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The influence of water content on the light climate within Antarctic mosses characterized using an optical microprobe
1 January, 1996
The light climate within wet and dry samples of ten mosses from the maritime Antarctic was determined using a computer-controlled optical microprobe system. Irradiances decreased with increasing depth within the…Seasonal variation in respiratory and photosynthetic parameters in three mosses from the maritime Antarctic
1 January, 1996
Carbon fixation under controlled conditions was measured in three mosses from the maritime Antarctic using an infra-red gas analysis system. Gas exchange parameters were determined during each season in 1993…The Antarctic ozone hole – 1994
1 January, 1996 by Jonathan Shanklin
In this paper we briefly describe the processes which lead to the formation of the Antarctic ozone hole, the attributes of the 1994 hole in comparison with previous years and…Some thoughts on precautionary measures for the krill fishery
1 January, 1996
The concept of precautionary measures for krill is discussed. A precautionary catch limit, based on the potential yield model developed by the CCAMLR Scientific Committee's Working Group on Krill (WG-Krill)…Read more on Some thoughts on precautionary measures for the krill fishery
Environment-krill relations in the South Georgia marine ecosystem
1 January, 1996 by Eugene Murphy
Interannual variability in the Southern Ocean ecosystem has long been noted and physical factors appear to dominate the dynamics. There are, however, few ecological time series available to assess this…Read more on Environment-krill relations in the South Georgia marine ecosystem
The distribution and classification of the problematic Fragilaria (Virescens v.) exigua Grun.Fragilaria exiguiformis (Grun.) Lange-Bertalot: a new species or a new genus?
1 January, 1996
The nomenclature of the taxon first recorded as Fragilaria (virescens) v. exigua by Grunow in Cleve & Moeller (1878) is examined with regard to the current botanical name, F. exiguiformis…Edad y origen de la fluorite del yacimiento La Nueva (Cabalango, Cordoba, Argentina) en base a geoquimica de isotopos radiogenicos (Nd y Sm)
1 January, 1996
The fluorite mineralization from the La Nueva Mine, has a Sm-Nd age of 130 ± 19 Ma, and thus must be related to the Lower Cretaceous late-Gondwanic extensional and magmatic…Stability of ice rises and uncoupled marine ice sheets
1 January, 1996 by Richard Hindmarsh, Richard Hindmarsh
An analysis of the linear stability of marine ice sheets uncoupled from associated ice shelves is presented. The principal feature is a zero eigenvalue associated with infinitesimal shifts along the…Read more on Stability of ice rises and uncoupled marine ice sheets
Stochastic perturbation of divide position
1 January, 1996 by Richard Hindmarsh, Richard Hindmarsh
Perturbation of divide position is considered by a linearization about the Vialov-Nye solution and also about related solutions with 0(1) relief. Relaxation times of one-sixteenth the fundamental thickness/accumulation-rate time-scale are…Time-step limits for stable solutions of the ice-sheet equation
1 January, 1996 by Richard Hindmarsh, Richard Hindmarsh
Various spatial discretizations for the ice sheet are compared for accuracy against analytical solutions in one and two dimensions. The computational efficiency of various iterated and non-iterated marching schemes is…Read more on Time-step limits for stable solutions of the ice-sheet equation
Temperature and the biomass of flying midges (Diptera: Chironomidae) in the high Arctic
1 January, 1996 by Roger Worland, William Block
We tested the hypothesis that habitat temperature is the driving variable determining both the short-term and seasonal patterns of abundance (biomass) of Eying adult non-biting midges (Chironomidae) in the high…Read more on Temperature and the biomass of flying midges (Diptera: Chironomidae) in the high Arctic
Arc evolution: a magnetic perspective from the Antarctic Peninsula
1 January, 1996
The Antarctic Peninsula is a Mesozoic–Cenozoic magmatic arc built on Palaeozoic and younger basement. It was formed by processes related to the subduction of Pacific ocean floor at its western…Read more on Arc evolution: a magnetic perspective from the Antarctic Peninsula
The diversity, distribution and ecology of diatoms from Antarctic inland waters
1 January, 1996
Diatoms are abundant and diverse in many Antarctic freshwaters, with a general trend of decreasing diversity moving southwards. They form an important component of many benthic algal communities in streams…Read more on The diversity, distribution and ecology of diatoms from Antarctic inland waters
Origin of the inland Acari of Continental Antarctica, with particular reference to Dronning Maud Land
1 January, 1996
The extant Acari occurring on the inland mountain ranges and nunataks of Continental Antarctica comprise only pre-Pleistocene endemic Prostigmata and Cryptostigmata of which the Prostigmata are the probable earlier colonists.…Comparison of geostatistical and random sample survey analyses of Antarctic krill acoustic data
1 January, 1996
Data from the acoustic surveys of MV SA “Agulhas” and FRV “Walther Herwig”, and the 1981 RRS “John Biscoe” South Georgia acoustic survey were analysed by geostatistical methods. Estimates of…Antipodal mosses: VI. Stegonia latifolia (Musci, Pottiaceae) in the Antarctic
1 January, 1996
Stegonia latifolia (Schwaegr. in Schult.) Vent. ex Broth. is recorded from the Antarctic on the basis of the specimens collected from Signy Island, South Orkney Island and King George Island,…Read more on Antipodal mosses: VI. Stegonia latifolia (Musci, Pottiaceae) in the Antarctic
A Permo-Carboniferous U-Pb age for part of the Guanta Unit of the Elqui-Limari Betholith at Rio del Transito, northern Chile
1 January, 1996
A U-Pb zircon age 0f 285.7+/-1.5 Ma is presented for granodiorite from the Chanchoquin pluton of the Guanta Unit, Elqui Superunit of the Elqui-Limari Batholith. This is the first U-Pb…Strontium labelling of the shell of the Antarctic limpet Nacella concinna (Strebel, 1908)
1 January, 1996 by Lloyd Peck
Nacella concinna (Strebel, 1908) held in seawater enriched with Sr, partially replaced Ca in their shells with Sr The bands laid down were clearly visible In back-scattered, scanning electron microscope…The structure and function of the tarsus I sensillar field in mites of the genusHalarachne(Halarachnidae: Gamasida)
1 January, 1996
The sensillar field on tarsus I of Halarachne (Halarachnidae: Gamasida), a respiratory tract endoparasite of seals (Pinnipedia) is associated with 12 hair- or peg-like receptor sensilla in the larva and…Geometry, motion and mass balance of Dyer Plateau, Antarctica
1 January, 1996 by Robert Mulvaney
Geodetic surveying and ground-based radar profiling were used to determine geometry and surface motion of the ice sheet on the Dyer Plateau, Antarctica, in the vicinity of an ice-core site…Read more on Geometry, motion and mass balance of Dyer Plateau, Antarctica
Diurnal and seasonal occurrence of polar patches
1 January, 1996
Analysis of the diurnal and seasonal variation of polar patches, as identified in two years of HF-radar data from Halley, Antarctica during a period near sunspot maximum, shows that there…Read more on Diurnal and seasonal occurrence of polar patches
Interpolation errors in UV–visible spectroscopy for stratospheric sensing: implications for sensitivity, spectral resolution, and spectral range
1 January, 1996 by Howard Roscoe
UV–visible measurements of stratospheric constituents require the ratio of a pair of spectra to be determined. If their wavelength calibrations differ and if an array detector is used, at least…A comparison of EISCAT and Dynasonde measurements of the auroral ionosphere
1 January, 1996
Incoherent-scatter radar and ionospheric sounding are powerful and complementary techniques in the study of the Earth's ionosphere. The work presented here involves the use of the Tromsø Dynasonde as a…Read more on A comparison of EISCAT and Dynasonde measurements of the auroral ionosphere
Age and correlation of volcanism in central Livingston Island, South Shetland Islands: K-Ar and geochemical constraints
1 January, 1996
Volcanic sequences in central Livingston Island can be divided into two broad groups. The older group consists of basalt-dacite lavas, clastic rocks and associated hypabyssal intrusions. The lavas are lithologically…Aspects of wave-particle interactions at mid-latitudes
1 January, 1996
Arguably the most significant source of particle precipitation into the ionosphere at mid-latitudes (L ∼2–3), at least for electrons in the tens to hundreds of keV energy range, is that…Read more on Aspects of wave-particle interactions at mid-latitudes
Introduced plants in Antarctica: Potential impacts and conservation issues
1 January, 1996
The development of and compliance with the code of conduct embodied in the Antarctic Treaty to prevent or minimize the introduction of plants into the Antarctic is outlined. A chronological…Read more on Introduced plants in Antarctica: Potential impacts and conservation issues
Ocean tides under the Filchner-Ronne Ice Shelf, Antarctica
1 January, 1996
A depth-averaged finite-difference numerical model has been used to make a preliminary study of the tides under the Filchner‐Ronne Ice Shelf. Open boundary conditions were specified using the global ocean…Read more on Ocean tides under the Filchner-Ronne Ice Shelf, Antarctica
Oribatid mites (Acari: Oribatida) of the Falkland Islands, South Atlantic and their zoogeographical relationships
1 January, 1996 by William Block
A total of 21 species of oribatid mites (Acari: Oribatida) are recorded from heat-extracted samples of soil and plant material collected in the Falkland Is., South Atlantic. Previous records of…Microplates and mantle plumes in Antarctica
1 January, 1996
The main geological characteristics of five crustal blocks within West Antarctica are summarized in this review. At least some of these blocks existed as Mesozoic microplates and their original, palaeoposition…Early Paleozoic sedimentation, magmatism, and deformation in the Pensacola Mountains, Antarctica: The significance of the Ross orogeny
1 January, 1996
Combined sedimentological, structural, and geochemical studies of a lower Paleozoic succession within the Pensacola Mountains, Antarctica, suggest that it probably formed in a foreland basin setting during the Ross-Delamerian orogen,…Geodynamic evolution of the Antarctic Peninsula during Mesozoic times and its bearing on Weddell Sea history
1 January, 1996
This review of the tectonic evolution of the Antarctic Peninsula during Mesozoic times highlights four main events; (1) Late Triassic-Late Jurassic extension, (2) Late Jurassic-Early Cretaceous dextral transpression, (3) Early…Early cretaceous magmatism during extensional deformation within the Antarctic Peninsula Magmatic Arc
1 January, 1996
Early Cretaceous plutonic rocks at Creswick Peaks in NW Palmer Land, Antarctic Peninsula show evidence of synmagmatic crustal extension and deformation during emplacement and cooling at 141 ±2 Ma. Deformation…Rhincalanus gigas and Calanus simillimus: lipid storage patterns of two species of copepod in the seasonally ice-free zone of the Southern Ocean
1 January, 1996 by Peter Ward
The lipid and hydrocarbon composition of two species of Antarctic copepod, Rhincalanus gigas and Calanus simillimus, was investigated at two contrasting sites. Differences in the quantity of total lipid between…A post-processing technique to remove background noise from echo integration data
1 January, 1996 by Jonathan Watkins
Echo integration of biological organisms with a low target strength can be difficult because of the problem of setting suitable pre-integration thresholds, and this is particularly acute with higher frequencies,…Read more on A post-processing technique to remove background noise from echo integration data
Seasonal variation in the effects of hard substratum biofilming on settlement of marine invertebrate larvae
1 January, 1996
The effect of season on “biofilming”;, as a cue for the settlement of marine invertebrate larvae, was investigated in a long‐term field study during the years 1992–1994. The series of…The Moores Peak Formation, a Cretaceous debris-avalanche deposit in the Antarctic Peninsula Volcanic Group, Livingston Island, South Shetland Islands
1 January, 1996
The Moores Peak Formation occurs on eastern Hurd Peninsula, Livingston Island, part of the South Shetland Island volcanic arc, which was active during Mesozoic and Cenozoic times. The rocks were…The relationship between water content and cold tolerance in the arctic collembolan Onychiurus arcticus (Collembola: Onychiuridae)
1 January, 1996 by Roger Worland
The arctic collembolan Onychiurus arcticus is freezing intolerant and experiences temperatures below -25°C during winter periods of low air temperatures and only light snow cover. Summer-collected individuals have a mean…The high latitude convection response to an interval of substorm activity
1 January, 1996 by Michael Pinnock
On 17 March 1991, five clear substorm onsets/intensifications took place within a three hour interval. During this interval ground-based data from the EISCAT incoherent scatter radar, a digital CCD all…Read more on The high latitude convection response to an interval of substorm activity
An annual profile of growth in the otoliths of immature Notothenia coriiceps Richardson in relation to the environment at Signy Island, Antarctica
1 December, 1995
Scanning electron microscope and image analysis techniques were used to construct a profile of otolith growth from June 1987–June 1988 in immature Notothenia coriiceps. Growth was found to fluctuate seasonally…Seasonal abundance and size variation in Antarctic populations of the Cladoceran Daphniopsis studeri
1 December, 1995
Continental freshwater lakes of Antarctica are characterized by species-poor biota (Heywood 1977). The plankton is dominated by algae, bacteria and protozoa (Koob & Leister 1972, Parker et al. 1982, Laybourn-Parry…Using multiple data sources to enhance photogrammetry for mapping antarctic terrain
1 December, 1995 by Adrian Fox
Extensive aerial photography cover is available for parts of the British Antarctic Territory, but the fisoffinfillijl characteristics of the photography, combined with the sparsity of ground control information and rugged…Read more on Using multiple data sources to enhance photogrammetry for mapping antarctic terrain
A statistical study of the possible effects of solar wind variability on the recurrence rate of substorms
1 December, 1995 by Mervyn Freeman
The recurrence of substorms in the terrestrial magnetosphere depends on many factors. Chief among these are (1) the mechanism(s) by which the magnetosphere stores and rids itself of excess magnetic…The construction of a diatom-based chlorophyll a transfer function and its application at three lakes on Signy Island (maritime Antarctic) subject to differing degrees of nutrient enrichment
1 December, 1995
1. Canonical correspondence analysis of a diatom and water chemistry dataset from fifty-nine maritime Antarctic lakes situated on Signy and Livingston Islands showed that nutrients and functions of nutrients (NH4+,…Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia
1 November, 1995
A study conducted at South Georgia in 1988/1989 indicated that several thousand Antarctic fur seals were entangled mainly in man-made material originating from fishing vessels. Consequently, the authority responsible for…Inter- and intra-annual variation in milk composition in Antarctic fur seals (Arctocephalus gazella)
1 November, 1995
The inter- and intra-annual variation in milk composition in Antarctic fur seals (Arctocephalus gazella) was investigated over three consecutive lactation periods (1990-1992) at Bird Island, South Georgia, which included one…Interpreting natural climate signals in ice cores
1 November, 1995 by Eric Wolff
Polar ice caps preserve information about atmospheric composition over the past tens of thousands to hundreds of thousands of years. They contain a rich history of the Earth's volcanic activity,…Read more on Interpreting natural climate signals in ice cores
Thermal Environments of Arctic Soil Organisms during Winter
1 November, 1995 by Roger Worland, William Block
This paper compares winter soil temperatures at five high arctic sites (Ny Alesund, West Spitsbergen) and one subarctic site (Slattatjakka, Abisko) during 1992/93 and 1993/94. At the high arctic sites…Read more on Thermal Environments of Arctic Soil Organisms during Winter
First Dynasonde observations of F-region plasma flow at Halley, Antarctica
1 November, 1995
Plasma flow vectors have been derived from data recorded by the Advanced Ionospheric Sounder (operating as a Dynasonde) at Halley, Antarctica (76°, 27°W). Single bulk flow vectors derived from the…Read more on First Dynasonde observations of F-region plasma flow at Halley, Antarctica
Collembolan water relations and environmental change in the maritime Antarctic
1 October, 1995 by William Block
The water status of the collembolan Cryptopygtus antarcticus (Willem) was investigated from April 1984 to December 1987 at Signy Island, maritime Antarctic, by monthly field sampling to determine body water…Read more on Collembolan water relations and environmental change in the maritime Antarctic
Acid sulphate alteration in a magmatic hydrothermal environment, Barton Peninsula, King George Island, Antarctica
1 September, 1995
Volcanic-hosted advanced argillic alteration on Barton Peninsula comprises an assemblage of chalcedonic silica, alunite family minerals, pyrophyllite, pyrite, native sulphur, zunyite and rutile, characteristic of an acid sulphate-type epithermal system.…Temporal patterns of milk production in Antarctic fur seals (Arctocephalus gazella)
1 September, 1995
The timing of milk production in Antarctic fur seals was studied at Bird Island, South Georgia. Like all lactating otariid seals (Pinnipedia: Otariidae), Antarctic fur seal females alternate between short…Read more on Temporal patterns of milk production in Antarctic fur seals (Arctocephalus gazella)
Low summer temperatures: a potential mortality factor for high arctic soil microarthropods?
1 September, 1995 by Roger Worland, William Block
Throughout the summers of 1992–1994 the low temperature performance of soil microarthropods at Ny Ålesund, Spitsbergen (78 °56′N 10 °53′E), was investigated. Species studied were the Collembola Hypogastrura tullbergi (Schäffer),…The food feeding ecology of the white-chinned petrel Procellaria aequinctialis at South Georgia
1 September, 1995 by Paul Rodhouse
The diet of the white-chinned petrel at Bird Island, South Georgia was studied during chickrearing in 1986 by quantitative analysis (by weight, frequency of occurrence and number of individuals) of…A linear perturbation analysis of magnetopause motion in the Newton-Busemann limit
1 September, 1995 by Mervyn Freeman
The response of the magnetopause surface to time-varying solar wind dynamic pressure is examined. We argue that to a first approximation the magnetopause surface may be considered as analogous to…Read more on A linear perturbation analysis of magnetopause motion in the Newton-Busemann limit
Year-round column ozone observations at 65°S: Validation and polar winter data
1 September, 1995 by Anna Jones, Eric Wolff, Howard Roscoe, Jonathan Shanklin
A SAOZ (System d'Analyse et d'Observations Zenithales) u.v.-visible spectrometer was installed at Faraday, Antarctica, in 1990, with a view to gaining year-round measurements of column ozone. Observations have been validated…Read more on Year-round column ozone observations at 65°S: Validation and polar winter data
The role of mantle plumes in continental breakup: case histories from Gondwanaland
1 September, 1995
After thirty years of plate-tectonic theory, the reasons why supercontinents disintegrate and disperse to form smaller continental plates remain enigmatic. Possible causes range from abnormally hot mantle upwellings, or plumes,…Read more on The role of mantle plumes in continental breakup: case histories from Gondwanaland
Omnivory and feeding selectivity in five copepod species during spring in the Bellingshausen Sea, Antarctica
1 August, 1995
Copepod grazing experiments were undertaken along a transect of five stations in the Bellingshausen Sea during austral spring. The stations spanned unproductive, nanoflagellate-dominated waters under pack ice to an open…Epibiotic communities on sublittoral macroinvertebrates at Signy Island, Antarctica
1 August, 1995 by Andrew Clarke, David Barnes
The epibiotic communities on locally abundant macroinvertebrates, in particular the brachiopod Liothyrella uva and the limpet Nacella concinna, were examined from depths between 0 and 50 m at Signy Island,…Read more on Epibiotic communities on sublittoral macroinvertebrates at Signy Island, Antarctica
Age and growth of the squid Loligo forbesi (Cephalopoda: Loliginidae) in Irish waters
1 August, 1995 by Paul Rodhouse
Samples of the squid Loligo forbesi Steenstrup 1856 were obtained from commercial catches and research cruises in the Irish and Celtic Seas from August 1991 until October 1993. Age and…Read more on Age and growth of the squid Loligo forbesi (Cephalopoda: Loliginidae) in Irish waters
Reproductive strategies of male and female Loligo forbesi (Cephalopoda: Loliginidae)
1 August, 1995 by Martin Collins, Paul Rodhouse
The reproductive strategies of male and female Loligo forbesi Steenstrup, 1856 were investigated from samples obtained from commercial catches and research cruises in Irish waters. In females maturity increased with…Read more on Reproductive strategies of male and female Loligo forbesi (Cephalopoda: Loliginidae)
Occurrence of the bivalve genus Manticula in the Early Cretaceous of Antarctica
1 August, 1995 by Alistair Crame
Palaeontologists •Series: PalaeoMath 101 •Series: R for Palaeontologists •Field Guides to Fossils •Palaeobiology: a Synthesis Article: Occurrence of the bivalve genus Manticula in the Early Cretaceous of Antarctica Publication: Palaeontology…Read more on Occurrence of the bivalve genus Manticula in the Early Cretaceous of Antarctica
Fourier transform Raman spectroscopic study of fungi
1 August, 1995
Fourier transform (FT) Raman spectra of the cell walls of three species of fungi are reported for the first time, namely (i) Agaricus bisporus, a fruiting bud, (ii) Mortierella genus…Read more on Fourier transform Raman spectroscopic study of fungi
Genetical population structure of Trechisibus antarcticus (Coleoptera; Car abidae) on South Georgia and on the Falkland islands
1 August, 1995
Samples of Trechisibus antarcticus (Coleoptera, Carabidae), collected on South Georgia and the Falkland Islands, were analysed at 8 polymorphic allozyme loci, related to the supposition of a recent arrival of…First Records of Mated Female Loligo Gahi (Cephalopoda: Loliginidae) in the Falkland Islands
1 August, 1995
This communication presents the first records of mated female Loligo gahi in Falkland Island waters. In October 1993 fully mature mated female L. gahi were identified in samples taken from…Propagation to the ground at high latitudes of auroral radio noise below the electron gyrofrequency
1 August, 1995 by Richard Horne
The propagation of auroral radio noise at frequencies below the ionospheric electron gyrofrequency (ƒce ≈ 1.4 MHz) at high latitudes is investigated using the HOTRAY ray tracing code. Two mechanisms…Springtime reduction in MF mesospheric echo occurrence
1 August, 1995
Radar echoes from the upper mesosphere recorded by the dynasonde at Halley (76°S, 27°W), Antarctica, over four years have been studied to reveal the diurnal and seasonal characteristics of echo…Read more on Springtime reduction in MF mesospheric echo occurrence
Air-breathing littoral mites of sub-Antarctic South Georgia
1 August, 1995
Nine species of littoral air-breathing Acari were collected at Husvik Harbour, South Georgia, comprising three Parasitiphis (Rhodacaridae), one Nanorchestes (Nanorchestidae), two Halo-zetes (Podacaridae) and three Hyadesia (Hyadesidae). All of the…Read more on Air-breathing littoral mites of sub-Antarctic South Georgia
Indices of body condition and body composition in female Antarctic fur seals (Arctocephalus gazella)
1 July, 1995
An attempt was made to develop simple, inexpensive, rapid means of determining body composition in Antarctic fur seals (Arctocephalus gazella). Measurements of total body water (TBW) and total body lipid…The biology, life cycle and ecophysiology of the Antarctic miteAlaskozetes antarcticus
1 July, 1995 by Peter Convey, William Block
This paper is dedicated to the late Nigel Bonner, who as Head of the Life Sciences Division at British Antarctic Survey, encouraged and supported this research with his characteristic enthusiasm.…Read more on The biology, life cycle and ecophysiology of the Antarctic miteAlaskozetes antarcticus
The effect of the mid-latitude ionospheric trough on whistler mode ducting during magnetic storms
1 July, 1995 by Mark Clilverd
Whistler-mode signals observed at Faraday, Antarctica (65° S, 64° W, Λ=50.8°) show anomalous changes in group delay and Doppler shift with time during the main phase of intense geomagnetic activity.…The invasion of the carnivorous carabid beetle Trechisibus antarcticus on South Georgia (sub-Antarctic) and its effect on the endemic herbivorous beetle Hydromedion spasutum
1 July, 1995 by William Block
Recently two species of carabid beetle were accidentally introduced onto the sub-Antarctic island of South Georgia. Both species are carnivorous and flightless. One of the species, Trechisibus antarcticus, is locally…Further evidence of fracture-zone induced tectonic segmentation of the Antarctic Peninsula from detailed aeromagnetic anomalies
1 July, 1995
Aeromagnetic anomaly data collected between 67°S and 70°S crossing the Antarctic Peninsula and adjacent offshore areas show a prominent NW-SE trend in the magnetic fabric. Apparent lateral offsets, previously recognized…Composition and distribution of the inoceramid bivalve genus Anopaea
1 June, 1995 by Alistair Crame
Anopaea is a distinctive Late Jurassic-Early Cretaceous inoceramid bivalve genus. Traditionally recognized by its elongate-pyriform outline and impressed antero-ventral sulcus, it is now apparent that it also has a distinctive…Read more on Composition and distribution of the inoceramid bivalve genus Anopaea
A study of the thermospheric forces at a high latitude site on two days of differing geomagnetic activity
1 June, 1995
Data from the Fabry-Perot Interferometer and Dynasonde at Halley (75.5°S, 26.6°W, L ∼ 4.2), Antarctica, have been used to calculate the forces acting on the high latitude thermosphere. Two case…Hydrocarbon content of an Antarctic infaunal bivalve—historical record or life cycle changes?
1 June, 1995
The Antarctic bivalve Yoldia eightsi (Couthouy) has been assessed as a monitor species in the vicinity of a research station at Signy Island. For animals of comparable age n-alkane loading…Seismic investigation of the Larsen Ice Shelf, Antarctica: in search of the Larsen Basin
1 June, 1995 by Ed King
Seismic reflection surveys were carried out over the Larsen Ice Shelf to examine the extent of the observed sedimentary sequences of the Larsen Basin as suggested by aeromagnetic and gravity…The sunspot cycle and “auroral”Flayer irregularities
1 May, 1995
The use of the word “aurora” for many different observations at high latitudes has limited the concepts involved; this is particularly true for F region irregularities. Observations setting the position…Read more on The sunspot cycle and “auroral”Flayer irregularities
HF radar signatures of the cusp and low-latitude boundary layer
1 May, 1995 by Michael Pinnock
Continuous ground-based observations of ionospheric and magnetospheric regions are critical to the Geospace Environment Modeling (GEM) program. It is therefore important to establish clear intercalibrations between different ground-based instruments and…Read more on HF radar signatures of the cusp and low-latitude boundary layer
Seasonal and annual growth in erect species of Antarctic bryozoans
1 May, 1995 by David Barnes
Seasonal and annual growth was monitored in situ at Signy Island in two species of bryozoan of different growth morphologies, using photographic and tagging techniques. Cellarinella watersi, a heavily calcified…Read more on Seasonal and annual growth in erect species of Antarctic bryozoans