Publications matching your search query
Results 251 to 275 of 299
Common geological, geochemical, and geophysical characteristics of continental fragments of East … Gondwana and adjacent oceanic lithosphere define a long-lived, low-volume, diffuse alkaline magmatic … province (DAMP) encompassing the easternmost part of the Indo-Australian Plate, West Antarctica…
Antarctic ice is an archive of evidence of climatic conditions and natural phenomena in the … Southern Hemisphere that extends approximately one million years into the past. We can … sense changes through the concentration of atmospheric gases, stable isotope ratios, terrestrial dust levels…
Monitoring includes both targeted studies designed to verify the predicted effects of specific … activities and more exploratory studies designed to detect “unknown” or unpredicted impacts. In the marine environment monitoring typically begins with an empirical experiment or survey…
An air-borne radio echo sounding survey was conducted over the Amery Ice Shelf, East … Antarctica, in December 2003. Nine transverse profiles were obtained approximately normal … to the flow direction, together with one longitudinal profile for a total length of flight lines of … about 1000 km.
Numerical simulations and laboratory experiments confirm my initial research hypothesis stating that dense water cascading down a submarine canyon induces localised upwelling of deeper water onto the shelf. This process, not described before…
Ice-core records are a key resource for reconstructing Antarctic climate. However, a … number of physical processes preclude the simple interpretation of ice-core properties such as oxygen … isotopic ratios in terms of climate variables like temperature or sea-level pressure. We show that welldated…
The dynamics of animal populations are determined by several key demographic parameters, which vary over time with resultant changes in the status of the population. When managing … declining populations, the identification of the parameters that drive such change are a high priority…
The Australian Antarctic Division is responsible for management of 42% of the Antarctic continent, equivalent to 3/4 the size of Australia. Management of such a large and remote area creates many practical difficulties…
A two-day workshop was held at the Australian Academy of Sciences to discuss how reconstructions of past climate change might be better applied to modelling future potential climate change. Recommendations included: (1)…
South Georgia (540S; 380W) lies 350 km south of the Polar Front in the south-west Atlantic Ocean. It is a key global location for albatrosses: at the last all-island census in 1986, it was estimated that approximately 92,500 pairs of grey-headed albatrosses (most important global site), 101…
Bycatch of seabirds during longline fishing operations is listed under Australian legislation as a key threatening process which could endanger 14 species of seabirds. In 1998 a Threat Abatement Plan (TAP) was finalised to manage this threat.
Seasonal changes in the photosynthetic and photoprotective pigment content of three species of Antarctic moss; Grimmia antarctici, Bryum pseudotriquetrum and Ceratodon purpureus were explored in relation to a range of environmental variables over the growing season in the Windmill Islands…
The influence of irradiance and iron (Fe) supply on phytoplankton processes … was investigated, north (47S, 142E) and south (54S, 142E) of the Subantarctic Front in … austral autumn (March 1998). At both sites, resident cells exhibited nutrient stress (F v / … Fm 0.3).
We have obtained wide-field thermal infrared (IR) images of the Carina nebula, using the SPIREX/Abu telescope at the … South Pole. Emission from polycyclic aromatic hydrocarbons (PAHs) at 3.29um, a tracer of photodissociation … regions (PDRs)…
This is a report containing results of desk studies and field investigations at Cape Denison produced for the AHC as a result of a National Estate Grant awarded to the authors in 1995. The Terms of Reference define three main areas of outcomes: 1.