Our publications
Filtered view: Research papers
Showing 11205 items
The effects of differential ion flows on EISCAT observations in the auroral ionosphere
1 January, 1984 by Richard Horne
During geomagnetic storms different partial pressure gradients in the auroral ionosphere may result in H+, He+, O+ and molecular ions drifting with different velocities along the Earth's magnetic field line.…Read more on The effects of differential ion flows on EISCAT observations in the auroral ionosphere
Breeding biology and population dynamics of giant petrels Macronectes at South Georgia (Aves: Procellariiformes)
1 January, 1984
The breeding biology and population dynamics of the two species of giant petrels, Macronectes halli and M. giganteus, were studied at Bird Island, South Georgia during 1978–81. The mean laying…Moult of the giant petrels Macronectes halli and M. giganteus at South Georgia
1 January, 1984
Moult scores were collected from colour‐ringed individuals of known reproductive status of the two species of giant petrel, Macronectes halli and M. giganteus, at Bird Island, South Georgia between 1978–81.…Read more on Moult of the giant petrels Macronectes halli and M. giganteus at South Georgia
Movements of giant petrels Macronectes spp. ringed at South Georgia
1 January, 1984
More than two hundred recoveries of giant petrels Macronectes halli and M. giganteus originally ringed at Bird Island, South Georgia, were analysed to determine the nature of any interspecific differences…Read more on Movements of giant petrels Macronectes spp. ringed at South Georgia
The effect of temperature on the growth of Candida saké isolated from the leaves of a subantarctic grass
1 January, 1984
During a survey of microfungi on the subantarctic island of South Georgia, large numbers of phylloplane yeasts were isolated in late spring from leaves of a tussock grass. The dominant…Diving depths of the Chinstrap Penguin Pygoscelis antarctica
1 November, 1983
Diving depths of four breeding chinstrap penguins were recorded throughout complete foraging trips to sea lasting 18-48 h at Signy Island, South Orkney Islands. Deeper dives reached 70 m but…Read more on Diving depths of the Chinstrap Penguin Pygoscelis antarctica
The influence of tectonic boundaries on geomagnetic variations in the Scotia Sea
1 January, 1983
Geomagnetic variation fields recorded at a particular location can be analysed to provide information on the distribution of induced currents within the Earth. An analysis of the variation fields on…Read more on The influence of tectonic boundaries on geomagnetic variations in the Scotia Sea
Low temperature adaptations in beetles from the Sub-Antarctic Island of South Georgia
1 January, 1983 by William Block
Adaptations to the Sub-Antarctic climate of South Georgia were studied in four species of Coleoptera. in larvae and adults of Hydromedion sparsutum and Perimylops antarcticus (Perimylopidae) collected during summer, the…Read more on Low temperature adaptations in beetles from the Sub-Antarctic Island of South Georgia
Experimental studies on supercooling in two Antarctic micro-arthropods
1 January, 1983
Samples of mites and Collembola which had been acclimated at 5°C and provided with natural foods were cooled at four constant cooling rates: 1, 12 , 14 , 18deg min−1…Read more on Experimental studies on supercooling in two Antarctic micro-arthropods
Towards an energy budget for krill: The physiology and biochemistry of Euphausia superba Dana
1 January, 1983 by Andrew Clarke
Published data on the oxygen consumption, nitrogen excretion, feeding, growth and moulting physiology of the Antarctic krill, Euphausia superba, are reviewed with particular reference to experimental methodology and the value…Energy costs of incubation in the Wandering Albatross Diomedea exulans
1 January, 1983
The role of the sexes in incubation, their changes in body weight and associated energy costs were studied in the Wandering Albatross at South Georgia. Males incubate significantly more than…Read more on Energy costs of incubation in the Wandering Albatross Diomedea exulans
Sr, O, and Pb isotope evidence for origin and evolution of Etive Igneous Complex, Scotland
1 January, 1983
A multi-isotope approach has been applied to the origin of one of the largest and latest Newer Granite complexes of the Scottish Caledonides. Contributions from both mantle and unexposed late…The occurrence of the Upper Jurassic bivalve Malayomaorica malayomaorica (Krumbeck) on the Orville Coast, Antarctica
1 January, 1983 by Alistair Crame
Malayomaorica malayomaorica is an important Upper Jurassic bivalve in the southern hemisphere: widely distributed in strata of Early - Middle Kimmeridgian age, it is a zone fossil of considerable potential…Fecundity, survival and site fidelity in Weddell seals, Leptonychotes weddelli
1 January, 1983
Age-specific fecundity data are presented for 17 yr of tagging and recapture of Leptonychotes weddelli at Signy Island, South Orkney Islands. Minimum age of first pupping was 2 yr, mean…Read more on Fecundity, survival and site fidelity in Weddell seals, Leptonychotes weddelli
Water flux and estimated metabolism of free-ranging gentoo and macaroni penguins at South Georgia
1 January, 1983
Water turnover rates were measured in gentoo and macaroni penguins breeding sympatrically on South Georgia Island. At the time of this study, adult male macaronis were attending the nest while…The accuracy of simple methods for determining the height of the maximum electron concentration of the F2-layer from scaled ionospheric characteristics
1 January, 1983
The techniques for estimating hmF2 from M(3000)F2 are reviewed with particular stress put upon those in which the effects of underlying ionization are accounted for by a correction (ΔM) to…Radio studies of the main F region trough in Antarctica
1 January, 1983
Case studies of the equatorward movement of the main F region trough are presented, using data recorded by a digital ionospheric sounder located at Halley Bay (76°S, 27°W; Λ =…Read more on Radio studies of the main F region trough in Antarctica
Krill
1 January, 1983
This series of papers comprises contributions to a symposium on the geography of the Falkland Islands, held at the Royal Geographical Society on 18 May 1982, with Lord Shackleton in…Concentric fungal rings in antarctic moss communities
1 January, 1983
Certain Antarctic moss communities often have a pattern of concentric arcs or rings on their surfaces which can be up to 5 m in diameter. These are caused by fungal…Read more on Concentric fungal rings in antarctic moss communities
Whistler duct lifetimes
1 January, 1983
The lifetime of whistler ducts is determined in view of whistler data recorded over a 3-hour period at Sanae and Halley (L = 3.98 and 4.24, respectively) in South Africa,…Nutrients and their effects on phytoplankton populations in lakes on Signy Island, Antarctica
1 January, 1983
Seasonal changes in nutrient concentrations, phytoplankton biomass and nutritional state were followed in two contrasting Antarctic lakes. Oligotrophic Sombre Lake receives little phosphate from its catchment and this limits the…Hostilities in the Falkland Islands Dependencies March–June 1982
1 January, 1983
My short note in an earlier issue of Polar Record [21(133): 394–95 (1983)] outlined events in the Falkland Islands Dependencies arising from the Argentinian attack and occupation of April 1982,…Read more on Hostilities in the Falkland Islands Dependencies March–June 1982
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia
1 January, 1983
Giant petrels are the chief scavenging seabirds in the Southern Ocean. Quantitatively analysed regurgitations from chicks of both Macronectes halli and M. giganteus at Bird Island, South Georgia throughout the…Henry’s Law constants and the air-sea exchange of various low molecular weight halocarbon gases
1 January, 1983
The McAuliffe (1971) multiple equilibration technique has been used to measure the Henry's Law constants (H) for a variety of low molecular weight halocarbon gases in distilled and sea waters…Association between Chrysosporium pannorum and Mucor hiemalis in Poa flabellata litter
1 January, 1983
Mucor hiemalis was frequently isolated from the litter of Poa flabellata where it apparently grows as a secondary sugar fungus in association with Chrysosporium pannorum.Read more on Association between Chrysosporium pannorum and Mucor hiemalis in Poa flabellata litter
Morphometric and ultrastructural features of the ventricular myocardium of the haemoglobin-less icefish Chaenocephalus aceratus
1 January, 1983
1. The relationship between heart ventricle weight and body weight has been determined for three species of Antarctic fish with respiratory pigments (Notothenia gibberifrons, Notothenia neglecta and Notothenia rossii) and…Source of saturnian myriametric radiation
1 January, 1983
The Voyager 1 and 2 flybys of Saturn revealed the presence of a variety of plasma waves associated with Saturn's magnetosphere1,2, some electrostatic in nature, others apparently electromagnetic. Possibly the…Characteristics of VLF emissions manifested by their cross-spectral phase information
1 January, 1983
Natural VLF emissions received by a single antenna can be characterised at each point in the emissions' frequency-time domain by a power and a phase. Emissions received at a single…Read more on Characteristics of VLF emissions manifested by their cross-spectral phase information
In situ measurements of transionospheric VLF wave injection
1 January, 1983
VLF waves at 3.85 kHz from the Siple, Antarctica, transmitter were continuously measured by electric and magnetic receivers on a sounding rocket as the waves propagated through the neutral atmosphere…Read more on In situ measurements of transionospheric VLF wave injection
Sediment dispersal patterns in part of a deformed Mesozoic back-arc basin on South Georgia, South Atlantic
1 January, 1983
The Cumberland Bay Formation is a deformed Late Jurassic-Early Cretaceous volcaniclastic turbidite formation several kilometers thick. It has been interpreted as the fill of a back-arc basin which was active…Activity budgets of southern elephant seals, Mirounga leonina, during the breeding season
1 January, 1983
Elephant seals, Mirounga leonina, of both sexes undergo a prolonged fast during the breeding season when they rely on their reserves of blubber for energy. Activity patterns were observed in…Some aspects of feeding in the Antarctic krill, Euphausia superba
1 January, 1983 by Andrew Clarke, Peter Ward
The interaction between feeding activity, swarming behaviour and vertical migration in Antarctic krill, Euphausia superba Dana, was examined by a combination of laboratory physiology studies and intensive field sampling of…Read more on Some aspects of feeding in the Antarctic krill, Euphausia superba
K-Ar geochronology of the South Shetland Islands, Lesser Antarctica: apparent lateral migration of Jurassic to Quaternary island arc volcanism
1 January, 1983
Approximately 70 K-Ar whole-rock ages for low-K tholeiitic and andesitic volcanic and intrusive rocks from the South Shetland Islands, Antarctica, including about 50 not previously published, are reviewed. Activity mainly…