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Long-range forecasts of Antarctic sea ice are tery much in demand, not only because of … the potential importance of sea ice in global climate, but also for the practical purpose of … exploring the Antarctic continent. Unfortunately…
In their Policy Forum review “Do the largest protected areas conserve whales or whalers?” (Science, 28 Jan 2006, p.525), Gerber and co-authors criticised the scientific basis of the International Whaling Commissions’ (IWC)…
To date humpback whales (Megaptera novaeangliae) that breed close to the west (stock D) and the … east coast (stock E) of Australia are thought to restrict their feeding to IWC Management areas IV and … V respectively…
The most recent assessment of stocks D and E uses a population model that allows for mixing between feeding areas (Johnston … and Butterworth 2002, 2005).
Using steel pins inserted into growing moss … colonies near Casey Station, Wilkes Land, continental … Antarctica, we have measured the growth rate of three … moss species: Bryum pseudotriquetrum and Schistidium … antarctici over 20 years and Ceratodon purpureus … over 10 years.
AB: Spectral calibrations, airglow and possibly auroral contaminations, solar and telluric absorption features and the selection of transition probabilities can all influence rotational temperatures derived from measurements of hydroxyl airglow intensities.
Auroral westward flow channels (A WFCs) are intense, narrow channels of westward drift overlapping the equatorward edge of the … auroral oval in the pre-magnetic midnight sector. They are a close relative of the sub-auroral polarisation stream which encompasses … polarisation jets…
Earthward injections of energetic ions and electrons … mark the onset of magnetospheric substorms. In the inner … magnetosphere (L4), the energetic ions drift westward … and the electrons eastward, thereby enhancing the equatorial … ring current.
A methodology for the on-site chemical assessment of contaminant metals in soil was successfully … developed, tested and employed to facilitate the clean-up of the abandoned Thala Valley waste disposal site … at Australia’s Casey station in 2003/04.
Improved testing and remediation procedures for sites … contaminated with petroleum hydrocarbons are a priority … in remote cold regions such as Antarctica, where costs are … higher and remediation times are longer.
An historical data set, collected in 1958 by Southward and Crisp, was used as a baseline for detecting … change in the abundances of species in the rocky intertidal of Ireland. In 2003, the abundances of each of … 27 species was assessed using the same methodologies (ACFOR…
The effect of different light regimes on physiological parameters (feeding activity, oxygen consumption, and … activity of the metabolic enzyme malate dehydrogenase [MDH]) of Antarctic krill, Euphausia superba, was studied … over 12 weeks under laboratory conditions.
Krill are thought to be predominantly herbivorous, but a heterotrophic diet might be crucial for … their growth and survival. To compare the influence of herbivory and carnivory on krill we conducted a nine … month feeding trial. We examined lipid composition of the hepatopancreas…
Hundreds of thousands of seabirds are killed each year as a result of interacting with longline … and trawl fishing operations, and the severity of the impact varies regionally. Shy and whitecapped … albatrosses, Thalassarche cauta and Thalassarche steadi respectively…
Natural attenuation of petroleum hydrocarbons in polar and subpolar soils is limited by low nutrients, low temperatures, and … water availability.
PILOT (Pathfnder for an International Large Optical Tele- … scope) is a proposed 2 m class optical/infrared telescope to be sited … at Dome C on the Antarctic plateau. Recent site testing results from … Dome C have shown remarkable ground level seeing, a large isoplanatic … angle…
Southern Ocean waters are highly productive and contain important food resources for … many indigenous predators, including humans. Management of these resources has fallen under … the regulation of the Convention for the Conservation of Antarctic Marine Living Resources … (CCAMLR)…
Growth conditions in Antarctica are extreme, and the few plants that can … grow there are exposed to a highly seasonal, rapidly variable and often … extreme climate. In recent decades, these plants have also been exposed to … increased levels of UV-B radiation (UV-BR)…
A review is presented of passive coherent and incoherent radar observations of … ultra-low-frequency (ULF) waves. Passive radars primarily observe the ionospheric … signatures of the shear Alfven field line resonance (FLR). Recent results … include:
Fresnel transform meteor speed estimation is … investigated. A spectral based technique is developed allowing the transform to be applied at low temporal sampling rates. Simulations are used to compare meteoroid … speeds determined using the Fresnel transform and alternative techniques…
Semi-diurnal oscillations are a ubiquitous feature of polar sea-ice motion. Over much of the … Arctic basin, inertial and semi-diurnal tidal variability have similar frequencies so that periodicity alone … is inadequate to determine the source of oscillations.
This paper presents the meteor temperatures estimated using two radars installed … in Davis (69 deg S, 78 deg E), Antarctica. The Davis MST radar was installed in … February 2003, primarily for observation of polar mesosphere summer echoes…
We report nitrate (NO3) nitrogen isotope ratios for seawater samples collected in the … Subantarctic Zone of the Southern Ocean during both winter and summer as part of the … Australian Antarctic CRC Subantarctic Zone (SAZ) Project.
Antarctica is both the coldest and most arid continent on Earth, and experiences continuous … light in midsummer and continuous darkness in midwinter. These factors reduce the growth … rate of the continental Antarctic flora (mosses, lichens and algae) to a minimum.