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Rock moisture content in the field and the laboratory and its relationship to mechanical weathering studies
1 January, 1986
Rock moisture content is a major control of mechanical weathering, particularly freeze‐thaw, and yet almost no data exist from field situations. This study presents moisture content values for rocks, taken…The effects of temperature and moisture on dark respiration in the foliose lichen Umbilicaria antarctica
1 January, 1986
The dark respiration of field‐fresh thalli of Umbilicaria antarctica Frey et Lamb is reported for temperatures from −5.5 to 19°C, and water contents from saturation to dryness. Detailed analysis of…Further evidence for the ionospheric contribution to convection within the plasmasphere
1 January, 1986
VLF goniometers have been used to study the direction of plasma convection in the evening plasmasphere. The results suggest that sometimes even for L values greater than 4 the electric…Read more on Further evidence for the ionospheric contribution to convection within the plasmasphere
Reduction of ambiguities in HF radar results through a revised receiving antenna array and sounding pattern
1 January, 1986
The reconfiguration of both the receiver dipole array and the pulse set used by the National Oceanic and Atmospheric Administration (NOAA) HF radar enables all ambiguity in polarization to be…Io plasma torus and the source of jovian kilometric radiation (bKOM)
1 January, 1986
One of the many discoveries by Voyagers 1 and 2 during their flyby of Jupiter was the detection of radio emission at kilometric wavelengths1,2 in the frequency range 20–500 kHz.…Read more on Io plasma torus and the source of jovian kilometric radiation (bKOM)
Staphylococcus aureus in Antarctica: carriage and attempted eradication
1 January, 1986
The carriage of Staphylococcus aureus was studied in a group of 28 men living in a totally isolated environment for a year. Initially, nasal, axillary and perineal swabs were taken…Read more on Staphylococcus aureus in Antarctica: carriage and attempted eradication
Typing of strains of Staphylococcus aureus by Western Blot analysis of culture supernates
1 January, 1986
Extracellular proteins produced by Staphylococcus aureus strains were examined by Western Blot analysis with blood donor plasma as a source of antibodies. Comparison of epidemiologically related strains showed strong concordance…The relationship between dominance behaviour, bill size and age group in Greater Sheathbills Chionis alba
1 January, 1986
A dominance hierarchy developed within a wintering flock of Greater Sheathbills which fed regularly at a concentrated artificial food source. Each bir's dominance position was determined from the proportion of…Proximal to distal sedimentological variation in a linear turbidite trough: implications for the fan model
1 January, 1986
Determination of geographically dependent sedimentological variation (‘proximality’) in ancient flysch deposits formed an important part of early turbidite studies. Attempts to quantify this variation highlighted anomalies which were neatly resolved…Ductile thrusting within subduction complex rocks on Signy Island, South Orkney Islands
1 January, 1986
A model involving repeated NNW-directed ductile thrusting in subduction complex rocks on Signy Island. South Orkney Islands, accounts for the consistent NNW-trending alignment of fold axes, stretching and shearing directions.…Read more on Ductile thrusting within subduction complex rocks on Signy Island, South Orkney Islands
Oxygen consumption and nitrogen excretion in the Antarctic brachiopod Liothyrella uva (Jackson, 1912) under simulated winter conditions
1 January, 1986 by Andrew Clarke, Lloyd Peck
The metabolism of the Antarctic brachiopod Liothyrella uva (Jackson, 1912) has been investigated in the laboratory under simulated winter conditions of low temperature and no food. Under such conditions the…Antarctic aquatic ecosystems as habitats for phytoplankton
1 January, 1986
Summary 1. The Southern Ocean is a large‐scale, relatively homogeneous upwelling ecosystem whose phytoplankton apparently grows suboptimally over much of its area. By contrast there is a wide variety of…Read more on Antarctic aquatic ecosystems as habitats for phytoplankton
Some environmental factors influencing phytoplankton in the Southern Ocean around South Georgia
1 January, 1986
Data on phytoplankton and zooplankton biomass, and physical and chemical variables, are combined with a published multivariate description of diatom species composition to interpret variation within an area around South…Pelites of the Glen Urquhart serpentinite–metamorphic complex, west of Loch Ness (Anomalous local limestone–pelite successions within the Moine outcrop: III)
1 January, 1986
The c. 6 km2 complex comprises graphitic/pyritic, mainly kyanite-rich pelites, interbanded with metalimestones and invaded by foliated serpentinites. It is enveloped by typically Moinian psammites, semipelites and pelites. Previously regarded…The poleward edge of the mid-latitude trough—its formation, orientation and dynamics
1 January, 1986
Data from the Advanced Ionospheric Sounder (AIS) deployed at Halley, Antarctica (76°S, 27°W; L = 4.2) and the Dynamics Explorer-2 spacecraft (DE-2) are used to investigate several aspects of the…Read more on The poleward edge of the mid-latitude trough—its formation, orientation and dynamics
Observations of the effects of DPY currents at sub-auroral latitudes
1 January, 1986
Magnetograms from Lerwick, Scotland and Halley, Antarctica are used to show that the effects of the DPY current system can frequently be detected at these sub-auroral observatories. It is found…Read more on Observations of the effects of DPY currents at sub-auroral latitudes
Distribution of the early-life phase of the Antarctic squid Galiteuthis glacialis in relation to the hydrology of the Southern Ocean in the sector 15� to 30�E
1 January, 1986 by Paul Rodhouse
During R.R.S. “Discovery” Cruise 100 in the Southern Ocean (1979), 620 specimens of the Antarctic cranchiid squid Galiteuthis glacialis (Chun) were caught in the RMT8 opening-closing net, to the south…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
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.)…