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Antarctic aerosol and snowfall chemistry: implications for deep Antarctic ice-core chemistry
1 January, 1999 by Eric Wolff
In this paper we first summarise major findings of recent atmospheric studies of nitrogen and sulphur species present in the boundary layer of coastal Antarctic regions. We then discuss the…An assessment of three automatic depression tracking schemes
1 January, 1999 by John Turner
The performance of three automatic depression tracking schemes developed by Terry & Atlas (1996), Murray & Simmonds (1991a) and Konig et al. (1993) when applied over one month are assessed.…Read more on An assessment of three automatic depression tracking schemes
A Lower Cretaceous clastic slope succession, Livingston Island, Antarctica: sand-body characteristics, depositional processes and implications for slope apron depositional models
1 January, 1999
The early Cretaceous fill of the forearc/intra-arc Byers Basin includes a 600- to 900-m-thick interval of marine slope apron deposits, the President Beaches Formation. This is a predominantly argillaceous succession…Possible evidence for Late Cretaceous off-axis volcanism in the outer James Ross Basin
1 January, 1999
A prominent volcaniclastic channel sandstone deposited by a landward-flowing sediment gravity flow is described from the Maastrichtian of Snow Hill Island in the northern Larsen Basin. The characteristics of this…Read more on Possible evidence for Late Cretaceous off-axis volcanism in the outer James Ross Basin
First in situ temperature measurements at the Antarctic summer mesopause
1 January, 1999
The Arctic summer mesopause at ∼88 km is the coldest-known place (∼130 K) in the terrestrial atmosphere and is ∼60 K colder in summer than winter. Indirect evidence has suggested…Read more on First in situ temperature measurements at the Antarctic summer mesopause
On the origin of fore-arc basins: new evidence of formation by rifting from the Jurassic of Alexander Island, Antarctica
1 January, 1999 by Philip Leat
The Middle Jurassic–Lower Cretaceous Fossil Bluff Group of Alexander Island, Antarctica represents the fill of a fore-arc basin unconformably overlying an accretionary complex. Like most fore-arc basins, this example had…Modeling tidal currents beneath Filchner-Ronne Ice Shelf and on the adjacent continental shelf: Their effect on mixing and transport
1 January, 1999 by Keith Makinson, Keith Nicholls
A depth-averaged tidal model has been applied to the southern Weddell Sea. The model domain covers the southern continental shelf, including the ocean cavity beneath Filchner-Ronne Ice Shelf. Reasonable agreement…New records of Acari from the sub-Antarctic Prince Edward Islands
1 January, 1999
Sixty species of Acari are recorded from the sub-Antarctic Marion and Prince Edward Islands (the Prince Edward archipelago). Twenty of the 45 species collected on recent expeditions are new and…Read more on New records of Acari from the sub-Antarctic Prince Edward Islands
Synoptic-scale weather systems observed during the FROST project via scatterometer winds
1 January, 1999 by Gareth Marshall, John Turner
Using data obtained during January 1995—the third of three special observing periods associated with the Antarctic First Regional Observing Study of the Troposphere project—over a sector of the Southern Ocean…Eye structure and foraging in King Penguins Aptenodytes patagonicus
1 January, 1999
Anterior eye structure and retinal visual fields were determined in King Penguins Aptenodytes patagonicus using keratometry and an ophthalmoscopic reflex technique. The cornea is relatively flat (radius 32.9 mm) and…Read more on Eye structure and foraging in King Penguins Aptenodytes patagonicus
Can marine mammals be used to monitor oceanographic conditions?
1 January, 1999
The breeding performance of higher predators has often been used to monitor fluctuations in the abundance of important prey stocks in marine ecosystems. The development of electronic data-loggers in recent…Read more on Can marine mammals be used to monitor oceanographic conditions?
Monitoring spatial and temporal variations in the dayside plasmasphere using geomagnetic field line resonances
1 January, 1999 by Mark Clilverd
It is well known that the resonant frequency of geomagnetic field lines is determined by the magnetic field and plasma density. We used cross-phase and related methods to determine the…Neoproterozoic extensional basic magmatism associated with the West Highland granite gneiss in the Moine Supergroup of NW Scotland
1 January, 1999
Pre-tectonic metagabbroic rocks emplaced into the Glenfinnan and Loch Eil groups of the Moine Supergroup give a U–-Pb zircon age of 873 ± 6 Ma. This new age for the…Modeling the ionospheric effects of ion and electron precipitation in the cusp
1 January, 1999
The effect of increased ion production due to the precipitation of both ions and electrons in the cusp region has been studied using a computational model of the high-latitude ionosphere.…Read more on Modeling the ionospheric effects of ion and electron precipitation in the cusp
Estimates of structural complexity in clonal plant morphology: comparisons of grazed and ungrazed Acaena magellanica rhizomes
1 January, 1999
The aim of this study is to examine the information given by various indices of rhizome morphology that describe grazed and ungrazed rhizome systems of Acaena magellanica (Rosaceae). Internode lengths,…Photosynthetic responses of selected Antarctic plants to solar radiation in the southern maritime Antarctic
1 January, 1999
The effects of UV-B exclusion and enhancement of solar radiation on photosynthesis of the two phanerogams which occur in the maritime Antarctic, Deschampsia antarctica and Colobanthus quitensis, and the moss…Relative abundance of large whales around South Georgia (1979–1998
1 January, 1999
To assess large-whale stocks following the cessation of land-based South Georgia whaling in 1965, we report three independent sighting databases: a cruise in 1997, observations from Bird Island (NW of…Read more on Relative abundance of large whales around South Georgia (1979–1998
Surface ablation rates on Moraine Corrie Glacier, Antarctica
1 January, 1999
Moraine Corrie Glacier lies close to the UK summer station Fossil Bluff where meteorological measurements have been taken intermittently since 1961. The elevation of the glacier surface has been measured…Read more on Surface ablation rates on Moraine Corrie Glacier, Antarctica
Rapid selection effects in a short-lived semelparous squid species exposed to exploitation: inferences from the optimisation of life-history functions
1 January, 1999 by Eugene Murphy, Paul Rodhouse
The short life span of cephalopods suggests a potential for high sensitivity to the artificial selective effects of human exploitation. To explore the effects of such selection life-history optimisation was…A very large scale flow burst observed by the SuperDARN radars
1 January, 1999 by Mervyn Freeman, Michael Pinnock
We examined the dynamics of the ionospheric plasma in the dayside sector by using the HF radar data at Iceland West and at Finland from 1100 to 1230 UT on…Read more on A very large scale flow burst observed by the SuperDARN radars
Atmospheric signals and characteristics of accumulation in Dronning Maud Land, Antarctica
1 January, 1999 by John Turner, Robert Mulvaney
With the planned European Programme for Ice Coring in Antarctica in Dronning Maud Land it is important to understand the processes leading to accumulation for successful interpretation of core data.…Modeling the relaxation of red sprite plasma
1 January, 1999
Red sprites consist of multiple ionised columns extending above a thunderstorm from ∼30 km to ∼90 km. Electron densities in these columns are very much larger than the ambient background,…Meesia uliginosa Hedw. (Musci, Meesiaceae) in Antarctica
1 January, 1999
Meesia uliginosa Hedw. and the family Meesiaceae are recorded for the first time in the Antarctic. The species is occasional on Joinville and James Ross Islands near the Trinity Peninsula,…Read more on Meesia uliginosa Hedw. (Musci, Meesiaceae) in Antarctica
Mesozoic-Cenozoic evolution of the North Patagonian Batholith in Aysen, southern Chile
1 January, 1999
A detailed Rb-Sr geochronological and geochemical study has been carried out on granitoids of the North Patagonian batholith in Aysén. The results for 25 plutonic bodies reveal a complex age…Read more on Mesozoic-Cenozoic evolution of the North Patagonian Batholith in Aysen, southern Chile
Laboratory study of the migration of methane sulphonate in firn
1 January, 1999 by Robert Mulvaney
Two 10cm lengths of firn core from the Dyer Plateau (700° 3l'S, 65°0l'W), Antarctic Peninsula, were used to carry out a laboratory experiment to investigate the migration of methane sulphonate,…Read more on Laboratory study of the migration of methane sulphonate in firn
Community recovery following catastrophic iceberg impacts in a soft-sediment shallow-water site at Signy Island, Antarctica
1 January, 1999 by Lloyd Peck
Ice disturbance is possibly the major structuring element of polar nearshore biological communities. Effects range from encapsulation by ice forming on rock substrata to gouging and trampling by bergs. Some…Conjugate observations of the day-side reconnection electric field: A GEM boundary layer campaign
1 January, 1999 by Michael Pinnock
Data from HF-radars are used to make the first simultaneous conjugate measurements of the dayside reconnection electric field. A period of 4 h around local magnetic noon are studied during…Reconstruction of Antarctic palaeoclimates using angiosperm wood anatomy
1 January, 1999
Fossil angiosperm wood is abundant within Cretaceous and Tertiary sediments on the Antarctic Peninsula. The wood, which represents the trunks and branches of large forest trees that once grew on…Read more on Reconstruction of Antarctic palaeoclimates using angiosperm wood anatomy
The first record of fossil atherospermataceous wood from the upper Cretaceous of Antarctica
1 January, 1999
Fossil wood of the Atherospermataceae from the upper Cretaceous of James Ross Island, Antarctica, is described for the first time and represents the earliest record of this family in the…Intracellular pH and energy metabolism in the highly stenothermal Antarctic bivalve Limopsis marionensis as a function of ambient temperature
1 January, 1999 by Lloyd Peck
Changes in oxygen consumption, ammonia excretion and in the acid-base and energy status of various tissues were investigated in the cold stenothermal Antarctic bivalve, Limopsis marionensis, and compared to similar…Mitochondrial function and critical temperature in the Antarctic bivalve, Laternula elliptica
1 January, 1999 by Lloyd Peck
Thermal sensitivities of maximum respiration and proton leakage were compared in gill mitochondria of the Antarctic bivalve Laternula elliptica for an assessment of the contribution of mitochondrial mechanisms to limiting…Global change and the polar regions
1 January, 1999
The Earth System consists of the solid planet, its atmosphere, oceans, ice and biota. These are coupled via a myriad of complex physical, chemical and biological processes, which occur over…HF radar observations of the high-latitude ionospheric convection pattern in the morning sector for northward IMF and motion of the convection reversal boundary
1 January, 1999 by Michael Pinnock
Observations of plasma convection in the morning sector (0000 to 0600 magnetic local time (MLT)) during a period of northward IMF (Bz = +5 to +10 nT) on September 11,…Temperature dependence of inorganic nitrogen uptake: reduced affinity for nitrate at suboptimal temperatures in both algae and bacteria
1 January, 1999
Nitrate utilization and ammonium utilization were studied by using three algal isolates, six bacterial isolates, and a range of temperatures in chemostat and batch cultures. We quantified affinities for both…Predicting changes in the Antarctic krill, Euphausia superba, population at South Georgia
1 January, 1999
Variability in the Southern Ocean is frequently reflected in changes in the abundance of Antarctic krill Euphausia superba and subsequent effects on dependent predators. However, the nature and consequences of…Measurement of chick provisioning in Antarctic prions Pachyptila desolata using an automated weighing system
1 January, 1999
The frequency and mass of meals delivered to ten Antarctic Prion Pachyptila desolata chicks nesting at Bird Island, South Georgia were examined using automated weighing systems, placed in the nest…Krill population dynamics at South Georgia 1991-1997, based on data from predators and nets
1 January, 1999 by Eugene Murphy, Jonathan Watkins
Central to understanding krill population dynamics is knowledge of their population structure. To examine this we used length-frequency distributions from 142 wk of sampling (n = 23996 krill) of 3…Spatial structure of the 12-hour wave in the Antarctic as observed by radar
1 January, 1999
We present radar measurements of the 12-hour wave, a zonal wavenumber 1 westward propagating wave that exists in the southern polar mesopause region winds (Hernandez et al, 1993; Forbes et…Read more on Spatial structure of the 12-hour wave in the Antarctic as observed by radar
Large volume silicic volcanism along the proto-Pacific margin of Gondwana: lithological and stratigraphical investigations from the Antarctic Peninsula
1 January, 1999 by Philip Leat, Teal Riley
Jurassic magmatism in western Gondwana produced the most voluminous episode of continental volcanism in the Phanerozoic era. During the Early to Middle Jurassic, some 2.5–3 million km3 of dominantly basalt,…Experimental and theoretical fracture mechanics applied to Antarctic ice fracture and surface crevassing
1 January, 1999
Recent disintegration of ice shelves on the Antarctic Peninsula has highlighted the need for a better understanding of ice shelf fracture processes generally. In this paper we present a fracture…Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration
1 January, 1999
The rates of plankton community production and respiration were determined from in vitro changes in dissolved inorganic carbon and dissolved oxygen and the incorporation of (NaHCO3)-C-14 at a coastal site…Riometer and HF radar signatures of polar patches
1 January, 1999
Polar patch was the name given originally to a spatially limited enhancement of the 630-nm emission observed in the dark polar cap. More recently, the term has been applied to…Read more on Riometer and HF radar signatures of polar patches
Red sprites, upward lightning, and VLF perturbations
1 January, 1999
In the last decade there has been a great deal of interest in the detection and understanding of phenomena occurring above active thunderstorms. The discovery of the optical phenomena now…Read more on Red sprites, upward lightning, and VLF perturbations
Modeling of subionospheric VLF signal perturbations associated with earthquakes
1 January, 1999 by Mark Clilverd
It has been reported that propagation of very low frequency (VLF) waves in the Earthionosphere waveguide might provide an indication of imminent earthquakes [Hayakawa et al., 1996; Molchanov et al.,…Read more on Modeling of subionospheric VLF signal perturbations associated with earthquakes
Magnetospheric line radiation observations at Halley, Antarctica
1 January, 1999 by Mark Clilverd
Magnetospheric line Radiation (MLR) events are relatively narrowband VLF signals that sometimes drift in frequency, and have been observed in both ground based and satellite data sets. Line radiation has…Read more on Magnetospheric line radiation observations at Halley, Antarctica
VLF scattering from red sprites: Application of numerical modeling
1 January, 1999
Red sprites were discovered by chance in 1989 when a low-light TV system was pointed above an active thunderstorm. Red sprites are associated with columns of ionization in the Earth-ionosphere…Read more on VLF scattering from red sprites: Application of numerical modeling
VLF scattering from red sprites: Vertical columns of ionization in the Earth-ionosphere waveguide
1 January, 1999
Red sprites were discovered by chance in 1989 when a low-light TV system was pointed above an active thunderstorm. Optically, they are observed as clusters of short-lived (∼50 ms) pinkish-red…Slant column measurements of O3 and NO2 during the NDSC intercomparison of zenith-sky UV-visible spectrometers in June 1996
1 January, 1999 by Howard Roscoe
In June 1996, 16 UV-visible sensors from 11 institutes measured spectra of the zenith sky for more than 10 days. Spectra were analysed in real-time to determine slant column amounts…Feasibility of an airborne TV camera as a size spectrometer for cloud droplets in daylight
1 January, 1999 by Howard Roscoe, Thomas Lachlan-Cope
Photographs of clouds taken with a camera with a large aperture ratio must have a short depth of focus to resolve small droplets. Hence the sampling volume is small, which…Ice nucleation and freezing tolerance in New Zealand alpine and lowland weta, Hemideina spp. (Orthoptera; Stenopelmatidae)
1 January, 1999 by Roger Worland
Abstract.The alpine tree weta Hemidiena maori Pictet et Saussure (Orthoptera: Stenopelmatidae) is a large, flightless insect found above the treeline on many of the mountain ranges of the South Island…Lithostratigraphy of Miocene–Recent, alkaline volcanic fields in the Antarctic Peninsula and eastern Ellsworth Land
1 January, 1999
Miocene–Recent alkaline volcanic rocks form numerous outcrops scattered widely throughout the Antarctic Peninsula and eastern Ellsworth Land. They occur mainly as short-lived (typically 1–2 million years) monogenetic volcanic fields but…The upper Cenozoic tephra record in the south polar region: a review
1 January, 1999
Tephrochronology studies in the south polar region are reviewed and evaluated. There have been numerous investigations of tephra layers in ice cores, reflecting the continuing importance of ice cores as…Read more on The upper Cenozoic tephra record in the south polar region: a review
On the relationship between the magnetic and VLF signatures of the substorm expansion phase
1 January, 1999 by Mervyn Freeman
We firmly establish a certain class of post-midnight ELF/VLF wave events as a signature of the substorm expansion phase. These substorm chorus events (SCEs) have been observed near L =…Biological and environmental characteristics of three cosmopolitan mosses dominant in continental Antarctica
1 January, 1999
Bryum argenteum, B. pseudotriquetrum and Ceratodon purpureus are the predominant mosses in Victoria Land, continental Antarctica. All have cosmopolitan distributions and are widespread throughout Antarctica with wide ecological amplitudes resulting…The distribution, abundance and seasonality of pelagic marine invertebrate larvae in the maritime Antarctic
1 January, 1999 by Andrew Clarke, Lloyd Peck
A survey of pelagic larvae was undertaken between November 1992 and February 1995 at Signy Island, Antarctica (60° 43′ S, 45° 36′ W). A diver–towed net and hand–held plankton pump…Reconstruction and break-out model for the Falkland Islands within Gondwana
1 January, 1999
The Falkland Islands are one segment of the Permo-Triassic Gondwanian Fold Belt that was displaced during the fragmentation of Gondwana. Palæomagnetic, structural and palæocurrent data, reviewed in this paper, provide…Read more on Reconstruction and break-out model for the Falkland Islands within Gondwana
Mantle plumes and Antarctica-New Zealand rifting: evidence from mid-Cretaceous mafic dykes
1 January, 1999 by Philip Leat
Ocean floor magnetic anomalies show that New Zealand was the last continental fragment to separate from Antarctica during Gondwana break-up, drifting from Marie Byrd Land, West Antarctica, about 84 Ma…On the mechanism of crustal block rotations in the Central Andes — Comment
1 January, 1999
In this paper Beck (1998)reviews the database of palaeomagnetically observed rotations in the Andean margin of South America, in particular with respect to the well known change in sense of…Read more on On the mechanism of crustal block rotations in the Central Andes — Comment
Status of the Polish FIBEX acoustic data from the West Atlantic
1 January, 1999 by Philip Trathan
Acoustic data from the Polish FIBEX survey in the West Atlantic were analysed using recent acoustic target strength estimates of krill (SC-CAMLR, 1991a). This analysis indicated that the acoustic densities…Read more on Status of the Polish FIBEX acoustic data from the West Atlantic
The potential of archival tags to provide long-term movement and behaviour data for seabirds: First results from wandering albatross Diomedea exulans of South Georgia and the Crozet Islands
1 January, 1999
This paper reports the first attempts at geo-location of albatrosses using miniature data loggers attached to seabirds for extended periods of time. The paper highlights the potential of data loggers…Spatial and temporal variability of net snow accumulation over the Antarctic from ECMWF re-analysis project data
1 January, 1999 by David Vaughan, Gareth Marshall, John Turner
Forecasts from the ECMWF re-analysis project (ERA) covering the period 1979–1993 are used to examine the spatial and temporal distribution of net snow accumulation (precipitation minus evaporation) over the Antarctic…The Auriga Nunataks shear zone: Mesozoic transfer faulting and arc deformation in northwest Palmer Land, Antarctica
1 January, 1999
The Auriga Nunataks shear zone places new tectonic and temporal constraints on the Mesozoic evolution of West Antarctica. The shear zone is a long-lived, arc-orthogonal, ductile transfer fault that preserves…Reassessment of net surface mass balance in Antarctica
1 January, 1999 by David Vaughan
Recent in situ measurements of surface mass balance and improved calculation techniques are used to produce an updated assessment of net surface mass balance over Antarctica. A new elevation model…Read more on Reassessment of net surface mass balance in Antarctica
Reevaluation of coleoid cephalopod relationships based on modified arms in the Jurassic coleoid Mastigophora
1 January, 1999 by Paul Rodhouse
Mastigophora brevipinnis Owen, 1856, is a ‘fossil teuthid’ presently considered to be a member of the coleoid cephalopod Suborder Loligosepiina Jeletzky, which in turn has been placed by various authors…Influence of oceanographic variability on recruitment in the Illex argentinus (Cephalopoda: Ommastrephidae) fishery in the South Atlantic
1 January, 1999 by Claire Waluda, Paul Rodhouse, Philip Trathan
The fishery for Illex argentinus in the Southwest Atlantic is subject to large inter-annual variability in recruitment strength. In this paper we attempt to build a predictive model using sea…Effect of the diel light cycle on the diving behaviour of two bottom feeding marine birds:the blue-eyed shag Phalacrocorax atricepsand the European shag P. aristotelis
1 January, 1999
Consistent diel patterns in foraging depths have been recorded in several avian predators which feed on pelagic prey, but nothing is known about such effects in bottom feeding seabirds. In…The spring mesozooplankton community at South Georgia: a comparison of shelf and oceanic sites
1 January, 1999
Mesozooplankton (predominantly 200–2000 μm) were sampled at a shelf and an oceanic station close to South Georgia, South Atlantic, during austral spring (October/November) 1997. Onshelf zooplankton biomass was extremely high at…Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
1 January, 1999 by Jonathan Watkins
There is considerable spatial structure within the South Georgia krill-based ecosystem in terms of predator demand, commercial fishery pressure and krill abundance. Here we investigate the hypothesis that there is…Read more on Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
1 January, 1999 by Jonathan Watkins
A composite recruitment index based on density data derived from acoustic surveys and on length-frequency data obtained from either target or station net hauls is described. This composite index is…Robustness of collective behaviour in strongly driven avalanche models: Magnetospheric implications
1 January, 1999
The hypothesis of self-organised criticality (SOC) predicts that certain open dissipative systems evolve to a critical state where all energy release statistics display power law distributions for event occurrence, size…Geographical variation in morphometry of black-browed and grey-headed albatrosses from four sites
1 January, 1999
Differences in morphometry between five populations of black-browed albatrosses (Diomedea melanophrys) and four populations of grey-headed albatrosses (D. chrysostoma) are examined. Two clear groups of black-browed albatrosses are evident, with…Exploitation of the marine environment by two sympatric albatrosses in the Pacific Southern Ocean
1 January, 1999
The marine habitat exploited by black-browed Diomedea melanophrys and grey-headed albatrosses D. chrysostoma breeding at Campbell Island, New Zealand, was studied using satellite telemetry. Data were analysed in relation to…Foraging white-chinned petrels Procellaria aequinoctialis at risk: from the tropics to Antarctica
1 January, 1999
In the Southern Ocean white-chinned petrels Procellaria aequinoctialis form the majority of the bird bycatch in longline fisheries. Satellite tracking of breeding birds from the Crozet islands and from South…A comparison of chlorophyll/nutrient dynamics at two survey sites near South Georgia, and the potential role of planktonic nitrogen recycled by land-based predators
1 January, 1999
There is an apparent mismatch between the high carbon demand of seals and seabirds breeding on the subantarctic island of South Georgia and the overall low primary production measured in…Mafic dike swarms in the South Shetland Islands volcanic arc: Unravelling multiepisodic magmatism related to subduction and continental rifting
1 January, 1999
Eight groups of mafic dikes and related high-level stocks cut Triassic accretionary complex and Mesozoic magmatic arc formations on Livingston Island. Some are affected by silicic/sericitic alteration, related to Cretaceous…Comparison of Holocene electrical records from Dome C and Vostok, Antarctica
1 January, 1999 by Eric Wolff
As part of the European Project for Ice Coring in Antarctica, a new deep ice core is being drilled at Dome C. Two electrical methods have been used on the…Read more on Comparison of Holocene electrical records from Dome C and Vostok, Antarctica
Antarctic snow record of cadmium, copper, and zinc content during the twentieth century
1 January, 1999 by Eric Wolff
A snowpit in Coats Land, Antarctica, has been sampled in order to obtain a record of Cd, Cu and Zn covering the period 1923–1986. The snowpit record gives an indication…Read more on Antarctic snow record of cadmium, copper, and zinc content during the twentieth century
Ice-nucleating bacteria from the guts of two sub-Antarctic beetles,Hydromedion sparsutum and Perimylops antarcticus(Perimylopidae)
1 January, 1999 by Roger Worland, William Block
The site of ice nucleation in the freeze-tolerant, sub-Antarctic beetleHydromedion sparsutumhas been investigated. Ice+bacteria, active at above −2.0°C, were isolated from the guts of beetles and identified as a fluorescentPseudomonasspecies.…Functional biomolecules of Antarctic stromatolitic and endolithic cyanobacterial communities
1 January, 1999
For activity and survival in extreme terrestrial Antarctic habitats, lithobiontic cyanobacteria depend on key biomolecules for protection against environmental stress and for optimization of growth conditions. Their ability to synthesize…An interhemispheric study of the ground magnetic and ionospheric electric fields during the substorm growth phase and expansion phase onset
1 January, 1999
HF radar data during equinoctial, small IMF By conditions have enabled the substorm growth phase to be studied in both hemispheres. This has revealed highly conjugate behavior during the substorm…Relationship between chemistry of air, fresh snow and firn cores for aerosol species in coastal Antarctica
20 May, 1998 by Eric Wolff, John Hall, Robert Mulvaney
Aerosol and fresh snow concentrations have been determined at three coastal Antarctic stations, Dumont d'Urville, Halley, and Neumayer. Model estimates suggest that dry deposition, including that caused by wind pumping,…Concentrations and seasonal cycle of black carbon in aerosol at a coastal Antarctic station
20 May, 1998 by Eric Wolff
Aerosol black carbon concentrations have been measured between 1992 and 1995 at Halley station using an aethalometer. The complete record is dominated by a number of events of high concentration…Coastal Antarctic aerosol and snowfall chemistry
20 May, 1998 by Eric Wolff
Aerosol samples have been collected at three stations on the coast of Antarctica. At Dumont d'Urville Station, samples have been collected for 4 years, at Halley Station for 2 years,…Read more on Coastal Antarctic aerosol and snowfall chemistry