Publications matching your search query
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Dome C, Antarctica (75 S, 123 E; 3250 meters) is one of the coldest and driestlocations on Earth, with exceptionally low winds throughout the atmosphere. It therefore has the potential to be an ideal site for astronomical observations.
Long-term studies at Bird Island, South … Georgia, show that numbers of wandering, black-browed … and grey-headed albatrosses have been decreasing … since the late 1970s. To determine the status of the total … South Georgia population…
Industrial longline fisheries are considered worldwide as the main threat to albatross and … petrel populations, particularly at open oceans. However, inside countries’ EEZ artisanal … fleets account for a significant fishing effort and eventually…
Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles … detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy.
Measuring the geo-electric field becomes important in understanding the global electric circuit and how it is affected by other phenomena. It is also useful in assessing how the global electric circuit variations can affect climate.
ABSTRACT: Foraging movements of Adélie penguins are constrained both by environmental conditions … (e.g. sea ice cover) and life history factors (e.g. regular offspring provisioning). We describe … within season changes in foraging range…
(DMSP) in a variety of sea ice and seawater habitats in the Antarctic Sea Ice Zone (ASIZ) during spring and summer. Sixty-two sea ice cores of pack and fast ice were collected from twenty-seven sites across an area of the eastern ASIZ (648E to 1108E; and the Antarctic coastline north to 628S).
In many temperate regions, fuel and oil spills are sometimes managed simply by allowing natural degradation to … occur, while monitoring soils and groundwater to ensure that there is no off-site migration or on-site impact.
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.
A superposed epoch analysis of variations of the vertical electric field measured at Vostok (78.51S, 1071E; magnetic … latitude 83.61S) during 1998–2002 heliocentric current sheet (HCS)…
Polar Mesosphere Summer Echoes (PMSE) were detected above the high-latitude station Davis, Antarctica (68.61S) using a 55MHz atmospheric radar during the 2003–2004 austral summer. In this paper…
The calving activity of the Antarctic ice shelves is one of the major indicators of global climate change. Whereas massive calving events are well observed post factum from satellites, ice rifting and ice shelf breaks of smaller volumes are not monitored and statistically analysed.
Using a recent 22-yr (1979–2000) record of the NCEP–Department of Energy (DOE) reanalysis 2 dataset … (hereafter, NCEP2 reanalysis) and a two-level spherical quasi-geostrophic, quasi-linear model, the eddy–zonalmean … flow interactions associated with the Southern Hemisphere annular mode (SAM)…
The seasonal cycle of atmospheric N2O is derived from a 10-yr observational record at Cape Grim, Tasmania (41◦S, 145◦E). After correcting for thermal and stratospheric influences…
[1] The north-south asymmetry of the amplitude of ULF pulsations in the Pc 3–5 band is … studied using magnetic field data from the magnetically conjugate stations at L ~5.4: Kotzebue (KOT) in the northern hemisphere and Macquarie Island (MCQ) in the southern … hemisphere.
The focus of this study was the distribution of … adult female Weddell seals during winter at the Vestfold … Hills. Satellite tracking of Weddell seals had never been … done before at this location. Hence, this was a pilot … study to evaluate the following methods.
Population counts are useful for monitoring populations as they can indicate both the ecological history and the present condition of a population.
Molecular techniques have recently been used to identify prey in the scats of pinnipeds. This new approach has developed in an attempt to overcome some of the inadequacies of traditional diet assessment methods.
To examine the potential of lipids as dietary markers in Euphausia superba Dana, juvenile … krill were fed 4 phytoplankton diets (diatoms, cryptomonads, dinoflagellates and thraustochytrids … over a range of food concentrations) and 2 species of zooplankton (rotifers and Artemia sp.) for 20 d.
Global thunderstorm activity maintains a variable potential difference … of the order of 250 kV between the quasi-equipotentials of the lower … reaches of the ionosphere and the Earth.
The abundance of small faecal pellets is high in marine waters. Little is known, however, about the processes governing their production and fate in the water column. We investigated faecal pellet production and flux in relation to the phytoplankton and copepod assemblages present in Ellis Fjord…
Induction magnetometer data recorded at three closely spaced sites (110km) in Antarctica (mlat -75°) have been examined for ionospheric signatures of the outer magnetosphere and cusp/cleft regions. Cross-phase analysis of the 1–10 mHz band…
The Protocol on Environmental Protection to the Antarctic Treaty (the Madrid Protocol) introduces the requirement to plan and conduct activities to avoid or minimise degradation of the wilderness and aesthetic values of Antarctica.