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Infrared astronomy has made remarkable progress over the past quarter century. This paper, which is a brief summary of the 1999 Ellery Lecture, outlines the importance of … the infrared, traces some of the key Australian developments in the field…
As well as determining the amount of solar radiation available for photosynthesis, the surface reflectance and absorptance characteristics of plants are their first defence against damaging effects of solar radiation. The solar spectrum can be damaging to plants in many ways. At shorter wavelengths…
Quartz stone sublithic cyanobacterial communities are common throughout the Vestfold Hills, Eastern Antarctica (68 degrees S 78 degrees E) contributing biomass in areas otherwise devoid of any type of vegetation. In this study…
A line transect survey of the waters off East Antarctica (80°E-150°E; CCAMLR Division 58.4.1; IWC Areas IV &V) was conducted during January to March 1996 on the 5,000t icebreaker RV Aurora Australis. Cruise determining programs were a hydroacoustic survey to estimate Antarctic krill…
During the austral summer 1995/95 a cetacean sightings line transect survey was conducted on a platform of opportunity provided by Australian National Antarctic Research Expeditions krill hydroacoustic and oceanography survey of CCAMLR Division 58.4 (parts of IWC Area IV & V).
Surface sediments (0-25 cm) from Ace Lake (eastern Antarctica), a saline euxinic lake, were analyzed to study the early incorporation of reduced inorganic sulfur species into organic matter. The apolar fractions were shown to consist predominantly of dimeric (poly)sulfide linked C-27-C-29 steroids.
Eighteen paired sites (adjacent to vs away from sea bird nests) and six transects (downslope of nests) across Vestfold Hills were sampled for vegetation, soil nutrients, soil water content and percent rock cover. Three moss and 17 lichen species were recorded…
Creching emperor penguin (Aptenodytes forsteri) chicks were exposed to two overflights by a Sikorsky S-76, twin engine helicopter at 1000 m (3300 ft), a current operational guideline of the Australian Antarctic Division for helicopter activity in Antarctica.
In this paper we examine the geomagnetic signatures of solar wind impulses using magnetometer array data, a bistatic HF radar, and a co-located imaging riometer. The impulses were associated with 1.6mHz magnetic pulsations that were observed across a wide range of latitudes.
HF signals that propagate via the ionosphere may exhibit Doppler shifts due to a number of processes that give rise to a time dependent refractive index. This paper examines the role of ULF (1–100mHz) wave energy, incident from the magnetosphere, in causing Doppler shifts in HF signals.