Archives: Publications
Remotely sensed mesoscale oceanography of the central Eastern Pacific and recruitment variability in Dosidicus gigas
1 January, 2006 by Claire Waluda, Paul Rodhouse
ABSTRACT: The Jumbo flying squid Dosidicus gigas has a short life span and is subject to rapid changes in population size. This species inhabits the Eastern Pacific, one of the…Influence of the ENSO cycle on the light-fishery for Dosidicus gigas in the Peru Current: an analysis of remotely sensed data
1 January, 2006 by Claire Waluda, Paul Rodhouse
Dosidicus gigas (the jumbo flying squid) supports a major fishery in the eastern Pacific Ocean and exhibits large fluctuations in abundance from year to year. The commercial fishery consists of…Plankton community structure and variability in the Scotia Sea: austral summer 2003
1 January, 2006 by Peter Ward, Sally Thorpe
Plankton community structure in the Scotia Sea was investigated during January/early February 2003 based on phytoplankton cell counts from 20 m depth and mesozooplankton counts from 0 to 400 m…Read more on Plankton community structure and variability in the Scotia Sea: austral summer 2003
The autumn mesozooplankton community at South Georgia: biomass, population structure and vertical distribution
1 January, 2006 by Geraint Tarling, Peter Ward
Mesozooplankton were sampled at shelf and oceanic stations close to South Georgia, South Atlantic during austral autumn 2004 with a Longhurst Hardy Plankton Recorder. Onshelf biomass ranged from 2.18 to…Distribution of post-weaning Antarctic fur seal Arctocephalus gazella pups at South Georgia
1 January, 2006 by Andrew Fleming, Jaume Forcada, Philip Trathan
Potentially some of the biggest gaps in our knowledge about the ecology of Antarctic fur seals (Arctocephalus gazella) relate to juvenile animals. We investigated the at-sea distribution of five male…A description of larval and early juvenile development in Paralomis spinosissima (Decapoda: Anomura: Paguroidea: Lithodidae) from South Georgia waters (Southern Ocean)
1 January, 2006 by Mark Belchier
The early ontogenetic stages of Paralomis spinosissima Birstein and Vinogradow, 1972, are described in detail and illustrated, with notes on morphological variability observed. Larval and early juvenile development was described…DNA barcoding: a molecular tool to identify Antarctic marine larvae
1 January, 2006 by David Barnes, Melody Clark
To begin to understand overall patterns and processes influencing marine populations, communities and ecosystems, it is important to determine the timing, duration, mode and dispersal of larvae. However, few studies…Read more on DNA barcoding: a molecular tool to identify Antarctic marine larvae
Precipitation trapped in datable rock-forming minerals: estimating Antarctic palaeoelevations – a discussion
1 January, 2006
Meteoric water that interacted with minerals during retrogressive metamorphism and hydrothermalism in the late-stage of mountain building processes contains hydrogen and oxygen isotopes that are potential proxies for palaeoelevation reconstruction…Late Miocene paleoenvironment of the Lambert Glacier embayment, East Antarctica, evident from: mollusc paleontology, sedimentology and geochemistry
1 January, 2006 by Claus-Dieter Hillenbrand
The Upper Miocene (10.7–9.0 Ma) Battye Glacier Formation was deposited 250 km inland from the modern Amery Ice Shelf edge in Prydz Bay, East Antarctica. The composition of clay minerals…Anisotropic model for granulated sea ice dynamics
1 January, 2006
A continuum model describing sea ice as a layer of granulated thick ice, consisting of many rigid, brittle floes, intersected by long and narrow regions of thinner ice, known as…Read more on Anisotropic model for granulated sea ice dynamics
Modelling the rheology of sea ice as a collection of diamond-shaped floes
1 January, 2006
In polar oceans, seawater freezes to form a layer of sea ice of several metres thickness that can cover up to 8% of the Earth’s surface. The modelled sea ice…Read more on Modelling the rheology of sea ice as a collection of diamond-shaped floes
Late Miocene asterozoans (Echinodermata) from the James Ross Island Volcanic Group
1 January, 2006 by Joanne Johnson
Asterozoans (Echinodermata) of Late Miocene age (6.02 ± 0.12 Ma) are preserved as external moulds in water-lain tuffs of the James Ross Island Volcanic Group (JRIVG), James Ross Island, Antarctic…Read more on Late Miocene asterozoans (Echinodermata) from the James Ross Island Volcanic Group
Evidence that Early Carboniferous ostracods colonised coastal flood plain brackish water environments
1 January, 2006
A study of the stable isotope composition (δ18O, δ13C) of biogenic (ostracod, mollusc) and authigenic carbonates in the Ballagan Formation, Lower Carboniferous of Scotland, coupled with evidence from sedimentology and…The type material of the Miocene to Recent species of Globigerinoides sacculifer (Brady) revisited
1 January, 2006
The detailed test morphology of the type suite of Globigerinoides sacculifer (Brady) is illustrated for the first time since the species was identified in 1877. Fossil representatives of this species…Mass balance of the Antarctic ice sheet
1 January, 2006 by Gareth Marshall
The Antarctic contribution to sea-level rise has long been uncertain. While regional variability in ice dynamics has been revealed, a picture of mass changes throughout the continental ice sheet is…Southern Ocean sea-ice extent, productivity and iron flux over the past eight glacial cycles
1 January, 2006 by Eric Wolff, Robert Mulvaney
Sea ice and dust flux increased greatly in the Southern Ocean during the last glacial period. Palaeorecords provide contradictory evidence about marine productivity in this region, but beyond one glacial…Antarctic Peninsula sea levels: A real-time system for monitoring Drake Passage transport
1 January, 2006 by Michael Meredith
Sub-surface pressure (SSP) data from tide gauges at three bases on the Pacific coast of the Antarctic Peninsula, together with SSP information from a bottom pressure recorder deployed on the…Supercooling point frequency distributions in Collembola are affected by moulting
1 January, 2006 by Roger Worland
1. Many arthropods depress the freezing point of their body fluids (supercool) to avoid freezing at subzero temperatures. This is normally a seasonal response and is achieved by the production…Read more on Supercooling point frequency distributions in Collembola are affected by moulting
Determining prey distribution patterns from stomach-contents of satellite-tracked high-predators of the Southern Ocean
1 January, 2006
Abstract The distribution of many cephalopod, crustacean and fish species in the Southern Ocean, and adjacent waters, is poorly known, particularly during times of the year when research surveys are…Assessment of Calanus finmarchicus growth and dormancy using the aminoacyl-tRNA synthetases method
1 January, 2006
We obtained growth rates of the copepod Calanus finmarchicus at different locations across the North Atlantic between May 1998 and June 2004. Animals were incubated for 2–9 days and fed…The Moray Firth directed squid fishery
1 January, 2006 by Martin Collins
In summer 2003, the usually small directed fishery for the squid Loligo forbesi in the Moray Firth off the northeast coast of Scotland (UK) generated unusually high catches. This fishery,…The effects of temperature on peripheral neuronal function in eurythermal and stenothermal crustaceans
1 January, 2006 by Lloyd Peck
To determine whether neuronal function in Antarctic crustaceans is adapted to the low and narrow range of temperatures at which these animals live, we have compared conduction velocities in the…The effects of temperature on walking and righting in temperate and Antarctic crustaceans
1 January, 2006 by Lloyd Peck
Antarctic marine invertebrates live in a cold, thermally stable environment and cannot tolerate large changes in body temperature (i.e. they are stenothermal). Their temperate relatives, by contrast, are eurythermal, living…Asian dustfall in the St. Elias Mountains, Yukon, Canada
1 January, 2006
In April 2001, a major atmospheric dustfall event occurred in the St. Elias Mountains, Yukon Territory, Canada. Field samples were collected and analyzed for particle size, mineralogy, chemical composition and…Read more on Asian dustfall in the St. Elias Mountains, Yukon, Canada
Clowning around in a tuxedo at 50 below
16 December, 2005
Review of the film March of the PenguinsPlanetary wave coupling from the stratosphere to the thermosphere during the 2002 Southern Hemisphere pre-stratwarm period
1 December, 2005
Temperature observations between 20 and 120 km from the SABER instrument on the TIMED spacecraft are used to investigate the nature of planetary wave activity during the 60 days prior…Modelling the outer radiation belt as a complex system in a self-organised critical state
11 November, 2005 by Nigel Meredith
The dynamic behaviour of the outer electron radiation belt makes this area of geo-space a candidate for the concept of self-organized criticality. It is shown here that frequency distributions of…Mesospheric planetary waves over Antarctica during 2002
1 November, 2005
Wind measurements from a series of atmospheric radars located around Antarctica have been used to characterize the mesospheric planetary-wave field during the winter of 2002. Combining winds from the medium-frequency…Read more on Mesospheric planetary waves over Antarctica during 2002
Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century
1 October, 2005 by John King, Michael Meredith
The climate of the Western Antarctic Peninsula (WAP) is the most rapidly changing in the Southern Hemisphere, with a rise in atmospheric temperature of nearly 3°C since 1951 and associated…Simulation of the outer radiation belt electrons near geosynchronous orbit including both radial diffusion and resonant interaction with Whistler-mode chorus waves
1 October, 2005 by Nigel Meredith, Richard Horne, Sarah Glauert
We present the first simulation results for electrons in the outer radiation belt near geosynchronous orbit, where radial diffusion and resonant interactions with whistler-mode chorus outside the plasmasphere are taken…Anomalous winter hydroxyl temperatures at 69°S during 2002 in a multiyear context
1 June, 2005
Hydroxyl airglow temperatures measured over Davis station, Antarctica (68°S, 78°E) in 2002 are compared to an 8-year climatological mean. The 2002 winter average temperature was 5.1 ± 0.8K warmer than…Read more on Anomalous winter hydroxyl temperatures at 69°S during 2002 in a multiyear context
High frequency atmospheric gravity-wave properties using Fe-lidar and OH-imager observations
1 May, 2005
Simultaneous iron resonance lidar density profiles, OH intensity images and MF-radar wind measurements have been used to determine the horizontal and vertical components of high-frequency (Observations of stratospheric warmings and mesospheric coolings by the TIMED SABER instrument
1 May, 2005
We used temperature data from the Sounding of the Atmosphere with Broadband Emission Radiometry (SABER) on the the NASA TIMED satellite to quantify the connection between temperatures in the stratosphere…The European Project for Ice Coring in Antarctica
11 April, 2005 by Eric Wolff
Ice cores have provided many of the key pieces of evidence about past changes in climate and in forcing factors for climate. In particular, the core from Vostok (Antarctica) shows…Read more on The European Project for Ice Coring in Antarctica
Sea ice concentrations in the Weddell Sea: A comparison of SSM/I, ULS, and GCM data
1 April, 2005
The sea ice fraction in the interior of the pack, especially in winter, is important for climate studies and for validation of sea ice models. When ice concentration is high,…Read more on Sea ice concentrations in the Weddell Sea: A comparison of SSM/I, ULS, and GCM data
Recent ice loss from the Fleming and other glaciers, Wordie Bay, West Antarctic Peninsula
1 April, 2005 by David Vaughan, Hamish Pritchard, John Turner
Satellite radar interferometry data from 1995 to 2004, and airborne ice thickness data from 2002, reveal that the glaciers flowing into former Wordie Ice Shelf, West Antarctic Peninsula, discharge 6.8…A statistical comparison of SuperDARN spectral width boundaries and DMSP particle precipitation boundaries in the morning sector ionosphere
30 March, 2005 by Gareth Chisham, Mervyn Freeman
Determining reliable proxies for the ionospheric signature of the open-closed field line boundary (OCB) is crucial for making accurate ionospheric measurements of many magnetospheric processes (e.g. magnetic reconnection). This study…A multi-spacecraft survey of magnetic field line draping in the dayside magnetosheath
30 March, 2005
When the interplanetary magnetic field (IMF) encounters the Earth's magnetosphere, it is compressed and distorted. This distortion is known as draping, and plays an important role in the interaction between…Read more on A multi-spacecraft survey of magnetic field line draping in the dayside magnetosheath
Polar mesosphere summer echoes (PMSE) at Halley (76°S, 27°W), Antarctica
1 March, 2005 by Mark Clilverd, Michael Rose
Polar Mesosphere Summer Echoes (PMSE) are a pointer to summer mesospheric conditions and have fuelled the debate over temperature differences between the Antarctic and Arctic mesopause regions. However few PMSE…Read more on Polar mesosphere summer echoes (PMSE) at Halley (76°S, 27°W), Antarctica
Fractal reconnection structures on the magnetopause
1 February, 2005 by Mervyn Freeman
Simple laminar flow models of the magnetosheath plasma lead to predictions of large-scale reconnection structures on the dayside magnetopause. There is observational evidence from the ionosphere that such structures exist.…Read more on Fractal reconnection structures on the magnetopause
The 2002 split ozone hole – the wave of the century?
1 January, 2005 by Howard Roscoe
No abstract available for this article.Read more on The 2002 split ozone hole – the wave of the century?
Terrane processes at the margins of Gondwana
1 January, 2005 by Philip Leat
The process of terrane accretion is vital to the understanding of the formation of continental crust. Accretionary orogens affect over half of the globe and have a distinctively different evolution…Genetic structure and history of populations of the deep-sea fish Helicolenus dactylopterus (Delaroche, 1809) inferred from mtDNA sequence analysis
1 January, 2005
Helicolenus dactylopterus is an Atlantic benthopelagic fish species inhabiting high-energy habitats on continental slopes, seamounts and islands. Partial sequences of the mitochondrial control region (D-loop) and cytochrome b (cyt b)…Nd and Sr isotopic signatures of metasedimentary rocks around the South Pacific margin and implications for their provenance
1 January, 2005 by Philip Leat
An Nd-Sr isotope database, including c. 200 new analyses, is presented for Palaeozoic and Mesozoic metasedimentary successions extending through southeastern Australia, New Zealand, West Antarctica and the Antarctic Peninsula to…Submillennial variations in ocean conditions during deglaciation based on diatom assemblages from the southwest Atlantic
1 January, 2005 by Claire Allen
We present a high-resolution paleoceanographic record of deglaciation based on diatom assemblages from a core located just south of the Polar Front in the southwest Atlantic. Core KC073 is from…Ice-shelf microtopography observed using satellite thermal imagery
1 January, 2005
Small anomalies in ice-shelf surface temperature correlate with measured microtopography. Clear-sky thermal infrared (TIR) images of the Brunt Ice Shelf, Antarctica, frequently show persistent patterns of anomalous snow surface temperatures.…Read more on Ice-shelf microtopography observed using satellite thermal imagery
An autonomous Doppler Sodar wind profiling system
1 January, 2005
An autonomous Doppler sodar wind profiling system has been designed, built, tested, and then deployed for 2 years at a remote site in Coats Land, Antarctica. The system is designed…Read more on An autonomous Doppler Sodar wind profiling system
Origin, sequence stratigraphy and depositional environment of an upper Ordovician (Hirnantian) deglacial black shale, Jordan
1 January, 2005
The upper Ordovician succession of Jordan was located ~60°S, less than 100 km from the Hirnantian ice sheet margin. New graptolite dates indicate glaciation ended in Jordan in the late…Volume sensitivity of Vatnajökull Ice Cap, Iceland, to perturbations in equilibrium line altitude
1 January, 2005 by Hilmar Gudmundsson
The sensitivity of Vatnajökull ice cap, Iceland, to perturbations in equilibrium line altitude (ELA) is analyzed by performing a series of model experiments using a shallow ice approximation (SIA) flow…Invertebrate muscle performance at high latitude: swimming activity in the Antarctic scallop, Adamussium colbecki
1 January, 2005 by Lloyd Peck
The escape swimming performance of the Antarctic scallop, Adamussium colbecki, was measured in animals acclimated for 6 weeks to –1, 0 or 2°C and tested at –1.5 to +1.5°C. Clap…Body and resource size at the land–sea interface
1 January, 2005 by David Barnes
Body size in animals varies with many parameters, amongst them taxonomic affiliation, lifestyle and ambient environment oxygen levels. Size has considerable implication to possibilities for animals; for example, parasites need…Read more on Body and resource size at the land–sea interface
Life, death and fighting at high latitudes: a review
1 January, 2005 by David Barnes
In earth's history, having two frozen polar regions is unusual. Not only do these regions experience extreme light climates and associated primary productivity, but freezing sea temperatures and seasonally intense…Read more on Life, death and fighting at high latitudes: a review
Drifting plastic and its consequences for sessile organism dispersal in the Atlantic Ocean
1 January, 2005 by David Barnes, Peter Milner, Peter Milner
Organisms have travelled the Atlantic Ocean as neuston and have rafted on natural marine debris for millions of years. Shipping increased opportunities for marine organism travel mere thousands of years…Extremes of metabolic strategy in Antarctic Bryozoa
1 January, 2005 by David Barnes, Lloyd Peck
The physiology of many organisms in many places varies with seasonality of environment characteristics. Polar marine environments are amongst the least and most seasonal. For example, sea temperature varies byRead more on Extremes of metabolic strategy in Antarctic Bryozoa
Changing chain: past, present and future of the Scotia Arc’s and Antarctica’s shallow benthic communities
1 January, 2005 by David Barnes
The Scotia Arc links Patagonia to the Antarctic Peninsula. This island chain has changed considerably since Antarctica’s geographic and thermal isolation from other land and water masses. Now its rates…Remote islands reveal rapid rise of Southern Hemisphere sea debris
1 January, 2005 by David Barnes
A generation of people have now grown up thinking that shorelines strewn with anthropogenic artefacts is normal. Yet this pehnomenon is just a few decades old and aesthetics and beach…Read more on Remote islands reveal rapid rise of Southern Hemisphere sea debris
Odyssey of stow-away noctuid moths to southern polar islands
1 January, 2005 by David Barnes, Peter Convey
High southern latitude island environments are unusual in having relatively low or, in some cases, no non-indigenous species (NIS). Here we describe the accidental transport and survivorship of moths (Lepidoptera,…Read more on Odyssey of stow-away noctuid moths to southern polar islands
Bipolar patterns of intraspecific competition in bryozoans
1 January, 2005 by David Barnes
Polar shores probably represent the most dynamic and extremely disturbed environments on the globe. Nevertheless intense battles amongst sessile organisms for space are commonplace on hard substrata, mainly between fast-growing…Read more on Bipolar patterns of intraspecific competition in bryozoans
Low colonisation on artificial substrata in arctic Spitsbergen
1 January, 2005 by David Barnes
High polar communities tend to be young because of the frequent and intense impact of ice (scour), so colonisation patterns are particularly important. Yet, despite a wealth of studies at…Read more on Low colonisation on artificial substrata in arctic Spitsbergen
Relative sea level curves for the South Shetland Islands and Marguerite Bay, Antarctic Peninsula
1 January, 2005 by Dominic Hodgson, James Smith
This paper presents preliminary relative sea level curves for the Marguerite Bay region and for the South Shetland Islands. The Marguerite Bay curve is constrained by both new and previously…Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula
1 January, 2005 by Dominic Hodgson, Stephen Roberts
The recent collapse of several Antarctic Peninsula ice shelves has been linked to rapid regional atmospheric warming during the twentieth century. New high-resolution lake sediment records of Holocene ice-shelf behavior…Read more on Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula
Snow chemistry across Antarctica
1 January, 2005 by Eric Wolff, Robert Mulvaney
An updated compilation of published and new data of major-ion (Ca, Cl, K, Mg, Na, NO3, SO4) and methylsulfonate (MS) concentrations in snow from 520 Antarctic sites is provided by…Combined morphological and molecular analysis of individual nematodes through short-term preservation in formalin
1 January, 2005
Small metazoans such as marine nematodes are increasingly identified using both molecular and morphological techniques. Formalin is the preferred fixative for morphological analysis but specimens become unsuitable for molecular study…Risks posed to the Antarctic marine environment by acoustic instruments: a structured analysis
1 January, 2005 by Robert Larter
The risks posed by a range of acoustic scientific instruments were assessed by the construction of matrices of scale and likelihood. We recognized six levels of impact ranging from none…An overview of Calanus helgolandicus ecology in European waters
1 January, 2005
We review current knowledge and understanding of the biology and ecology of the calanoid copepod Calanus helgolandicus in European waters, as well as provide a collaborative synthesis of data from…Read more on An overview of Calanus helgolandicus ecology in European waters
Quantitative characterization of shallow marine benthic assemblages at Ryder Bay, Adelaide Island, Antarctica
1 January, 2005
Non-destructive photographic techniques are valuable for surveying benthic epifauna in sensitive areas. Inherent in these techniques, however, are selectivity biases related to the scale at which surveys are conducted. Such…Seasonality of recruitment in Antarctic sessile marine benthos
1 January, 2005
Recruitment is a principal factor determining the establishment, diversity and persistence of assemblages in marine benthic ecosystems. Despite considerable research in temperate and tropical latitudes, however, almost nothing is known…Read more on Seasonality of recruitment in Antarctic sessile marine benthos
A new species of Paecilomyces isolated from the Antarctic springtail Cryptopygus antarcticus
1 January, 2005 by David Pearce, Melody Clark
A monophialidic species of Paecilomyces was isolated from the Antarctic springtail Cryptopygus antarcticus in the peninsular Antarctic. The fungus emerged through the carapace of dead arthropods during incubation at 4oC,…The impact of molecular data in fungal systematics
1 January, 2005
Molecular data has been used in fungal systematics since the 1970s, and its rate of incorporation has increased significantly in recent years. In phylogeny molecular data has already been used…Read more on The impact of molecular data in fungal systematics
Omnivory and predation impact of the calanoid copepod Boeckella poppei in a maritime Antarctic lake
1 January, 2005
The copepod Boeckella poppei is a major species in high latitude lakes of the Southern Hemisphere. In such lakes the reduced diversity of metazoans contrasts with a rich microbial assemblage,…Macrofossil floras of the Latady Basin, Antarctic Peninsula
1 January, 2005
New collections of plant material from the Merrick and Sweeney Mountains provide further evidence of Jurassic floral diversity in the Antarctic Peninsula. Eighteen taxa are recognised, including sphenophytes (Equisetum), ferns…Read more on Macrofossil floras of the Latady Basin, Antarctic Peninsula
Ferns from the Cretaceous of Alexander Island, Antarctica: Implications for Cretaceous phytogeography of the Southern Hemisphere
1 January, 2005
Six new records of ferns from the late Albian flora of Alexander Island, Antarctic Peninsula, provide further evidence for a widespread Cretaceous Austral flora. Phyllopteroides antarctica sp. nov. is the…Taxonomic turnover and abundance in Cretaceous to Tertiary wood floras of Antarctica: implications for changes in forest ecology
1 January, 2005
Based on the temporal distribution, abundance, and taxonomic composition of wood floras, four phases of vegetation development are recognized through the Cretaceous to Early Tertiary of the Antarctic Peninsula: (1)…A new Eocene Araucaria from Seymour Island, Antarctica: evidence from growth form and bark morphology
1 January, 2005
Araucarian conifers are an important component of Cretaceous through Paleogene floras in the Antarctic Pensinsula. A well-preserved Eocene petrified trunk from Seymour Island, Antarctica reveals the growth form and bark…The secretin G-protein-coupled receptor family: teleost receptors
1 January, 2005 by Melody Clark
Twenty-one members of the secretin family (family 2) of G-protein-coupled receptors (GPCRs) were identified via directed cloning and data-mining of the Fugu Genome Consortium database, representing the most comprehensive description…Read more on The secretin G-protein-coupled receptor family: teleost receptors
Scaling collapse and structure functions: identifying self-affinity in finite length time series
1 January, 2005
Empirical determination of the scaling properties and exponents of time series presents a formidable challenge in testing, and developing, a theoretical understanding of turbulence and other out-of-equilibrium phenomena. We discuss…Scaling and commonality in anomalous fluctuation statistics in models for turbulence and ferromagnetism
1 January, 2005
Recently, Portelli et al (2003), Phys. Rev. Lett. 90 104501 have semi-numerically obtained a functional form of the probability distribution of fluctuations in the total energy flow in a model…A statistical comparison of SuperDARN spectral width boundaries and DMSP particle precipitation boundaries in the afternoon sector ionosphere
1 January, 2005 by Gareth Chisham, Mai Mai Lam, Mervyn Freeman
The open-closed magnetic field line boundary (OCB) is best measured at the foot points of the boundary in the Earth's ionosphere where continuous and extensive spatiotemporal measurements can be made.…The accuracy of using the spectral width boundary measured in off-meridional SuperDARN HF radar beams as a proxy for the open-closed field line boundary
1 January, 2005 by Gareth Chisham, Mervyn Freeman
Determining reliable proxies for the ionospheric signature of the open-closed field line boundary (OCB) is crucial for making accurate measurements of magnetic reconnection. This study compares the latitudes of spectral…New proxy for reconnection
1 January, 2005 by Gareth Chisham
Gareth Chisham describes a new method for remotely sensing reconnection in the magnetosphere. This article is based on his poster, which won a 2005 Rishbeth Prize.How isolated is Antarctica?
1 January, 2005 by Andrew Clarke, Dominic Hodgson, David Barnes
The traditional view of Antarctica and the surrounding Southern Ocean as an isolated system is now being challenged by the recent discovery at the Antarctic Peninsula of adult spider crabs…Reconstructing the long-term aa index
1 January, 2005 by Mark Clilverd
The robustness of the aa geomagnetic index is of critical importance to the debate about the previously reported doubling of the solar coronal magnetic field in the last 100 years,…Modeling a large solar proton event in the southern polar atmosphere
1 January, 2005 by Mark Clilverd
We have modeled the effects of the Sodankylä Ion Chemistry model (SIC) electron density profiles on VLF propagation across the southern polar region during the first few days of the…Read more on Modeling a large solar proton event in the southern polar atmosphere
Effects of a simulated Martian UV flux on the cyanobacterium, Chroococcidiopsis sp. 029
1 January, 2005
Dried monolayers of Chroococcidiopsis sp. 029, a desiccation-tolerant, endolithic cyanobacterium, were exposed to a simulated martian-surface UV and visible light flux, which may also approximate to the worst-case scenario for…Read more on Effects of a simulated Martian UV flux on the cyanobacterium, Chroococcidiopsis sp. 029
Trends in body size across an environmental gradient: A differential response in scavenging and non-scavenging demersal deep-sea fish
1 January, 2005 by Martin Collins
Body size trends across environmental gradients are widely reported but poorly understood. Here, we investigate contrasting relationships between size (body mass) and depth in the scavenging and predatory demersal ichthyofauna…Opisthoteuthis borealis: a new species of cirrate octopod from Greenland waters
1 January, 2005 by Martin Collins
A new species of cirrate octopod, Opisthoteuthis borealis sp. nov. is described from specimens caught at depths of 957–1321 m off the coast of Greenland. Opisthoteuthis borealis sp. nov. is…Read more on Opisthoteuthis borealis: a new species of cirrate octopod from Greenland waters
Recent lepidopteran records from sub-Antarctic South Georgia
1 January, 2005 by Peter Convey
No Lepidoptera (butterflies and moths) are known to be residents of South Georgia. This paper presents new records of three lepidopterans on the island. Two, Agrotis ipsilon (Noctuidae) and Plutella…Read more on Recent lepidopteran records from sub-Antarctic South Georgia
Exceptional tardigrade-dominated ecosystems in Ellsworth Land, Antarctica
1 January, 2005 by Peter Convey, Sandra McInnes, Sandra McInnes
We describe a terrestrial faunal community including only Tardigrada and Rotifera, present on inland nunataks of Ellsworth Land, Antarctica (∼75°–77° S, 70°–73° W). The fauna is exceptional in its simplicity,…Read more on Exceptional tardigrade-dominated ecosystems in Ellsworth Land, Antarctica