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An Antarctic circumpolar wave (ACW) of 3- to-4-year period propagated eastward … around the Southern Ocean in covarying sea surface temperature (SST) and sea level … pressure (SLP) anomalies from 1983 through 1992…
There are very strong thermal gradients between the Antarctic continent and the … sea-ice zone, and between that zone and the ocean to the north. As a result of these contrasts … the sea-ice domain is one of strong cyclogenesis and high cyclone frequency.
: The KErguelen : Ocean and Plateau compared Study (KEOPS) examined the origin of elevated phytoplankton biomass over the Kerguelen plateau in the Southern Ocean in mid-summer (Jan. - Feb. 2005).
Surface carbon dioxide (CO2) observations are integral to understanding the role of the … Southern Ocean in the global carbon cycle, and to developing reliable predictions of … biogeochemical responses to altered climatic conditions. Carbon dioxide (CO2)…
Reduced reproductive success in flipper-banded King Penguins compared to unbanded … penguins has been reported but differences in survival were not found. The “worst-case” survival analysis done by previous researchers assumed that death occurred at the beginning … of the tail chain of absences.
Palaeolimnological studies of environmental change focusing on select species are useful, yet … cannot give information on changes in whole lake community structure and dynamics. Analysis of entire fossil zooplankton communities, in addition to interpretation of diatom…
Between November 2001 and March 2002 an Australian/Japanese collaborative study completed six passes of a transect … line in the Seasonal-Ice Zone (south of 621S) along 1401E. Zooplankton samples were collected with a NORPAC net on … 22–28 November, and a Continuous Plankton Recorder on 10…
Oversnow traverses have collected a variety of glaciological measurements around the interior drainage basin of the Lambert Glacier, East Antarctica (longitudes 54°-78°E, latitudes 67°-76°S), between 1989-90 and 1994-95.
Research and data collection over several years has allowed us to determine the best alternative energy option for Australian stations. This is to install a small number of large commercially available, minimally modified wind-turbines. They would be variable-speed, 280kW machines without gearboxes…
Elephant seals were immobilized intravenously with a mixture of tiletamine and zolazepam at a rate of 0.5 mg/kg. This provided a satisfactory degree of anaesthesia with no side effects. Induction, duration and recovery times were short which proved advantageous to researchers and animals.
The dive duration of 16 underyearling (6-12 months old) southern elephant seals during their second trip to sea was investigated using geolocating time-depth recorders. Underyearling seals had a lesser diving ability, with respect to duration and depth, than adult southern elephant seals.
Abstract A microbial enrichment culture tolerant of … petroleum hydrocarbons was developed from sediment … collected near Casey Station, Antarctica. To select coldadapted … microbes that would degrade diesel, enrichments … were cultured at 0°C during six successive … transfers to fresh medium…
The Adare Trough, located 100 km NE of Cape Adare, Antarctica, is the extinct third arm of a Tertiary spreading ridge that … separated East from West Antarctica. We use seismic reflection data, tied to DSDP Site 274…
There is much speculation over the role of frazil ice in both ocean cavities under ice shelves and in the adjacent ocean where Ice Shelf Water (ISW) plumes are found. Traditionally three-dimensional ocean circulation models have ignored this slurry of small, thin…
There is much speculation over the role of frazil ice in both ocean cavities under ice shelves and in the adjacent ocean where Ice Shelf Water (ISW) plumes are found. Traditionally three-dimensional ocean circulation models have ignored this slurry of small, thin…
In recent years there has been increasing interest in the role of frazil ice in ocean cavities … under ice shelves and in the adjacent ocean, where plumes of Ice Shelf Water (ISW), colder … than the sea-water surface freezing point, are observed. The development of frazil ice - suspensions of small…
In late 2004 a multi-national, interdisciplinary study coordinated by the Alfred Wegener … Institute for Polar and Marine Research, Germany, was carried out in the Western Weddell … Sea. A drifting station, Ice Station POLarstern [ISPOL] formed the core component of this … cruise…
The efforts of Patterson and co-workers (Murozumi et al., 1969) to accurately measure Pb … concentrations in Greenland and Antarctic snow and ice produced the first reliable … determination of Pb pollution of the Earth’s polar ice sheets. Since then…
In recent times there has been increasing interest in Sr as an isotopic tracer in environmental … studies. There is the potential to characterise dust inputs at a certain site by transport of … material from source areas if the isotopic compositions of the site and source areas are … known.
The internal structure of the Law Dome ice cap is being investigated by studying ice cores obtained from several sites along the summit - Cape Folger line. Profiles of measured physical properties for four of the ice cores from near the margin of the ice cap are presented.
Once again Antarctica is under threat with the proposal by Senator Barnaby Joyce to have mining sanctioned by the Australian Government. Dr Tracey Rogers, presenter of the 2006 J D Stewart Address at the University of Sydney Faculty of Veterinary Science…
The southern elephant seal (Mirounga leonina) population at Macquarie Island represents … about 10% of the world’s population. The number of adult females breeding at the island has … decreased substantially since the first whole island census was conducted in 1952.
Significant changes in zooplankton composition have occurred in various ocean systems in … recent years. These changes can be quite dramatic, occurring within one or two seasons, as … happened with the regime shift in the North Sea and North Atlantic in the late 1980s.
Four years of Rayleigh lidar and supporting radiosonde balloon data are used to study the … influence of wave activity on Polar Stratospheric Clouds (PSC) from an Eastern Antarctic … coastal site.
The collapse of the Larsen A and B and other ice shelves fringing the Antarctic Peninsula … coastline raises questions about the status of ice shelves in other parts of the continent. Are … the large ice shelves along the East Antarctic coast also in danger of permanent collapse…