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We present a statistical analysis of short-range E region echoes observed by the Super … Dual Auroral Radar Network (SuperDARN) HF radars in the evening sector (16–22 … MLT) over 3 years. Significant populations of the high-velocity (350–450 m/s)…
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…
: SuperDARN (SuperDual Auroral Radar Network) provides multi-point … observations of ionospheric flows over both southern and northern … hemisphere auroral regions and similarly GPS TEC and tomography … observations provide images of structures in the ionosphere and … plasmasphere.
PLATO, the ‘PLATeau Observatory’, is a robotic Antarctic observatory developed by UNSW for deployment to … Dome A, the highest point on the Antarctic plateau. PLATO is designed to run autonomously for up to a year, providing … power…
The Antarctic Plateau contains sites with the potential to be the best in the world for many astronomical observations. The Plateau has strong advantages in the waveband between thermal-IR and millimetre-waves, for time-based astronomy, and for adaptive optics and interferometry.
ABSTRACT. The PLATeau Observatory (PLATO) is an automated self-powered astrophysical observatory that … was deployed to Dome A, the highest point on the Antarctic plateau, in 2008 January.
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…
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…
There is widespread recognition of the benefits in automating procedures for the collection of scientific data, and an increasing ability to do so as technology advances.
The Spanish system of longline fishing is used in a range of demersal and semi-pelagic fisheries … throughout the southern hemisphere and has been the source of a large number of seabird fatalities.
Many parasitic Apicomplexa, such as Plasmodium falciparum, contain an unpigmented chloroplast remnant termed the … apicoplast, which is a target for malaria treatment. However, no close relative of apicomplexans with a functional … photosynthetic plastid has yet been described.
The capacity of the polar flora to adapt is of increasing concern given current and predicted … environmental change in these regions. Previous genetic studies of Antarctic mosses have been of limited … value due to a lack of variation in the markers or non-specificity of the methods used.
Identification of DNA sequence diversity is a powerful means for assessing the … species present in environmental samples.
Airgun ‘shots’ from seismic surveys are powerful enough to be heard across ocean basins. At … close range, though, there is extraordinarily little understanding of the potential for these intense … sounds to cause temporary or permanent hearing threshold shifts (TTS/PTS) in marine … mammals.
Power spectral density (PSD) of cosmic rays has been calculated from hourly … averaged counts observed by underground muon telescopes located at Mawson over the … low-frequency range 2.7 ×10−7 –1.4 × 10−4 Hz. The first two harmonics of the solar daily … variation are well defined for even cycles…
Recent data have shown that Dome C, on the Antarctic plateau, is an exceptional site for astronomy, with atmospheric conditions superior to those at any existing mid-latitude site. Dome C, however, may not be the best site on the Antarctic plateau for every kind of astronomy.
This overview describes an international scientific cooperation between Brazil, USA and Japan, for an … integrated research program developed in south of Brazil for observations of solar-terrestrial interactions … and geospace.
Fan-Beam and Pencil-Beam Radar Scaterrometers on many satellites in polar orbits, e.g. ERS-1/2, ADEOS-1/2 and QuikSCAT, have been designed primarily for estimation of vector winds over the … global oceans. However, these scatterometers…
Long term acoustic records of underwater sound can be used to assess the timing of migrations, peak periods of … relative abundance, and seasonality and overlap of different species’ presence over large spatial scales.
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…
Natural attenuation of petroleum hydrocarbons in polar and subpolar soils is limited by low nutrients, low temperatures, and … water availability.
Over the past decade we have developed a series of increas- … ingly sophisticated robotic instruments for site testing in Antarctica. These range from exceedingly low power cloud monitors to fully au- … tonomous 30 cm telescopes, and cover from the ultraviolet to the sub- … mm.
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)…
Models of variability in Adélie penguin foraging trip durations were constructed and fitted … to data collected at Béchervaise Island over a 12-year period when only natural variation … was known to occur. Variability among trips and penguins was greater in the crèche … stage…
Statistical models of variation in Adélie penguin fledgling weight data were used to … examine the power to detect a change in fledgling weights after an impact.