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The use of sophisticated telemetry logging devices has revealed that short-finned pilot whales employ … energetic sprints to chase down their deep-dwelling prey. These sprints are costly in terms of energy, and therefore oxygen…
Pre-HEAT is a 20 cm aperture submillimeter-wave telescope with a 660 GHz (450 micron) Schottky diode heterodyne … receiver and digital FFT spectrometer for the Plateau Observatory (PLATO) developed by the University of New South … Wales. In January 2008 it was deployed to Dome A…
The correct identification of ionospheric echoes and 'ground' or 'sea' echoes is important to a … wide variety of studies using SuperDARN radar data. FITACF correctly distinguishes the … majority of ionospheric and ground echoes…
1. The crabeater seal … Lobodon carcinophaga … is considered to be a key species in the krill-based foodweb … of the Southern Ocean. Reliable estimates of the abundance of this species are necessary to … allow the development of multispecies, predator…
In September–October 2005, the juxtaposition of low- and high-pressure anomalies at … 130W and 60W, respectively, created strong and persistent northerly airflow across the … West Antarctic Peninsula (WAP). This had a major impact on regional sea ice conditions…
We present the first detailed maps of fast ice around East Antarctica (75E–170E), using an image correlation technique applied to RADARSAT ScanSAR images from … November in 1997 and 1999. This method is based upon searching for, and distinguishing…
Antarctic fast ice is of key climatic and ecological importance, yet its distribution and … variability are poorly understood. We present a detailed analysis of fast ice along the Adélie Land coast … (East Antarctica) using satellite data from 1992 to 1999.
Zooplankton and benthic invertebrates are important components of polar lakes and often form the highest trophic level in the aquatic food web. Their biodiversity decreases towards high latitudes…
We review aspects of climate change likely to impact upon the Collembola and mites (microarthropods) of Victoria Land and the Queen Maud Mountains (VLQMM) in the Ross Sea Region of Antarctica. Five important aspects of biological and biological…
Anthropogenic CO2 added to the atmosphere during and since the industrial revolution is entering the global ocean. Addition of extra (anthropogenic) CO2 to the ocean changes the carbonate chemistry and the pH of the surface ocean…
Sub-Antarctic islands have a diversity of origins in detail but most are volcanic and very young suggesting that they are short-lived and that the distribution would have been very different a few million years ago. They contrast with the common tourist brochure concept of oceanic islands.
From a synthesis of recent oceanic observations and paleo-data it is evident that certain species … of giant diatoms including Rhizosolenia spp. Thalassiothrix spp. and Ethmodiscus rex may … become concentrated at oceanic frontal zones and subsequently form episodes of mass flux to the … sediment.
Six Eudorylaimus species living on Antarctic mainland are described and compared on the basis of … paratype or freshly collected specimens. They are: E. antarcticus (Steiner, 1916) Yeates, 1970, E. nudicaudatus Heyns, 1993, E. shirasei Kito, Shishida & Ohyama, 1996, E. glacialis Andrássy…
Antarctica is a continent locked in ice, with almost 99.7% of current terrain covered by permanent ice and snow, and clear evidence that, as recently as the Last Glacial Maximum (LGM), ice sheets were both thicker and much … more extensive than they are now.
The sea ice microbial community plays a key role in the productivity of the Southern Ocean. Exopolysaccharide … (EPS) is a major component of the exopolymer secreted by many marine bacteria to enhance survival … and is abundant in sea ice brine channels, but little is known about its function there.
Bacteria play a key role in the world’s oceans, supporting nutrient remineralisation and … mediating carbon transfer. Little is known about annual changes in bacterial concentration, production … and metabolism during the extreme seasonal changes in biological productivity in Antarctic … waters.
Because of the vast reservoirs of water mass held in the great ice sheets of Antarctica and Greenland, determining the … role that they play in global sea level has long been a major challenge of polar science. But until recent advances in … measurement technology…
A conceptual, lithospheric-scale cross-section of the conjugate, oblique-slip margins of George V Land, East … Antarctica, and southeast Australia (Otway Basin) has been constructed based on the integration of seismic and sample … data.
Two small-scale Antarctic marine ecosystem surveys were conducted offshore from the Mawson coast ð61266EÞ, in the austral … summers of January 2001 and 2003.
A key factor influencing wildlife responses to … human activity is the degree to which animals have been … previously exposed to human stimuli. On subantarctic … Macquarie Island, gentoo penguins Pygoscelis papua … breed in areas of high and low human activity (on and … off-station, respectively).