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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…Unique spawning behaviour by the Antarctic limpet Nacella (Patinigera) concinna (Strebel, 1908)
1 January, 1983
The Antarctic limpet Nacella (Patingera) concinna (Strebel, 1908) forms temporary “stacks” before spawning, a behaviour which ensures that gametes are released in close proximity. This promotes the fertilization of a…Recent temperature changes in the Arctic and Antarctic
1 January, 1983
The possibility of a global warming induced by increasing levels of atmospheric carbon dioxide has led to increased interest in monitoring global temperatures. Polar regions are of particular interest because…Read more on Recent temperature changes in the Arctic and Antarctic
Regime of the Filchner–Ronne ice shelves, Antarctica
1 January, 1983
Seismic, radio-echo, TWERLE balloon and oceanographic data of the Filchner-Ronne ice shelves are analysed. A large thin area in the central Ronne Ice Shelf is found to differ from the…Read more on Regime of the Filchner–Ronne ice shelves, Antarctica
Studies of sporadic E (Es) associated with the main ionospheric trough
1 January, 1983
The occurrence of sporadic E (ES) under the main F region trough has been established using ionograms from a vertical incidence ionosonde at Halley Bay, Antarctica (76°S, 27°W; L =…Read more on Studies of sporadic E (Es) associated with the main ionospheric trough
Mélange within subduction–accretion complex rocks of Fredriksen Island, South Orkney Islands
1 January, 1983
Summary. A m´lange on Fredriksen Island, South Orkney Islands, is part of a Mesozoic subduction- accretion complex which formed along the western, Pacific side of Gondwana. It consists of a…High latitude observations of whistlers using three spaced goniometer receivers
1 January, 1983
One-hop whistlers were recorded simultaneously at three high latitude stations in northern Norway during February 1978 using VLF goniometer receivers. Triangulation of the azimuthal bearings of whistlers received during an…Read more on High latitude observations of whistlers using three spaced goniometer receivers
The Antarctic connection
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…Towards an inventory of the great ice sheets
1 January, 1983
In view of the global effects of climatic change there is an urgent need to detect even a small mass imbalance in the polar ice sheets. The relative merits of…Breeding biology of the light-mantled sooty albatross (Phoebetria palpebrata) at South Georgia
1 January, 1983
Aspects of the breeding biology of the Light‐mantled sooty albatross Phoebetria palpebrata were studied at South Georgia. Its breeding distribution there is summarized and an annual breeding population of c.…Pattern in the simple moss-turf communities of the sub-Antarctic and maritime Antarctic
1 January, 1983
(1) Grids of 1500 (300 × 5) 2 × 2 cm quadrats have been recorded on three moss-turf sites: South Georgia in the Sub-Antarctic (three dominant species), and in the…Read more on Pattern in the simple moss-turf communities of the sub-Antarctic and maritime Antarctic
First bistatic oblique-incidence ionograms between digital ionosondes
1 January, 1983
Identical digital ionosondes (dynasondes) at Brighton Colorado and at White Sands Missile Range, New Mexico, 864 km distant, were synchronized for bistatic sounding in multifrequency and fixed frequency recording patterns.…Read more on First bistatic oblique-incidence ionograms between digital ionosondes
Distribution and characteristics of Chromobacterium in the maritime and sub-antarctic
1 January, 1983
The distribution of Chromobacterium on islands of the Scotia Ridge and Antarctic Peninsula was monitored during 1975–81. Three groups of strains were recognized: (1) an acid-tolerant group at South Georgia…Read more on Distribution and characteristics of Chromobacterium in the maritime and sub-antarctic
Power line harmonic radiation in Newfoundland
1 January, 1983
Recent research strongly suggests that harmonic radiation from electrical power distribution networks in industrialized regions (PHLR) has a significant effect on the occurrence of VLF waves and the energetic electron…Late Mesozoic bivalve biostratigraphy of the Antarctic Peninsula region
1 December, 1982 by Alistair Crame
Two groups of bivalves, the inoceramids and buchiids, are particularly useful zone fossils in the Mesozoic sedimentary formations of the Antarctic Peninsula region. In the Upper Jurassic, species of the…Read more on Late Mesozoic bivalve biostratigraphy of the Antarctic Peninsula region
Composition and origin of garnet from the Antarctic Peninsula Volcanic Group of Trinity Peninsula
1 December, 1982
Garnet is widely found as a minor constituent in rocks of the Antarctic Peninsula Volcanic Group (APVG) of Trinity Peninsula. It occurs as conspicuous megacrysts, or in xenoliths within volcanic…Late Jurassic inoceramid bivalves from the Antarctic Peninsula and their stratigraphic use
1 July, 1982 by Alistair Crame
The majority of inoceramid bivalves occurring in Late Jurassic temperate realm assemblages can probably be assigned to the genus Retroceramus. Although there are a few transitional forms, Retroceramus can generally…DNA amounts of angiosperms from the Antarctic and South Georgia
1 January, 1982
The 4C DNA amounts of 23 native or alien angiosperms from South Georgia, or the maritime Antarctic, ranged from 1.4 to 80.5 pg (in 14 monocots) and from 1.3 to…Read more on DNA amounts of angiosperms from the Antarctic and South Georgia
Late Cretaceous and early Miocene Andean-type plutonic activity in northern Makran and Central Iran
1 January, 1982
Two calc-alkaline plutonic complexes. Bazman and Natanz, intruded through the south-eastern active and south-western ancient continental margins of Central Iran, Have been dated by the Rb-Sr whole-rock isochron method at…Cold hardiness in invertebrate poikilotherms
1 January, 1982 by William Block
1. 1. A selective review is made of the information on cold hardiness in the following taxonomic groups: Protozoa, Platyhelminthes, Rhynchocoela, Rotifera, Nematoda, Mollusca, Annelida, Tardigrada, micro-Arthropoda (Collembola & Acari)…Supercooling points of insects and mites on the Antarctic Peninsula
1 January, 1982 by William Block
1. Mean supercooling points of eleven species of arthropods (three Collembola, seven Acari and one Diptera) ranged from ‐6.2 to ‐9.4°C (high group), and from ‐17.7 to ‐31.0°C (low group).…Read more on Supercooling points of insects and mites on the Antarctic Peninsula
Cold hardiness of terrestrial mites at Signy Island, maritime Antarctic
1 January, 1982 by William Block
(1) The cold hardiness of four species was studied in respect of supercooling ability, cryoprotective substances, chill-coma temperatures and survival under anaerobiosis. The effects of low temperature acclimation and starvation…Read more on Cold hardiness of terrestrial mites at Signy Island, maritime Antarctic
Humpback sightings in Antarctica
1 January, 1982
Because of their coastal habits and lethargic nature, humpback whales Megaptera novaeangliae have been among the species hardest hit by the whaling industry. Between 1904 and 1973 (when humpback catching…The nocturnal intermediate layer over South Georgia : solar and magnetic influence on occurrence
1 January, 1982
Ionograms from South Georgia (54°S, 37°W; L = 1.9) are used to investigate the influence of magnetic and solar activity upon the occurrence of the nocturnal intermediate layer. The diurnal…Schumann resonance frequency variations during sudden ionospheric disturbances
1 January, 1982
Fluctuations of the fundamental and harmonic frequencies of the Schumann (earth-ionosphere cavity) resonances measured near Tromsø, Norway, on 28 March 1979 are examined on a timescale of ≲ 20 minutes.…Read more on Schumann resonance frequency variations during sudden ionospheric disturbances
Lipid synthesis and reproduction in the polar shrimp Chorismus antarcticus
1 January, 1982 by Andrew Clarke
Chorismus antarcticus (Pfeffer, 1887) is a small benthic hippolytid shrimp which breeds seasonally, producing a batch of large, lipid-rich eggs that are brooded over winter by the female, and hatch…Read more on Lipid synthesis and reproduction in the polar shrimp Chorismus antarcticus
Temperature and embryonic development in polar marine invertebrates
1 January, 1982 by Andrew Clarke
References Citations Metrics Reprints & Permissions Get access Abstract The life-history tactics of many Antarctic marine invertebrates suggest that the commonly observed slow rates of growth are adaptations…Read more on Temperature and embryonic development in polar marine invertebrates