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Introduction
I work on the mass balance of Andean glaciers with field measurements and satellites images. I also participate in National Glacier inventory of Argentina.
Our main objective is to measure the accumulation and ablation on four of Argentinean glaciers in a wide range of environmental conditions, as well as to obtain hydro-meteorological field data.
This data is key to know the current state of Andean glaciers, measure their contribution to streamflow and estimate their probable evolution.
Skills and Expertise
Publications
Publications (36)
This chapter addresses the distribution and characteristics of the Patagonian glaciers together with their recent changes and hydrological implications. Recently published national glacier inventories for the Andes between ca. 37 °S and 55 °S indicate that this region contains 24,000 ice masses covering ca. 26,100 km2. This includes the Southern Pa...
The Desert Andes contain >4500 ice masses, but only a handful are currently being monitored. We present the mass changes of the small mountain glacier Agua Negra (1 km ² ) and of the rest of glaciers in the Jáchal river basin. Remote-sensing data show Agua Negra glacier lost 23% of its area during 1959–2019. Glaciological measurements during 2014–2...
Over the past 40 years, the HBV (Hydrologiska Byråns Vattenbalansavdelning) hydrological model has been one of the most used worldwide due to its robustness, simplicity and reliable results. Despite these advantages, the available versions impose some limitations for research studies in mountain watersheds dominated by ice-snow melt runoff (i.e.: n...
Based on the recently released National Glacier Inventory (NGI), we analyzed the characteristics and the mass balance rates of ice masses in the Argentinean Central Andes (ca. 30°–37° S). The NGI provides unprecedented information on area, number and distribution of different ice masses, including debris-covered glaciers and rock glaciers. In the C...
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Glaciers and the periglacial environment in Argentina have been protected by the Law since 2010. This legislation required the development of the first National Glacier Inventory (NGI), which was officially presented in May 2018 and based on satellite images spanning between 2004 and 2016. Here, we present the methods and results of the NGI, summar...
Glacier ice thickness is crucial to quantifying water resources in mountain regions, and is an essential input for ice-flow models. Using a surface velocity inversion method, we combine ice thickness measurements with detailed surface elevation and velocity data, and derive ice thickness and volume estimates for the Monte Tronador glaciers, North P...
The Andes Cordillera contains the most diverse cryosphere on Earth, including extensive areas covered by seasonal snow, numerous tropical and extratropical glaciers, and many mountain permafrost landforms. Here, we review some recent advances in the study of the main components of the cryosphere in the Andes, and discuss the changes observed in the...
Glacier-mass changes are a reliable indicator of climate change. On behalf of the worldwide network of glacier observers, we urge parties to the United Nations Framework Convention on Climate Change to boost international cooperation in monitoring these changes, and to include the
results in the Paris agreement’s global stocktake.
The rivers originating in the southern Andes (18°–55°S) support numerous ecosystems and a large number of human populations and socio-economic activities in the adjacent lowlands of Chile, Argentina and Bolivia. Here we show that ca. 75% of the total variance in the streamflow records from this extensive region can be explained by only eight spatia...
Andean glaciers are among the fastest shrinking and largest contributors to sea level rise on Earth. They also represent crucial water resources in many tropical and semi-arid mountain catchments. Yet the magnitude of the recent ice loss is still debated. Here we present Andean glacier mass changes (from 10° N to 56° S) between 2000 and 2018 using...
The prominent Andes cordillera induces significant differences in climates between its eastern and western slopes. These climatic differences are largely reflected by contrasting vegetation and ice coverages but remain poorly documented. This study quantifies the abrupt changes of precipitation and cloud properties at both sides of the Andes south...
El complejo volcánico Planchón-Peteroa es uno de los más activos de la región ya que su registro histórico incluye una veintena de eventos eruptivos. El macizo cuenta con 6,3 km² de glaciares en el sector Argentino. El glaciar Azufre fue seleccionado para realizar estudios de detalle dentro del marco del Inventario Nacional de Glaciares (ING) (IANI...
Eje temático: El ambiente en crisis Introducción La provincia de Mendoza localizada en el centro oeste argentino, dentro de la denominada diagonal sudamericana, depende para su subsistencia de lo que ocurre en las montañas, localizadas al oeste, en donde se originan los ríos más importantes. Estos se alimentan particularmente de la nieve caída dura...
The Southern Annular Mode (SAM), also known as the Antarctic Oscillation (AAO), describes the north–south movement of the westerly wind belt that circles Antarctica, dominating the middle to higher latitudes of the Southern Hemisphere. The changing position of the westerly wind belt influences the strength and position of cold fronts and mid-latitu...
Los glaciares constituyen reservas hídricas en estado sólido y son componentes cruciales del sistema hidrológico de montaña. A pesar de su importancia, no existía en Argentina información precisa sobre el número, ubicación y tamaño de estos cuerpos de hielo. En el año 2010, se sanciona la Ley 26639 de “Presupuestos Mínimos para la Preservación de l...
Glaciers in the northern Patagonian Andes (35–46° S) have shown a
dramatic decline in area in the last decades. However, little is known about
glacier mass balance changes in this region. This study presents a geodetic
mass balance estimate of Monte Tronador (41.15° S;
71.88° W) glaciers by comparing a Pléiades digital elevation
model (DEM) acquire...
Glaciers are sensitive indicators of climate change. Particularly, glacier surface velocity constitutes a key parameter for estimating ice volume variations as response to global warming and its incidence in sea level rise. Several methodologies based in remotely sensed data have been employed for estimating ice velocity fields. They are mostly bas...
Glaciers in the North Patagonian Andes (35°-46° S) have shown a dramatic area decline in the last decades. However, little it is known about glacier mass balance changes in this region. This study presents a geodetic mass balance 10 estimate of Monte Tronador (41.15° S; 71.88° W) glaciers by comparing a Pléiades DEM acquired in 2012 with the SRTM X...
Despite the great number and variety of glaciers in southern South America, in situ glacier mass-balance records are extremely scarce and glacier–climate relationships are still poorly understood in this region. Here we use the longest (> 35 years) and most complete in situ mass-balance record, available for the Echaurren Norte glacier (ECH) in the...
We apply cross-correlation to Pléiades satellite images to generate accurate, high-resolution monthly surface velocity maps of Monte Tronador glaciers between March and June 2012. Measured surface displacements cover periods as short as 19 days, with a precision of �0.58 m (11 m a –1). These glaciers follow a radial flow pattern, with maximum surfa...
Despite the great number and variety of glaciers in southern South America, in situ glacier mass balance records are extremely scarce and glacier–climate relationships are still poorly understood in this region. Here we use the longest (> 35 years) and most complete in situ mass balance record, available for glaciar Echaurren Norte in the Andes at...
Observations show that glaciers around the world are in retreat and losing mass. Internationally coordinated for over a century, glacier monitoring activities provide an unprecedented dataset of glacier observations from ground, air and space. Glacier studies generally select specific parts of these datasets to obtain optimal assessments of the mas...
Most glaciological studies in Argentina have focused on the large outlet glaciers of the Southern Patagonia Icefield (SPI); the numerous smaller neighboring glaciers have received significantly less attention. We present an inventory of 248 medium-to small-size glaciers (0.01–25 km 2) adjacent to the northeast margin of the SPI, describe their chan...
The Central Andes of Chile and Argentina (31-35ï¿S) contain a large number and variety of ice masses, but only two surging glaciers have been studied in this region. We analyzed the 2002-2006 surge of the Horcones Inferior Glacier, Mount Aconcagua, Argentina, based on medium spatial resolution (15-30 m) satellite images and digital elevation models...
In response to climate change, most glaciers are losing mass and hence contribute to sea-level rise. Repeated and accurate mapping of their surface topography is required to estimate their mass balance and to extrapolate/calibrate sparse field glaciological measurements. In this study we evaluate the potential of sub-meter stereo imagery from the r...
In response to climate change, most glaciers are losing mass and hence contribute to sea-level rise. Repeated and accurate mapping of their surface topography is required to estimate their mass balance and to extrapolate/calibrate sparse field glaciological measurements. In this study we evaluate the potential of Pléiades sub-meter stereo imagery t...
We explore the climatic information contained in the record of length
fluctuations of Glaciar Frías, in the north Patagonian Andes of
Argentina. This record is one of the longest and most detailed glacier
records in southern South America, starting in 1639. In order to
interpret the length variations of Glaciar Frías since the
maximum Little Ice Ag...
Glaciers are among the best natural proxies of climatic changes and, as
such, a key variable within the international climate observing system.
The worldwide monitoring of glacier distribution and fluctuations has
been internationally coordinated for more than a century. Direct
measurements of seasonal and annual glacier mass balance are available...
We explore the climatic information contained in the record of length fluctuations of Glaciar Frías, in the North Patagonian Andes of Argentina. This record is one of the longest and most detailed glacier records in southern South America, starting in 1639. In order to interpret the length variations of Glaciar Frías since the maximum Little Ice Ag...
This paper documents the occurrence of the Little Ice Age (LIA) in the El Azufre and El Peñón glaciers at 35°S and in the Las Choicas and Las Damas glaciers at 34°55′S in the headwaters of the Rio Grande basin in the Central Andes of Argentina. Moraine morphology, stratigraphic relationships, radiocarbon ages obtained from peat on these glacial dep...
Resumen. El objetivo de este trabajo es revisar los métodos de procesamiento de información de sensores remotos utilizados para el estudio de los glaciares del Cerro Aconcagua. El inventario de glaciares realizado con fotografías aéreas de 1963 y basado en análisis visual brindó información de alta calidad pero requirió de una cantidad muy intensiv...
