El presente trabajo se propone analizar los significados de las palabras que designan o se refieren a aspectos del mundo antártico. Esto es, nombres que designen a paisajes, personas, actividades, objetos y acontecimientos. Se trata de analizar los cambios semánticos, que afectan a la lengua espa...
This paper analyzes the meaning and implication of words used to describe Antarctic-related phenomena from the landscape and physical objects to the individuals stationed there, their activities, and their interaction. Attention is paid to how those individuals have semantically transformed the S...
Background: Early life stages of macroalgae, especially from polar species, can be highly vulnerable to physical
stressors, leading to important consequences for the fate of the whole population in scenarios of changing
environmental variability. In the present study, tolerance to UV and temperat...
Dos informes recientemente publicados documentan el pasado y presente, y las predicciones futuras
para el clima sobre la Antártica y el Océano Austral. De estas síntesis es claro que Antártica juega
un rol crítico en el cambio climático sufrido a nivel hemisférico y regional, y que las actividade...
Two recently released reports document the past, present and future predictions for climate over
the Antarctic and the Southern Ocean. From these syntheses it is clear that the Antarctic plays a critical
role in hemispheric to regional climate change and that in recent times human activities are ...
Background: Maritime Antarctica is severely affected by climate change and accelerating glacier retreat forming
temporal gradients of soil development. Successional patterns of soil development and plant succession in the
region are largely unknown, as are the feedback mechanisms between both pro...
The causes of Late Pleistocene megafaunal extinctions (60,000 to 11,650 years ago, hereafter 60 to 11.65 ka) remain
contentious, with major phases coinciding with both human arrival and climate change around the world. The
Americas provide a unique opportunity to disentangle these factors as huma...
The Antarctic Roadmap Challenges (ARC) project identified critical requirements to deliver high
priority Antarctic research in the 21st century. The ARC project addressed the challenges of enabling
technologies, facilitating access, providing logistics and infrastructure, and capitalizing on inte...
Los osos de agua o tardígrados, son criaturas cuya característica radica en su poder de resistencia ante ambientes o climas extremos. A pesar de su diminuto tamaño, esta especie ha dado ejemplo de supervivencia y resistencia a diferencia de otras especies que cohabitan en el reino animal. Tales c...
In January 2009, Radio Echo Sounding (RES) measures were made during the campaign in the northern part of the Antarctic Peninsula, at the surroundings of the Chilean Base Bernardo O’Higgins (63° 19’ S; 57° 53’ W). The system has three main components: Transmitter, Receiver and a Data Acquisition ...
En enero de 2009, durante una campaña al sector norte de la Península Antártica específicamente
en los alrededores de la Base Chilena Bernardo O´Higgins, ubicada en el islote Isabel Riquelme de la
rada Covadonga en el cabo Legoupi (63° 19’ S; 57° 53’ W), se realizaron mediciones de espesor del
hi...
Record-low ozone column densities (with a minimum
of 212 DU) persisted over three weeks at the Río
Gallegos NDACC (Network for the Detection of Atmospheric
Composition Change) station (51.5 S, 69.3 W) in
November 2009. Total ozone remained two standard deviations
below the climatological mea...
The individual elemental composition of insoluble airborne particulates found in King George Island (KGI), Antarctic
Peninsula (atmosphere, snow, firn and ice deposits) and in the atmosphere of Chilean Patagonia by SEM-EDS analysis
identify probable sources and transport mechanisms for the atmosp...
