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This paper outlines work at La Trobe University on the development of a “fully digital” radar for space weather … investigations. The new radar will enhance the existing Tasman International Geospace Environment Radar … (TIGER) that probes beyond the horizon…
Sea-ice brine algal communities were exposed … to salinities between 30 and 10& during melting. There … was a progressive decline in maximum quantum yield, relative electron transfer rate (rETRmax) and photosynthetic … efficiency (a) with decreasing salinity of the final … melted sample.
A high-latitude tide basis function that describes the major migratingand non-migrating components of the semidiurnal and … diurnal tide can be fitted to wind data using linear least-squares fitting techniques. MF radars at Davis (695, 78E), Syowa (695, 40E), Rothera (685, 68W) and Scott Base (785…
Mineral equilibria modelling and electron microprobe chemical dating of monazite in granulite facies … metapelitic assemblages from the MacRobertson Land coastline, Rayner Complex, east Antarctica, are … consistent with an !anticlockwise" Neoproterozoic P–T–t path. Metamorphism occurred at c.
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.
Akasofu’s solar wind " parameter describes the … coupling of solar wind energy to the magnetosphere and … ionosphere. Analysis of fluctuations in " using model independent … scaling techniques including the peaks of probability … density functions (PDFs)…
Pelagic longline and trawl fisheries are known to kill large numbers of albatrosses worldwide. However, the impact on individual species and populations has rarely been assessed, often … because many albatross species are difficult to identify. Shy albatrosses (Thalassarche … cauta)…
There are a range of chemical contaminants of concern in Antarctic marine environments as a … result of the activities of humans, including past waste disposal practices and accidental fuel … spills. Environmental guidelines for contaminants, including targets for contaminated site … remediation…
Super Dual Auroral Radar Network (SuperDARN) HF backscatter radaras scan 16 beam directions over a field of view of ~52°. In the common mode of operation, data is collected using 45-km range gates and 7-s integrations on each beam.
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-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…
Techniques to calculate sea ice thickness from measurements of sea ice freeboard from … spacebome radar and laser altimeters in the Arctic have the potential to be used in the … Antarctic. The conversion of freeboard, measured by the altimeter…
Ship-based observations of sea ice conditions have been collated from 89 voyages to the … Antarctic pack ice, between 1980 and 2005. These data were collected primarily by … Russian, Australia, US…
Since the 1990s there has been a period of rapid climate warming in Europe. Long-term broad scale … datasets coupled with time series at specific locations for rocky intertidal species dating back to the 1950s … have been collected in Britain and Ireland. Resurveys of the original locations in 2001…
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.
AB: Hydroxyl (6-2)-band rotational temperature observations have been accumulated at Davis station, Antarctica (68°S, 78°E) over 12 consecutive years since 1995.
Total numbers of adult female southern elephant … seals (cows) breeding at Macquarie Island were … determined for 19 of the 52 year period between 1952 and … 2004. Totals for 1952-1987 (exc. 1959 and 1985)…
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…
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…
Water collection and treatment is often required for effective cold regions contaminated site clean-up. Large volumes of … meltwater runoff can become contaminated during remediation activities and disperse pollutants into the surrounding environment.
ABSTRACT: Environmental conditions experienced in early life affect growth and influence life history … strategies, especially in seasonal environments.
Background: Poorly preserved biological tissues have become an important source of DNA for … a wide range of zoological studies. Measuring the quality of DNA obtained from these samples is … often desired; however…
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:
We use line transect detection functions together with generalized linear and additive … models to estimate detection probability when detection on the line ("g(O)") may … not be certain.