Bravo C.; Quincey D.J.; Ross A.N.; Rivera A.; Brock B.; Miles E. and Silva A. (2019) : "Air Temperature Characteristics, Distribution, and Impact on Modeled Ablation for the South Patagonia Icefield" Journal of Geophysical Research Atmospheres, DOI: 10.1029/2018JD028857.

The glaciers of Patagonia are the largest in South America and are shrinking rapidly, raising concerns about their contribution to sea?level-rise in the face of ongoing climatic change. However, modelling studies forecasting future glacier recession are limited by the scarcity of measured on?glac...


Gomez R.; Arigony-Neto J.; De Santis A.; Vijay S.; Jaña R. and Rivera A. (2019) : "Ice dynamics of union glacier from SAR offset tracking" Global and Planetary Change, v.174, pages 1-15.

The Antarctic ice sheet is predicted to be the major contributor to sea-level rise during the XXI century. Therefore, monitoring ice dynamics of outlet glaciers in Antarctica is of great importance to assess future sea-level rise predictions. Union Glacier is one of the major outlet glaciers of t...


Rivera A. (2018) : "Glaciar Pío XI: La excepción a la tendencia de desglaciación en Patagonia" Revista Geográfica de Chile Terra Australis Vol.54, ISSN 0719-9562 pp. 1-12.

El glaciar Pío XI también llamado Brüggen (49°13'S 74°O), es el más grande del Campo de Hielo Sur (CHS), ha experimentado desde 1945 un aumento neto de área de 126 km² debido a un casi permanente estado de avance con tasas de 150 m/a y un engrosamiento de 2 m/a entre 1975 y 2013. Este comportamie...


Lenzano M.G.; Lannutti E.; Toth C.; Rivera A. and Lenzano L. (2018) : "Detecting Glacier Surface Motion by Optical Flow" Photogrammetric Engineering & Remote Sensing, 84: 33-42, DOI: 10.14358/PERS.84.1.33.

In this study, we assessed the feasibility of using optical flow, in particular, large displacement optical flow (LDOF) method as a possible solution to obtain surface movement data to derive ice flow velocities in a glacier. Tests were carried out at the Viedma Glacier, located at the South Pata...


Uribe J.; Zamora R. and Rivera A. (2017) : "High resolution FM-CW radar for internal layers mapping in cold ice" First international symposium on geoscience and remote sensing (GRSS-CHILE), DOI: 10.1109/GRSS-CHILE.2017.7996001.

A wideband ground penetrating radar was developed in order to detect internal layers in firn and shallow ice, with high resolution. Mapping of near-surface layers improves traditional snow accumulation measurements, extending the spatial and temporal coverage. This system is a frequency-modulated...


Oberreuter J.; Pulgar S. and Rivera A. (2017) : "An integrated bathymetric and seismic profiling system" First international symposium on geoscience and remote sensing (GRSS-CHILE), DOI: 10.1109/GRSS-CHILE.2017.7996020.

We developed a system that integrates bathymetric and seismic measurements. The system consists of an active transducer, hydrophone streamer and an electronic unit. The source waves travel through water, they reach the water/sediment interface, one part is reflected back to the surface and the ot...


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