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The Antarctic environment poses both physical and … psychological challenges to human performance, particularly during the austral winter. Additionally, Antarctic employment involves prolonged separation … from existing social support networks.
The spatio-temporal variability in the upwelling of iron-rich Upper Circumpolar Deep Water (UCDW) is thought to have a significant impact on primary production in the Southern Ocean, since iron has been shown to be a limiting nutrient in an otherwise high nutrient region.
The role played by Southern Hemisphere sea ice in the global climate system is explored using an earth … system climate model of intermediate complexity.
The natural variability of the Weddell Sea variety of Antarctic Bottom Water (AABW) is examined in … a long-term integration of a coupled climate model. Examination of passive tracer concentrations suggests … that the model AABW is predominantly sourced in the Weddell Sea.
Sea ice is a critical but poorly understood component of … Earth’s climate system. A rapid decline in Arctic sea ice over … recent decades has been documented using historical ship … charts and satellite images. However…
The dual Tasman International Geospace Environment Radar (TIGER) HF radars regularly … observe E-region echoes at sub-auroral magnetic latitudes 58°-60°S including during … geomagnetic storms.
A statistical analysis of short-range E-region echoes observed by the SuperDARN HF radars in … the evening sector (16-22 MLT) over 3 years near the solar cycle peak is presented. Significant … populations of the high-velocity (350-450 m/s)…
A new all-sky imaging Fabry-Perot spectrometer has been installed at … Mawson station (67°36' S, 62°52' E), Antarctica. This instrument is capable … of recording independent spectra from many tens of locations across the sky … simultaneously. Useful operation began in March 2007…
Submillimetre astronomy is the prime technique to unveil the birth and early evolution of stars and galaxies in the local … and distant Universe.
The Census for Antarctic Marine Life (CAML, IPY Project 53) will investigate the … distribution and abundance of Antarctic marine biodiversity and how it will be affected … by climate change.
A description of the early days of infrared site testing at … the South Pole is given, with special attention paid to the data which … quantified the conditions during summer and the long twilight period. Such times are also provide relatively benign conditions for humans … in Antarctica as well.
In the light of the predicted global climate change, it is essential that the status and … diversity of polar microbial communities is described and understood. In the … present study, molecular tools were used to investigate the marine eukaryotic … communities of Prydz Bay, Eastern Antarctica…
Measurements of the time taken for meteor radar … echoes to decay can be used to estimate the ambipolar … diffusion coefficient. If it is assumed that the decay of the … radar echo is due strictly to the outward diffusion of ionized … material in the meteor’s trail…
] Geosynchronous Los Alamos National Laboratory (LANL-97A) satellite particle … data, riometer data…
We report on long-term surface elevation changes of the central Amery Ice Shelf … (AIS) by comparing elevation records spanning 4 decades (1968–2007). We use elevation … records acquired with the following methods: optical leveling (1968–1969); ERS … radar altimetry (1992–2003); GPS (1995–2006)…
Mitochondrial ribosomal DNA is commonly used in DNA-based dietary … analyses. In such studies, these sequences are generally assumed to be the … only version present in DNA of the organism of interest. However…
Knowledge of penguin abundance at regional and circumpolar scales across the Southern Ocean is important … for the development of ecosystem models and to estimate prey consumption by penguins to assess potential competition … with fisheries’ operations.
In January 2004 the microplankton community … from the coastal waters of Terre Ade´lie and Georges V Land … (139!E–145!E) was studied. Results showed a diatomdominated … bloom with chlorophyll a levels averaging … 0.64 lg l-1 at 5 m depth (range 0.21–1.57 lg l-1).
Alien microbes, fungi, plants and animals occur on most of the sub-Antarctic islands and some parts of the … Antarctic continent. These have arrived over approximately the last two centuries, coincident with human … activity in the region. Introduction routes have varied…
Ice cores provide a suite of proxy variables which respond to potentially complex and non-linear interactions between … many climatic and environmental variables. This complexity can obscure identification of links between ice core … measurements and classical climate variables.
An extraordinary sea ice tongue developed near 85E over a period of 30 days in … April–May 2002. The ice tongue extended to the north more than 800 km from the … surrounding ice edge and covered an area greater than 200,000 km2.
Ice-core records of methanesulphonic acid (MSA) provide a potentially powerful tool for … producing proxy records of sea ice, a critical but poorly understood component of the Earth’s climate … system. However, MSA is able to diffuse through solid ice…
The Network for the Detection of Mesopause Change (NDMC) is a global program with the … mission to promote international cooperation among research groups active in studying the … mesopause region (80-100km) with the goal of early identification of changing climate signals.
The effects of starvation on ultrastructure of … digestive gland cells were studied in furcilia larvae of Antarctic … krill (Euphausia superba: hereafter krill). Under laboratory … conditions, larvae were starved for 0, 5, 10, 15, 20 … and 25 days…
Adding carbon dioxide (CO2) to the ocean alters the carbonate chemistry and lowers pH, making surface waters more acidic and decreasing the carbonate ions available to calcifiers for calcite and aragonite production.