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Factors affecting the breeding performance of Antarctic blue-eyed shags Phalacrocorax atriceps
1 January, 1986
The breeding performance of Blue-eyed shags of known age (up to 12 yr old) was studied on Signy Island, South Orkney Islands for three seasons. Mate change between seasons was…Flow of the Brunt Ice Shelf, Antarctica, derived from Landsat images, 1974–85
1 January, 1986
Satellite images recorded in 1973, 1974, and 1985 of the Brunt Ice Shelf are compared. There are sufficient identifiable features moving with the ice shelf to show flow patterns over…Read more on Flow of the Brunt Ice Shelf, Antarctica, derived from Landsat images, 1974–85
Multispectral digital image mapping of Antarctic ice features
1 January, 1986
Landsat multispectral images of the Antarctic ice sheet have been digitally enhanced by the US Geological Survey to show ice surface features not seen in earlier photographic products of the…Read more on Multispectral digital image mapping of Antarctic ice features
The selection of conservation areas in Antarctica: An example using the arthropod fauna of Antarctic islands
1 January, 1986
Four conservation areas in the maritime Antarctic (three Specially Protected Areas and a Site of Special Scientific Interest) are compared with neighbouring islands which have not been awarded similar conservation…Differences between swarms of Antarctic krill and some implications for sampling krill populations
1 January, 1986 by Jonathan Watkins
Antarctic krill, Euphausia superba Dana, were sampled from 28 discrete swarms in a small area south west of Elphant Island, South Shetlands, over a period of 14 d (24 February-9…Implications of tde form of the flow law for vertical velocity and age–Depth profiles in polar ice
1 January, 1986 by Eric Wolff
Two situations are studied in relation to the flow law of polar ice. In each case, models are used with a flow-law exponent of one, and with the more traditional…Plasma waves and wave—particle interactions seen at the UKS spacecraft during the AMPTE artificial comet experiment
1 January, 1986
Wave and particle correlator experiments on board the UKS revealed a wide range of plasma wave and wave-particle interactions associated with the 27 December 1984 artificial comet release just outside…Survival and water loss in some Antarctic arthropods
1 January, 1986 by Roger Worland, William Block
Seven species of Antarctic micro-arthropods (4 mites and 3 collembolans) were examined to determine their resistance to dehydration and their survival under dry conditions. Water loss at r.h. 5% at…Read more on Survival and water loss in some Antarctic arthropods
Calorific values and elemental analysis of eleven species of oceanic squids (Mollusca:Cephalopoda)
1 November, 1985 by Andrew Clarke
Cephalopods may be divided into five types according to their buoyancy. Members of several families such as the Octopodidae, Loliginidae and Ommastrephidae are negatively buoyant and must swim to stay…Lipid biochemistry and reproductive biology in two species of Gammaridae (Crustacea: Amphipoda)
1 September, 1985 by Andrew Clarke
Gammarus oceanicus Segerstråle, 1947 and Echinogammarus marinus (Leach, 1815) were sampled during the breeding season from Oslofjord in 1984, and their lipid composition examined in relation to reproductive condition. In…Large losses of total ozone in Antarctica reveal seasonal ClOx/NOx interaction
1 May, 1985 by Jonathan Shanklin
Recent attempts to consolidate assessments of the effect of human activities on stratospheric ozone (O3) using one-dimensional models for 30° N have suggested that perturbations of total O3 will remain…Read more on Large losses of total ozone in Antarctica reveal seasonal ClOx/NOx interaction
Reconnaissance gravity and aeromagnetic surveys of the Antarctic Peninsula
1 January, 1985
This report was originally issued with paper copies of two map sheets, showing Bouger anomaly and aeromagnetic anomaly contours. They have not yet been digitised. These maps were also published…Read more on Reconnaissance gravity and aeromagnetic surveys of the Antarctic Peninsula
Effects of phosphate on the contractile properties of fast and slow muscle fibres from an Antarctic fish.
1 January, 1985
Single fast myotomal fibres and small bundles of slow fibres (from the adductor pectoralis profundus muscle) were isolated from the Antarctic teleost Notothenia neglecta. Fibres were skinned by a brief…Egg formation and the pre-laying period of Black-browed and Grey-headed Albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
1 January, 1985
Egg composition and factors influencing egg formation were studied in Black‐browed and Grey‐headed Albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia. At nests where eggs were laid,…Mites of the genus Eupodes (Acari, Prostigmata) from maritime Antarctica: a biometrical and taxonomic study
1 January, 1985
A series of 40 male and 40 female mites of the prostigmatid genus Eupodes from the maritime Antarctic were each scored for 58 morphological characters, and principal co‐ordinate analyses were…Variable frequency VLF signals in the magnetosphere: Associated phenomena and plasma diagnostics
1 January, 1985
Coherent variable frequency signals (ramps) extending from 1 to 8 kHz, injected into the magnetosphere from Siple Station, Antarctica (L=4.3) exhibit upper and lower cutoffs when received at the conjugate…A new VLF method for studying burst precipitation near the plasmapause
1 January, 1985
VLF signals in the 2–4 kHz range transmitted from Siple Station, Antarctica (L ∼ 4.3), and received at various Antarctic locations have been used to detect the occurrence of burst…Read more on A new VLF method for studying burst precipitation near the plasmapause
Studies of the radiation budget anomalies over Antarctica during 1974–1983, and their possible relationship to climatic variations
1 January, 1985
We present the results of a study of anomalies, which are defined as differences of seasonal means from the data set seasonal means, in the Earth's radiation budget from the…Estudio de la Edad en una población virginal de Notothenia gibberifrons (Pisces:Nototheniidae) de Bahia South, Antartica
1 January, 1985
The age of individuals Notothenia gibberifrons Lönnberg was determined for a sample from an unexploited population collected at South Bay ,Palmer Archipelago. Elsewhere in the Antartic this species has been…The structural evolution of George VI sound, Antarctic Peninsula
1 January, 1985
George VI Sound, 400 km long and between 25 and 90 km wide, separates Alexander Island from the Antarctic Peninsula. The straight parallel sides of its northern section and sub-parallel…Read more on The structural evolution of George VI sound, Antarctic Peninsula
Lower Cretaceous inoceramid bivalves from the Antarctic Peninsula region
1 January, 1985 by Alistair Crame
The occurrence of rich faunas of Lower Cretaceous inoceramid bivalves in the Antarctic Peninsula region further emphasizes their widespread distribution, and enhances their potential for regional biostrati-graphic correlations. The Antarctic…Read more on Lower Cretaceous inoceramid bivalves from the Antarctic Peninsula region
Fur seal diving behaviour in relation to vertical distribution of krill
1 January, 1985
Quantitative studies of predator-prey interactions depend on a knowledge of their spatial dynamics and behaviour. Studies on marine vertebrates have hitherto been precluded by the difficulty of acquiring the relevant…Read more on Fur seal diving behaviour in relation to vertical distribution of krill
The diet of the Southern rockhopper penguin Eudyptes chrysocome chrysocome at Beauchene Island, Falkland Islands
1 January, 1985 by Peter Ward
The diet of the Southern rockhopper penguin at Beauchene Island, Falkland Islands, was studied in the early chick‐rearing period by quantitative analysis of adult stomach contents. Juvenile squid (Teuthowenia sp.)…Trace elements in Antarctic air and snowfall
1 January, 1985
Measurements of trace elements in snow and ice are frequently used to describe past atmospheric composition although there is no firm basis for assuming a direct connection. Trace-element concentrations have…Flow law for ice in polar ice sheets
1 January, 1985 by Eric Wolff
Theories of glacier flow are based commonly on the assumption that ice is not a newtonian fluid, but has a non-linear stress-dependent viscosity1–5. Here we re-examine the spreading of Antarctic…Spatial structure of high latitude sporadic E
1 January, 1985
Observations of high latitude types of sporadic E, Es, have been made at Halley, Antarctica (76°S, 27°W; L = 4.2) using a modern digital ionosonde with a direction finding capability.…