Uribe, J.; Zamora, R.; Oberreuter, J. and Rivera, A. (2017) : "Descubrimiento del Lago Subglacial CECs en Antártica occidental" Revista de Glaciares y Ecosistemas de Montaña del INAIGEM, 51-58.

Se reporta el descubrimiento del Lago Subglacial CECs (en honor al nombre de la institución, Centro de Estudios Científicos), ubicado en la parte central del casquete de hielo de la Antártica Occidental (WAIS, por sus siglas en inglés), en la divisoria entre el Glaciar Minnesota y la Corriente de...


Jordanova, P.; Fabian, Z.; Hermann, P.; Strelec, L.; Rivera, A.; Girard, S.; Torres, S. and Stehlik, M. (2016) : "Weak properties and robustness of t-Hill estimators" Extremes: Statistical Theory and Applications in Science, Engineering and Economics, 19:591–626 DOI 10.1007/s10687-016-0256-2.

We describe a novel method of heavy tails estimation based on transformed score (t-score). Based on a new score moment method we derive the t-Hill estimator, which estimates the extreme value index of a distribution function with regularly varying tail. t-Hill estimator is distribution sensitive,...


Wilson, R.; Carrión, D. and Rivera, A. (2016) : "Detailed dynamic, geometric and supraglacial moraine data for Glaciar Pio XI, the only surge-type glacier of the Southern Patagonia Icefield" Annals of Glaciology, doi: 10.1017/aog.2016.32.

In contrast to the general trend for glaciers of the Southern Patagonia Icefield, Glaciar Pio XI has experienced a large cumulative frontal advance since 1945. In an effort to better understand this advancing behaviour, this paper presents a synoptic analysis of frontal fluctuations (1998–2014)...


Gourlet, P.; Rignot, E.; Rivera, A. and Casassa, G. (2016) : "Ice thickness of the northern half of the Patagonia Icefields of South America from high-resolution airborne gravity surveys" Geophysical Research Letters, 43, 241-249, DOI:10.1002/2015GL066728.

We employ high-resolution, high-precision, helicopter-borne gravity observations of the Northern (NPI) and Southern Patagonia Icefields (SPI), South America, to infer ice thickness and bed topography using a three-dimensional model constrained by Fjord and lake bathymetry, and a land-ice mask. Th...


Gacitúa, G.; Uribe, J.A.; Wilson, R.; Loriaux, T.; Hernández, J. & Rivera, A. (2015) : "50MHz helicopter-borne radar data for determination of glacier thermal regime in the central Chilean Andes" Annals of Glaciology, 56(70) 2015 doi: 10.3189/2015AoG70A953.

Despite their importance as freshwater reservoirs for downstream river systems, few glaciers in central Chile have been comprehensively surveyed. This study presents ground-penetrating radar (GPR) and field-based observations for characterizing the englacial and basal conditions of Glaciar Olivar...


Rivera, A.; Uribe, J.; Zamora, R.; & Oberreuter, J. (2015) : "Subglacial Lake CECs: Discovery and in situ survey of a privileged research site in West Antartica" Geophysical Research Letters, 10.1002/2015GL063390.

We report the discovery and on-the-ground radar mapping of a subglacial lake in Antarctica, that we have named Lake CECs (Centro de Estudios Científicos) in honor of the institute we belong to. It is located in the central part of the West Antarctic Ice Sheet, right underneath the Institute Ice S...


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