Archives: Publications
Chemical evidence in polar ice cores from dielectric profiling
1 January, 1990 by Robert Mulvaney
The dielectric stratigraphy of a 130 m ice core from Dolleman Island, Antarctic Peninsula, shows large variations in the dielectric relaxation process and in conductivity. A comparison with the chemical…Read more on Chemical evidence in polar ice cores from dielectric profiling
A mixture theory for a phase-changing snowpack
1 January, 1990
The continuum theory of mixtures is used as the mathematical framework for a four-constituent model of a natural snowpack. The general conservation equations in point form are derived from appropriate…A theoretical determination of the characteristic equation of snow in the pendular regime
1 January, 1990
Recent mathematical models treat a natural snow-pack as a mixture body consisting of solid ice grains, liquid water, and a gas made up of air and water vapour. Such a…Quasi-periodic VLF emissions and concurrent magnetic pulsations seen at L = 4
1 January, 1990
The first observations are presented from Halley, Antarctica, of quasi-periodic (QP)_VLF intensity variations modulated at the frequency of concurrent Pc3 magnetic pulsations. Seen on broadband frequency-time plots, the QP emissions…Read more on Quasi-periodic VLF emissions and concurrent magnetic pulsations seen at L = 4
Deformation in an accretionary melange, Alexander Island, Antarctica
1 January, 1990
Alexander Island contains several belts of melange in a wide accretionary complex. One melange belt in the northwest of the island incorporates both oceanic and trench-fill material. It evolved by…Read more on Deformation in an accretionary melange, Alexander Island, Antarctica
The feeding ecology of larval fish in an Antarctic fjord, with emphasis on Champsocephalus gunnari
1 January, 1990 by Peter Ward
The vertical distribution of five species of fish larvae and their prey species was studied in late winter and summer at Cumberland East Bay, South Georgia. Prey type varied between…A preliminary study of benthic diatoms in contrasting lake environments
1 January, 1990
Eleven of the 17 freshwater lakes from Signy Island, South Orkney Islands, Antarctica were sampled by snorkel divers. A list of diatom taxa identified from benthic samples is presented. Most…Read more on A preliminary study of benthic diatoms in contrasting lake environments
The fine structure of an algal mat from a freshwater maritime antarctic lake
1 January, 1990
The three-dimensional microstructure of Tolypothrix mats from the bottom of a maritime antarctic lake of Signy Island, South Orkneys, was examined. Samples from mats at two depths, 4 and 6 m,…Read more on The fine structure of an algal mat from a freshwater maritime antarctic lake
Diel activity patterns of Carabidae, Staphylinidae and Perimylopidae (Coleoptera) at South Georgia, Sub-Antarctic
1 January, 1990
Six of the eight species of beetles at South Georgia, the southernmost beetles of the world, were investigated in outdoor arenas with pitfall traps for their diel patterns of locomotory…The Paleozoic and Andean magmatic arcs of West Antarctica and southern South America
1 January, 1990
The evolution of magmatic activity along the Pacific margin of southern South America and West Antarctica is considered in terms of the alignment, timing and petrogenesis of calc-alkaline granitoid emplacement.…Read more on The Paleozoic and Andean magmatic arcs of West Antarctica and southern South America
Seasonal variation in the cold hardiness of three species of free-living Antarctic nematodes
1 January, 1990
The physiological adaptations required to survive exposure to low temperatures must be of great importance in allowing nematodes to colonize extreme terrestrial environments, such as Antarctic fellfields. Seasonal variation in…Sea level changes at active plate margins: processes and products
1 January, 1990
A joint IAS/Geological Society of London meeting, organized by the British Sedimentological Research Group, was held in London at the Geological Society on 9-11 May 1989, to address the problem…Read more on Sea level changes at active plate margins: processes and products
High-paleolatitude Late Cretaceous paleotemperatures: New data from James Ross Island, Antarctica
1 January, 1990
Oxygen-isotope analysis of well-preserved macrofossils from the Santonian-Campanian of James Ross Island and the Maastrichtian of Vega Island, Antarctica, indicates that cool high-paleolatitude temperatures prevailed during the Late Cretaceous and…Variation of feeding by krill in swarms
1 January, 1990 by Jonathan Watkins
Gut fullness of 3264 Antarctic krill in 38 swarms was estimated using fluorometric determination of chlorophyll a . There was a very wide range of gut fullness (maximum value 3277…Body water content and desiccation resistance in some arthropods from subantarctic South Georgia
1 January, 1990 by Roger Worland, William Block
The body water content and resistance to desiccation were studied in two perimylopid beetles, Perimylops antarcticus and Hydromedion sparsutum, a chironomid midge, Eretmoptera murphyi, and two spiders, Notiomaso australis and…Lower thermospheric wind measurements near 60° Λ from 5577Å Doppler interferometry
1 January, 1990
Fabry-Perot interferometer measurements of the Doppler shift of the 5577Å O1S emission are used to derive neutral wind velocities at E-region altitudes over Halley, Antarctica (Λ=61°). These measurements, recorded during…Read more on Lower thermospheric wind measurements near 60° Λ from 5577Å Doppler interferometry
Spatial and temporal distribution of Antarctic fur seals (Arctocephalus gazella) on the breeding grounds at Bird Island, South Georgia
1 December, 1989
The number of Antarctic fur seals (Arctocephalus gazella) in the area of the Scotia Sea has been increasing. Observation of their distribution on the breeding grounds are important to help…Analyses of field moult data: prediction of intermoult period and assessment of seasonal growth in Antarctic krill, Euphausia superba Dana
1 December, 1989 by Jonathan Watkins
A technique for moult staging Antarctic krill (Euphausia superba Dana) was used in the analysis of field samples to predict intermoult periods and hence assess growth and the effects of…Problems in the identification of anthropogenic hydrocarbons against natural background levels in the Antarctic
1 December, 1989
Hydrocarbons in the environment occur as complex mixtures. The detection of low-level anthropogenic contamination can be difficult as many of the compounds can also be found in biogenic materials. Results…Acoustic sounding of the atmospheric boundary layer at Halley, Antarctica
1 December, 1989
The records obtained from a monostatic acoustic sounder run at Halley, Antarctica, have been analysed with the use of data from instruments on a 32 m mast and from radiosonde…Read more on Acoustic sounding of the atmospheric boundary layer at Halley, Antarctica
Measurements of total ozone using Dobson spectrometers: Some comments on their history
1 December, 1989
The Dobson ozone spectrometer has been used for studies of the ozone layer for about 60 years. It remains indispensable for assessing the accuracy of satellite-borne instruments. The steps which…Read more on Measurements of total ozone using Dobson spectrometers: Some comments on their history
Scaling patterns in the Antarctic brachiopod Liothyrella uva (Broderip, 1833)
1 December, 1989 by Lloyd Peck
Scaling patterns of shell thickness, shell volume, total animal volume, internal tissue volume and mantle cavity volume in the brachiopod Liothyrella uva (Broderip, 1833) were investigated in relation to shell…Read more on Scaling patterns in the Antarctic brachiopod Liothyrella uva (Broderip, 1833)
Chick feeding in the diving petrels Pelecanoides georgicus and P. urinatrix exsul
1 December, 1989
Chick feeding in common diving petrels (Pelecanoides urinatrix exsul) and South Georgia diving petrels (P. georgicus) was studied on Bird Island, South Georgia. Complete chick meals removed from the proventriculus…Read more on Chick feeding in the diving petrels Pelecanoides georgicus and P. urinatrix exsul
Distribution of six major copepod species around South Georgia during an austral winter
1 November, 1989
A net sampling survey was conducted around the island of South Georgia during July/August 1983. This study compares the age structure and vertical and horizontal distributions of the dominant copepods…Read more on Distribution of six major copepod species around South Georgia during an austral winter
Geomagnetic storms in the Antarctic F-region. II. Physical interpretation
1 November, 1989
The physical explanation of the changes of the maximum electron concentration of the F2 layer, NmF2. as a result of geomagnetic disturbances has proved elusive even after several decades of…Read more on Geomagnetic storms in the Antarctic F-region. II. Physical interpretation
Feeding in the two phytophagous beetles Hydromedion sparsutum and Perimylops antarcticus from South Georgia
1 November, 1989 by Roger Worland, William Block
The consumption of fresh plant materials by adults and larvae of Hydromedion sparsutum and Perimylops antarcticus (Col., Perimylopidae) was estimated from the production of faecal pellets and amount of excreted…Respiratory metabolism of Hydromedion sparsutum and Perimylops antarcticus (Col., Perimylopidae) from South Georgia
1 November, 1989 by Roger Worland, William Block
Metabolic rates were studied in adults and larvae of the two phytophagous beetles Hydromedion sparsutum and Perimylops antarcticus (Col., Perimylopidae) indigenous to the Sub-Antarctic island of South Georgia. From the…The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria
1 October, 1989
The effects of low temperatures, freezing and desiccation on a cyanobacterium (Phormidium) and an alga (Prasiola) from terrestrial Antarctic habitats were investigated. Net photosynthesis per unit dry weight, measured by…Calanoid copepods from South Georgia, with special reference to size dimorphism within the genus Pseudoboeckella
1 October, 1989
Three species of calanoid copepods, Boeckella michaelseni, Parabroteas sarsii and Pseudoboeckella poppei were recorded from 6 freshwater localities in the Husvik area, South Georgia. Of the latter species two distinct…Coarse-grained submarine fan and slope apron deposits in a Cretaceous back-arc basin, Antarctica
1 October, 1989
The Cretaceous of west James Ross Island, Antarctica represents the proximal fill of a late Mesozoic back‐arc basin that was probably initiated by oblique extension during the early development of…