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The influence of biotic and environmental variables on the abundance of virus-like … particles (VLP) and lysogeny was investigated by examining 10 Antarctic lakes in … the Vestfold Hills, Antarctica, in the Austral Spring.
The relationship between Ade´ lie Penguins (Pygoscelis adeliae) and ice is well … established, with sea ice influencing penguin populations through a variety of processes … operating at different spatial and temporal scales.
Pressure variations at 11 Antarctic and 7 Arctic sites show significant day-to-day correlations with a proxy for the … meteorological generators (thunderstorms and strongly electrified clouds) of the atmospheric circuit. The proxy is … derived from electric field measurements at Vostok (78.5ºS…
Pressure variations at 11 Antarctic sites and 7 Arctic sites have been examined and … show significant correlations with a daily proxy for the output of the meteorological … generators of the global atmospheric circuit.
The role played by Southern Hemisphere sea-ice in global climate is explored using an … Earth system climate model of intermediate complexity.
A high-resolution, offline ocean general circulation model, incorporating a realistic parameterization of … mixed layer convection, is used to diagnose pathways and time scales of Southern Hemisphere intermediate, mode, and lower thermocline water ventilation.
The coupled ocean–atmosphere–ice response to variations in the Southern Annular Mode (SAM) is … examined in the National Center for Atmospheric Research (NCAR) Community Coupled Climate Model … (version 2).
Neutron monitors are integral detectors of secondary cosmic rays. Since each of them … has its own detection efficiency, energy spectra cannot readily be derived from their … observations. To circumvent this problem…
The application of blue-dye to fishing baits is a seabird bycatch mitigation technique used … in some pelagic longline fisheries that is thought to make the baits less visible and hence … less attractive to seabirds. We tested this assumption in two ways. First…
Modelled 10Be production by solar cosmic ray (SCR) events is compared with measured 10Be concentrations … in a Law Dome snow pit record. The snow pit record spans 2.7 years, providing a quasi-monthly 10Be … sampling resolution which overlaps with the SCR events of 29 Oct 2003 and 20 Jan 2005.
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.
Studies of atmospheric composition in the Southern Ocean and Antarctic region continue to … reveal new findings which have a wide relevance. This presentation will show and interpret … records of the major greenhouse and related trace species from a network of measurement … sites across the region…
Earthquakes occur in Antarctica. The previously held notion that Antarctica is … essentially aseismic has been disproved by using records from established Global … Seismic Network stations and recently deployed temporary stations on the Antarctic … continent. However…
A barotropic tidal model has been applied to the Amery Ice Shelf cavity and Prydz … Bay region of East Antarctica. The sensitivity of the tidal solution of the model to … variation of the water column thickness of the Amery Ice Shelf cavity has been … determined.
Abstract. The annual formation and loss of some 15 million km2 of sea ice around the Antarctic significantly affects … global ocean circulation, particularly through the formation of dense bottom water.As one of the most profound seasonal … changes on Earth…
We carried out a comparative study using mtDNA (COI) for two free-living, endemic, terrestrial invertebrate taxa—the springtail Gomphiocephalus hodgsoni (Hypogastruridae) and the mite Stereotydeus mollis (Penthalodidae) collected from sites throughout Victoria Land and the Queen Maud Mountains…
Atmospheric ionization by solar protons has traditionally been … modeled using top-of-atmosphere (TOA) particle fluxes measured … by near-Earth spacecraft, and as a consequence have been … restricted to particle energies below ~500 MeV. However…
Abstract Isotoma klovstadi Carpenter, 1902 was one of … the first Collembola described from the Antarctic continent. It was first collected in November 1899 during the … British Antarctic Expedition on the north coast of Victoria … Land in the Ross Sea region.
Human-induced changes to natural systems can cause major disturbances to fundamental … ecological and population processes and result in local extinctions and secondary contacts … between formerly isolated species. Extensive fur seal harvesting during the nineteenth … century on Macquarie Island…
the glaciation and isolation of the Antarctic continent completed by ~10 million years ago, and not by the sequential break-up of Gondwana (completed by ~32 million years ago). More recently…
Repeated exposure to human activity can change the behavioural response of wildlife, having … implications for management.Weddell seals (Leptonychotes weddellii) breeding close to Antarctic research … stations are easily accessible and regularly visited by people.
Abstract. An eddying global model is used to study the characteristics … of the Antarctic Circumpolar Current (ACC) in a … streamline-following framework. Previous model-based estimates … of the meridional circulation were calculated using … zonal averages:
We reexamine the relationship between circulation, bathymetry, and surface … chlorophyll in the Southern Ocean, using new high-resolution maps of the frontal structure … of the Antarctic Circumpolar Current (ACC) derived from satellite altimetry.
Clean sediment collected from O’Brien Bay, East Antarctica, was artificially contaminated with a mix of Special Antarctic Blend diesel fuel and lubricating oil and deployed in two uncontaminated locations (O’Brien and Sparkes Bays) and a previously contaminated bay (Brown Bay)…
Previous studies of impacted sites near Casey Station, Antarctica, have revealed elevated concentrations of metals and metalloids, particularly Cd, Cu, Fe, Pb, Sn and Zn in marine sediments. However…