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Pine Island Glacier and its drainage basin: results from radio echo-sounding
1 January, 1982
Retreat of the grounding lines of West Antarctic ice streams may lead to the collapse of the West Antarctic ice sheet. Pine Island Glacier has been pinpointed as an ice…Read more on Pine Island Glacier and its drainage basin: results from radio echo-sounding
Energy costs of incubation and moult in petrels and penguins
1 January, 1982
Most penguins and petrels fast during lengthy incubation shifts; all penguins fast through their moult. The resulting weight losses can be used to calculate energy costs of these activities and…Read more on Energy costs of incubation and moult in petrels and penguins
State of balance of the ice sheet in the Antarctic Peninsula
1 January, 1982
Data from ice rises on the east coast of the Antarctic Peninsula can be interpreted as showing that the ice is thinning at rates of up 0.5 m a−1. However,…Read more on State of balance of the ice sheet in the Antarctic Peninsula
Ionospheric troughs in Antarctica
1 January, 1982 by Michael Pinnock
We report here the first observations of the dynamics of both the mid-latitude and high-latitude troughs made by the Advanced Ionospheric Sounder (AIS) at Halley Station, Antarctica (76° S, 27°…Seasonal microbial activity in Antarctic freshwater lake sediments
1 January, 1982
Seasonal fluctuations in population numbers and activity were monitored in bottom sediments of oligotrophic Moss Lake, mesotrophic Heywood Lake and eutrophic Amos Lake on Signy Island, South Orkney Islands, during…Read more on Seasonal microbial activity in Antarctic freshwater lake sediments
Diurnal variations in mean volume backscattering strength of an Antarctic krill (Euphausia superba) patch
1 January, 1982
A series of acoustic transects and quantitative net hauls was made in a large patch of Antarctic krill (Euphausia superba) just north of South Georgia. The krill went through a…Lacustrine deltas in a Mesozoic alluvial sequence from Camp Hill, Antarctica
1 January, 1982
Sedimentary rocks of late Mesozoic age exposed at Camp Hill, northern Antarctic Peninsula, are associated with calc‐alkaline volcanic rocks. They represent deposition on a fault‐controlled floodplain, with marginal alluvial fans,…Read more on Lacustrine deltas in a Mesozoic alluvial sequence from Camp Hill, Antarctica
Late Mesozoic sedimentation in the northern Antarctic Peninsula and its relationship to the southern Andes
1 January, 1982
Two distinct phases of island-are evolution are recognized in late Mesozoic sedimentary rocks of the northern Antarctic Peninsula. During late Jurassic (Kimmeridgian-Tithonian) times, alternating radiolaria-rich mudstones and ash-fall tuffs were…The formation of vertical edges on Antarctic moss peat banks
1 January, 1982
Moss peat banks, which can be up to 3 m deep, greater than 2500 m2 in area, and up to 5000 yr old, occur in the Antarctic. Radiocarbon dates show…Read more on The formation of vertical edges on Antarctic moss peat banks
Nematophagous fungi from the maritime Antarctic
1 January, 1982
Eighteen taxa of terrestrial predacious fungi (nematode-trapping species and endozoic parasites of nematodes) are reported from the maritime Antarctic (15 taxa from Signy Island, South Orkney Islands, and ten taxa…Read more on Nematophagous fungi from the maritime Antarctic
Summer heat and ice balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
1 January, 1982
The heat and ice balances of a temperate sub-Antarctic cirque glacier were measured through the 1973–74 melt season at an altitude midway between the climatic firn limit and the snout.…Oxygen consumption of some Antarctic and British gastropods: An evaluation of cold adaptation
1 January, 1982
1. The oxygen consumption of four species of inshore gastropods from Signy Island, Antarctica was measured at −1.7 and +0.5°C in seawater. The limpet Nacella concinna (Strebel) showed a decrease…Terrestrial myriametric radiation from the earth’s plasmapause
1 January, 1982
Terrestrial myriametric radiation (non-thermal continuum) observed by the GEOS 1 spacecraft is used to determine the radial profile of plasma density at the equatorial plasmapause. The method utilises the properties…Read more on Terrestrial myriametric radiation from the earth’s plasmapause
Bryum Hedw. Collected from Lake Vanda, Antarctica
1 January, 1982
Bryum cf. algens Card, was collected by SCUBA divers from 9-31 m in the benthos of perennially ice-covered Lake Vanda (77°32′S, 161°35′E), Wright Valley, southern Victoria Land, Antarctica. It occurred…Read more on Bryum Hedw. Collected from Lake Vanda, Antarctica
Diving depths and energy requirements of king penguins
1 January, 1982
During 4- to 8-day periods at sea, half of 2595 dives of three king penguins were more than 50 meters and two dives exceeded 240 meters. The at-sea metabolic rate,…Read more on Diving depths and energy requirements of king penguins
Relationship between a disease, host density and mortality in a free-living deer population
1 January, 1982
(1) Disease is often viewed as a density-dependent factor expected to limit population numbers, but field evidence from mammals is generally lacking. (2) Mandibular swellings in reindeer on South Georgia…Growth and condition of three introduced reindeer herds on South Georgia: the effects of diet and density
1 January, 1982
The patterns of growth and seasonal changes in body weight and fat reserves of three herds of introduced reindeer on the sub‐Antarctic island of South Georgia were investigated. Two of…Propagation of electrostatic upper-hybrid emission andZ mode waves at the geomagnetic equatorial plasmapause
1 January, 1982
A theory proposed for the generation of terrestrial myriametric radiation (nonthermal continuum) invokes the linear conversion of electrostatic upper‐hybrid emissions to escaping left‐hand polarized ordinary (L‐O) waves by virtue of…Oceanographic observations from George VI Ice Shelf, Antarctic Peninsula
1 January, 1982
Summer profiles of sea-water temperature, salinity and flow were obtained on George VI Ice Shelf near its northern ice front. At each depth, temperature salinity and density show little variation…Read more on Oceanographic observations from George VI Ice Shelf, Antarctic Peninsula
The reproductive biology of some serolid isopods from the Antarctic
1 January, 1982
Several species of serolid isopod from Signy Island, South Orkney Islands and also from South Georgia were studied, and aspects of their reproductive behaviour and associated morphology are discussed. InSerolis…Read more on The reproductive biology of some serolid isopods from the Antarctic
Aggressive and maternal activities of female southern elephant seals (Mirounga leonina)
1 January, 1982
The aggressive and maternal behaviours of 44 individually marked female southern elephant seals, Mirounga leonina, were studied at South Georgia. Evidence of dominance and subordination could be determined in only…Read more on Aggressive and maternal activities of female southern elephant seals (Mirounga leonina)
Seasonal and sexual patterns of growth and condition of reindeer introduced into South Georgia
1 January, 1982
The pattern of growth, timing and magnitude of seasonal changes in body weight and condition were compared between male and female reindeer. The data were derived from 300 animals shot…Characterization of glycoprotein antifreeze biosynthesis in isolated hepatocytes from Pagothenia borchgrevinki
1 January, 1982 by Andrew Clarke
Incorporation of 14C‐leucine and 3H‐alanine into TCA‐precipitable protein, TCA‐soluble protein, and antifreeze glycoproteins (AFGP) was measured in isolated hepatocytes from Pagothenia borchgrevinki Boulenger following acclimation to −1.5°C and + 4°C.…Rb-Sr geochronology of Graham Land, Antarctica
1 January, 1982
Thirty-five new Rb-Sr whole-rock and mineral isochrons are reported for igneous rocks from Graham Land. Magmatism was essentially continuous but peaks of activity occurred in early Jurassic, early Cretaceous, late…Oxygen-isotope and total beta-radioactivity measurements on 10 m ice cores from the Antarctic Peninsula
1 January, 1982
As part of the Glaciology of the Antarctic Peninsula (GAP) programme, the snow cover at 25 stations was sampled to 10 m depth for oxygen–isotope and total β-radioactivity analysis. The…Recent variations in heavy metal concentrations in firn and air from the Antarctic Peninsula
1 January, 1982 by Eric Wolff
A snow-pit and hand-drilled core have been sampled at Spaatz Island in the Antarctic Peninsula to obtain evidence on the importance of short-term fluctuations of heavy metal (Cd, Cu, Pb,…Seasonal trends in chemical composition of reindeer forage plants on South Georgia
1 January, 1982
Systematic observations were made on reindeer feeding behaviour during 1973–74, and seven phanerogams and three bryophytes were selected for sampling during the following year. Material of the principal plant species…Read more on Seasonal trends in chemical composition of reindeer forage plants on South Georgia
Electrical resistivity of George VI Ice Shelf, Antarctic Peninsula
1 January, 1982
A georesistivity survey was made on part of George VI Ice Shelf (71°55'S, 67°20'W). The principal objectives were to determine the electrical structure of the 1ce shelf, in particular how…Read more on Electrical resistivity of George VI Ice Shelf, Antarctic Peninsula
Movements of the mid-latitude ionospheric trough
1 January, 1982 by Michael Pinnock
A new method for monitoring the position and movement of large ionospheric structures is described. The technique uses data from an ionosonde nominally operating at vertical incidence, but relies on…Read more on Movements of the mid-latitude ionospheric trough
Population dynamics of the antarctic opisthobranch Philine gibba Strebel
1 January, 1982
Population structure and growth of Philine gibba Strebel have been examined using weight- and length-frequency analyses. The population consisted of five year classes but the 4th and 5th year classes…Read more on Population dynamics of the antarctic opisthobranch Philine gibba Strebel
Echoing mixed-path whistlers near the dawn plasmapause, observed by direction-finding receivers at two Antarctic stations
1 January, 1982
Duct coupling, in which part of the energy of a downcoming whistler-mode wave becomes trapped in a different duct after upward reflection in the ionosphere, manifests itself in the phenomenon…The terrestrial Protozoan fauna of South Georgia
1 January, 1982
75 taxa of Protozoa (18 flagellates, 9 naked rhizopods, 20 testate rhizopods and 28 ciliates) were found in 14 samples of mineral materials, peats, soils and guano collected from the…Read more on The terrestrial Protozoan fauna of South Georgia
Dynamic behaviour of Rutford Ice Stream
1 January, 1982
The grounding-line region of Rutford Ice Stream was surveyed from the ground during 1978–79 and 1979–80, and from the air in 1980–81. Maps of surface elevation and ice thickness of…The composite floor of the Cretaceous back-arc basin of South Georgia
1 January, 1982
Part of an ophiolite sequence and pre-Jurassic continental basement rocks are remnants of the composite floor of the Cretaceous back-arc basin system on South Georgia. The partially preserved ophiolite consists…Read more on The composite floor of the Cretaceous back-arc basin of South Georgia
Multi-station VLF direction-finding measurements in eastern Canada
1 January, 1982
The directions of propagation, in the earth-ionosphere waveguide, of multi-component two-hop whistlers recorded on 10 July 1972 by four VLF goniometer receivers in eastern Canada have been determined. Using the…Read more on Multi-station VLF direction-finding measurements in eastern Canada
Cold hardiness of Collembola at Signy Island, maritime Antarctic
1 January, 1982 by William Block
The cold hardiness of two Antarctic species of Collembola, Cryptopygus antarcticus Willem and Parisotoma octooculata (Willem), was studied in field fresh, starved and low temperature acclimated specimens at Signy Island,…Read more on Cold hardiness of Collembola at Signy Island, maritime Antarctic
Models for the deposition and simple shear deformation of a turbidite sequence in the South Georgia portion of the southern Andes back-arc basin
1 January, 1982
The Cumberland Bay Formation on South Georgia (South Atlantic) is an Upper Jurassic–Lower Cretaceous andesitic turbidite sequence >8 km thick, derived from a contemporary volcanic are and deposited in part…Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica
1 January, 1982
New K-Ar and Rb-Sr data are presented for the age of part of the supposed late Palaeozoic/early Mesozoic metamorphic complex in West Antarctica (here renamed the ‘Scotia metamorphic complex’). These…