Los herederos de la crisis: colonización y adaptación agrícola de los suizos. Línea Cuchilla-Misiones (1935-1939). En: LaRivada, V. 2, n° 2

Entre 1935 y 1939 se produjo la llegada de una nueva corriente de inmigrantes suizos al Territorio Nacional de Misiones. Éstos –a diferencia de los ya establecidos una década antes atraídos por las ventajas que ofrecía el cultivo de la yerba mate– vinieron en condiciones de desocupación producto de la crisis económica por la que estaba atravesando su país de origen. Sin embargo, debido a la creación de la Comisión Reguladora de la Yerba Mate [CRYM] en 1935, una vez asentado en territorio misionero no pudieron realizar plantaciones de yerba mate por lo que debieron buscar otras fuentes de sustento. Línea Cuchilla fue una de las colonias destino de esta corriente y, en ese sentido, nos proponemos analizar los factores de atracción y las principales dificultades que tuvieron en la adaptación al nuevo espacio. Metodológicamente, se trabajó con memorias y entrevistas a los inmigrantes y sus descendientes, con el relato de Luis Ferrari En Misión a Misiones y con el documental Gli eredi della crisi.

Weinbau. Por Ernst Vogt. 258 pp. Eugen Ulmer, editor. Stuttgart 1951.

Fil: A. M..

Horizontal profiles of longwave and shortwave radiation components over sea ice near Barrow, Alaska during the 2011 melt

An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.