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Understanding how ecological, environmental and geographic features influence population genetic patterns provides crucial insights into a species' evolutionary history, as well as their vulnerability or resilience under climate change. In the Southern Ocean…
Understanding basal processes across ice-sheet grounding lines is crucial in accurately modeling ice-sheet dynamics and estimating global sea-level rise. The grounding line, which demarcates the specific boundary between a grounded ice sheet and a floating ice shelf…
The 2017 ozone hole … developed in the first week of August and rose sharply to reach a peak size … in early September, this was then followed by a significant warming event … which reduced the overall areal extent of the ozone hole considerably.
Future changes in the boreal polar vortex under a climate change scenario are still a matter of debate in the scientific community. For example, there is a lack of consensus among models about possible future changes in the frequency of major stratospheric warmings.
The Aurora and Wilkes Subglacial Basins are major features of East Antarctica, containing significant regions below sea level. Before the International Polar Year (2007-9), the … extent and geology of the basins were poorly constrained by geophysical data. The IPY project…
Schooling behaviour of Antarctic krill was induced repeatedly over a period of one year in the Australian … Antarctic Division research aquarium. The details of the laboratory setup suitable for krill to school are … described.
The geographic distribution, stocks and vertical profiles of phytoplankton of the seasonal ice zone off … east Antarctica were determined during the 2005–2006 austral summer during the Baseline Research … on Oceanography, Krill and the Environment-West (BROKE-West) survey.
Arctic and Antarctic tropopause is formed under extreme climate … conditions, both in troposphere and stratosphere. In the troposphere, distribution of orography, ice sheet and stationary atmospheric centres of … action is distinct.
We applied a multivariate statistical modelling technique called boosted regression trees to derive relationships between environmental conditions and the distribution of the adult stage of the cyclopoid copepod Oithona similis in the Southern Ocean.
The zonal anomalies data in total ozone and thermal tropopause height … shows that ozone depletion during austral spring has a strong influence on … the height and sharpness of the tropopause over West Antarctica.
A magnetic cloud in the solar wind impinged the Earths magnetosphere on the 7th January … 2005. Episodic enhancements in the coupling of solar wind energy initiated a familiar sequence … of Geospace events including a succession of substorms of increasing intensity throughout the … day.
An extraordinary sea ice tongue developed near 85E over a period of 30 days in … April–May 2002. The ice tongue extended to the north more than 800 km from the … surrounding ice edge and covered an area greater than 200,000 km2.
Analysis of zonal anomalies in total ozone and thermal tropopause height shows … that ozone depletion during austral spring has a strong influence on the height … and sharpness of the tropopause over West Antarctica. The seasonal change of tropopause … peak height occurs between 9 km…
The dual HF radars comprising the Tasman International … Geophysical Environment Radar (TIGER) system … often observe localized high-velocity F-region plasma flows … (1500 m/s) in the midnight sector (20:00–02:00 MLT) at … magnetic latitudes as low as 3=60 S.
Law Dome, in coastal East Antarctica, is a relatively low-latitude site (6646S) with a strong maritime … climate, dominated by cyclonic precipitation which produces high snow accumulation rates and very … well-resolved ice core records.
Length-at-age data for Patagonian toothfi sh (Dissostichus eleginoides) at Heard Island … (Division 58.5.2) were fi tted using a von Bertalanffy (VB) growth model taking into … account response-biased sampling of fi sh that were aged. Subsampling of random lengthfrequency … (LF)…
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.
The isotopes of nitrate, which show different dynamics than nitrate concentration during physical transport and nitrate assimilation, provide a complementary constraint in the effort to understand nutrient transport and biogeochemical fluxes in the Southern Ocean. For instance…
Oceanographic and seismic observations of the ocean beneath the Amery Ice Shelf, taken … over several seasons, describe a general pattern consistant with an “ice pump” mechanism. The ice pump is a general description of the thermohaline circulation under ice shelves.
A real-time video camera probe was deployed in a hot-water drilled borehole through the … Amery Ice Shelf, East Antarctica, where a total ice thickness of 480m included at least 200m of basal … marine ice.