Found 14065 items
1 January, 1985
Leaves and litter of two phanerogams (Acaena magellanica (Lam.) Vahl and Poa flabellata (Lam.) Hook. f.) were collected in spring on the subantarctic island of South Georgia. Leaves immersed in…1 January, 1985
Isolated exotic blocks of late Jurassic age occur within an undeformed succession of marine Lower Cretaceous back‐arc basin deposits on the west coast of James Ross Island, Antarctica. These flat,…Read more on Submarine glide blocks from the Lower Cretaceous of the Antarctic Peninsula
1 January, 1985
Species of the genus Thalassiosira are abundant in the oceanic waters south of the Antarctic Convergence Zone. Species within the genus are differentiated on the basis of arrangement and density…1 January, 1985
1. Single fast fibres were isolated from the myotomal muscles of icefish (Chaenocephalus aceratus Lönnberg, Antarctica), North Sea Cod (Gadus morhua L.) and Pacific Blue Marlin (Makaira nigricans Wakiya, Hawaii).…1 January, 1985
Contractile properties were determined for muscles from three species ofAntarctic fish with broadly similar activity patterns:Trematomus hansoni, Notothenia rossii and Chaenocephalus aceratus. C. aceratus differs from theother species in that…Read more on Contractile and metabolic characteristics of muscle fibres from Antarctic fish
1 January, 1985
Adélie Penguins and Chinstrap Penguins breed in abundance at Signy Island, South Orkney Islands, which is near the northern breeding limit of the former but in the centre of the…1 January, 1985
Adélie Pygoscelis adeliae and Chinstrap P. antarctica penguins are important consumers of Southern Ocean marine resources. The stomach contents of adult penguins at Signy Island, South Orkney Islands, were analysed…1 January, 1985
Fossil wood has been used extensively as a paleocurrent indicator, and published evidence suggests that it may be aligned either parallel or perpendicular to a unidirectional current. Flume experiments on…Read more on Orientation studies of waterlogged wood: A paleocurrent indicator?
1 January, 1985
At least seven organic bromine compounds have been positively identified in the atmosphere1,2 (CH3Br, CH2Br2, CHBr3, CH2BrCl, CF3Br, CF2BrCl and C2H4Br2) and others have been observed in coastal seawater samples…1 January, 1985 by Michael Pinnock
A summer, dayside, mid-latitude trough detected by a digital ionosonde located at Halley (76°S, 27°W, L = 4.2) is described. The trough is found to be present in the F2-region…Read more on Observations of a day-time mid-latitude ionospheric trough
1 January, 1985
George VI Ice Shelf floats on warmer water than any other ice shelf in the Antarctic. Profiles of temperature (T) and salinity (S) taken in the vicinity of the northern…Read more on Interaction between ice shelf and ocean in George VI Sound, Antarctica
1 January, 1985
Dielectric experiments have been undertaken at temperatures between −2° and −70° C in the frequency range 10Hz to 100 kHz on 14 firn and ice samples retrieved from the Antarctic…Read more on Dielectric behaviour of firn and ice from the Antarctic Peninsula, Antarctica
1 January, 1985
The paper discusses how profiles of electron and/or ion distributions that are produced by two different computer models can be smoothly coupled together. The first of these models is the…Read more on Modelling the plasmasphere for the international reference ionosphere
1 January, 1985
Brood reduction is common in a population of Blue‐eyed Shags on Signy Island, South Orkney Islands. This paper describes possible adaptations which may reduce the brood. In clutches of three,…Read more on Brood reduction in the Blue-eyed Shag Phalacrocorax atriceps
1 January, 1985
The realistic model of Quegan et al. has been used to investigate the convection paths of ionospheric plasma at 300 km altitude, for different polar cap radii and in both…Read more on Modelling studies of ionospheric convection in northern and southern polar regions
1 January, 1985
A new and well-preserved.asteroid, Protremaster uniserialis (gen. & sp.nov.) is described from the Lower Jurassic (Sinemurian) of Antarctica. This find extends the fossil record of the family Asterinidae and the…Read more on Protremaster, a new Lower Jurassic genus of asteroid from Antarctica
1 January, 1985
Parametric and nonparametric analyses were used to investigate the relationships between the populations of viable microbes and 4 edaphic variables — soil moisture, rainfall, temperature, and pH. Microbial populations were…1 January, 1985
Smith (1982) reported the discovery in 1981 of Antarctic hair grass Deschampsia antarctica Desv. on the largest of the Refuge Islands (68° 21' S) in Marguerite Bay, off the south-west…Read more on New southernmost record for Antarctic flowering plants
1 January, 1985
Beauchêne Island is the most isolated of the Falkland Islands archipelago and until the authors' visit there in 1980 little was known or published about the island and its biota…1 January, 1985
The 35 × 20 km Cerro Galán resurgent caldera is the largest post-Miocene caldera so far identified in the Andes. The Cerro Galán complex developed on a late pre-Cambrian to…Read more on Ignimbrites of the Cerro Galan caldera, NW Argentina
1 January, 1985
The installation of a Fabry–Perot interferometer at Halley (75.5° S, 26.8° W; L = 4.2), Antarctica, has now allowed the first comparison to be made between Southern Hemisphere ground-based thermospheric…1 January, 1985
A subduction-accretion model incorporating new geophysical data is presented to explain the geology of the Antarctic Peninsula from late Palaeozoic to Cenozoic time. According to the model, the peninsula consists…Read more on Crustal growth of the Antarctic Peninsula by accretion, magmatism and extension
1 January, 1985
Whole‐rock and mineral analyses of polydeformed mica‐schist, quartzite, marble and amphibolite are presented from Signy Island, South Orkney Islands, part of the Scotia metamorphic complex. Whole‐rock chemistry suggests that the…1 January, 1985
Ninety nine per cent of all the fresh water on the surface of the Earth is in the form of ice. Observations from space have revealed more about the ice…1 January, 1985
Albert Armitage was the second in command of both the Jackson-Harmsworth expedition of 1884–1897 and R. F. Scott's British National Antarctic Expedition, 1901–1904. He never led an expedition himself; as…1 January, 1985 by Jonathan Watkins
The lengths of 9 421 Antarctic krill, Euphausia superba Dana, from 144 net samples from 4 depth ranges at the same location (north east of South Georgia) were measured over…1 January, 1985 by Eric Wolff
Recent snow from two sites in the Antarctic Peninsula has been analyzed for Al, Cd, Cu, Pb and Zn. Measurement of full procedural blanks and of the extent of penetration…1 January, 1985 by Eric Wolff
Many attempts have been made to trace increases in global pollution from the record of impurities preserved in polar snow and ice layers. Although inadequate sampling and analysis techniques have…Read more on The record of global pollution in polar snow and ice
1 January, 1985
Citifluor, a photofading retardant for epifluorescence studies, was evaluated as a mountant for enhancing algal autofluorescence and Acridine Orange (AO) fluorescence of bacteria and fungi in mineral soils from Antarctic…Read more on Photofading retardant for epifluorescence microscopy in soil micro-ecological studies