MDE) SRTM (Shuttle Radar Topography Mission) (Moragues et al, 2018). Las imágenes de satélite y el SRTM se adquirieron desde el portal Earth Explorer de USGS (United States Geological Survey, www.earthexplorer.usgs.gov).…”
Section: Geomorfología Paraglacialunclassified
“…El CHPS, presenta grandes extensiones cubiertas de hielo que en las últimas décadas ha sufrido pérdida de masa y rápido retiro de los frentes de los glaciares (Glasser et al, 2011;Willis et al, 2012, entre otros). El glaciar Upsala, principal cuerpo de hielo del área, y sus glaciares tributarios no han sido la excepción (Naruse y Skvarca, 2000;Sakakibara y Sugiyama, 2014;Moragues et al, 2018;Foresta et al, 2018;entre otros). Es uno de los glaciares templados más dinámicos (Sakakibara et al, 2013), que presenta una combinación de procesos y mecanismos que lo convierten en un glaciar altamente activo debido a su rápido retroceso frontal, variaciones en la velocidad superficial, cambios en la ablación y balance de masa, y una elevada tasa de calving.…”
Section: Relación Entre La Dinámica Glaciar Y Los Procesos Paraglacialesunclassified
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