Publications

13873 to 13884 of 13980 results

1. Incursion and excursion of Antarctic biota: past, present and future

   Aim To investigate the major paradigms of intense isolation and little anthropogenic influence around Antarctica and to examine the timings and scales of the modification of the southern polar biota. […]

   Read more of: Incursion and excursion of Antarctic biota: past, present and future

2. Shallow benthic communities of South Georgia Island

   Benthic communities in several fjords and sheltered bays of the north coast of South Georgia Island were examined using SCUBA and shore sampling in November 2004. It is one of […]

   Read more of: Shallow benthic communities of South Georgia Island

3. Reproductive strategies of sub-Antarctic lithodid crabs vary with habitat depth

   We present the first fecundity and egg size data for three species of lithodid crab from Antarctic waters south of the Polar Front, caught in the fisheries operating around the […]

   Read more of: Reproductive strategies of sub-Antarctic lithodid crabs vary with habitat depth

4. Interpreting ancient ice in a shallow ice core from the South Yamato (Antarctica) blue ice area using flow modeling and compositional matching to deep ice cores

   We explore methods of dating a 101 m ice core from a bare ice ablation area in the Yamato Mountains, Dronning Maud Land, East Antarctica. There are two unknowns, the […]

   Read more of: Interpreting ancient ice in a shallow ice core from the South Yamato (Antarctica) blue ice area using flow modeling and compositional matching to deep ice cores

5. Energetic outer zone electron loss timescales during low geomagnetic activity

   Following enhanced magnetic activity the fluxes of energetic electrons in the Earth’s outer radiation belt gradually decay to quiet-time levels. We use CRRES observations to estimate the energetic electron loss […]

   Read more of: Energetic outer zone electron loss timescales during low geomagnetic activity

6. Origins of plasmaspheric hiss

   Plasmaspheric hiss is an electromagnetic wave emission responsible for electron loss from the radiation belts, particularly in the slot region (2 < L < 3). There are two leading theories […]

   Read more of: Origins of plasmaspheric hiss

7. Circumpolar response of Southern Ocean eddy activity to a change in the Southern Annular Mode

   Analysis of satellite altimeter data reveals anomalously high Eddy Kinetic Energy (EKE) in the Antarctic Circumpolar Current (ACC) during the period 2000–2002. Around 2–3 years earlier (1998), the circumpolar eastward […]

   Read more of: Circumpolar response of Southern Ocean eddy activity to a change in the Southern Annular Mode

8. Monitoring microbial predator-prey interactions: an experimental study using fatty acid biomarker and compound-specific stable isotope techniques

   Naturally occurring microbial communities are complex, with autotrophs and heterotrophs often similarly sized and impossible to separate by conventional size fractionation approaches. However, if it was possible to identify specific […]

   Read more of: Monitoring microbial predator-prey interactions: an experimental study using fatty acid biomarker and compound-specific stable isotope techniques

9. Year-round distribution of white-chinned petrels from South Georgia: relationships with oceanography and fisheries

   The white-chinned petrel Procellaria aequinoctialis is a medium-sized procellariiform with a circumpolar subAntarctic breeding distribution. Feeding during both day and night, and often competing aggressively for bait, offal and discards, […]

   Read more of: Year-round distribution of white-chinned petrels from South Georgia: relationships with oceanography and fisheries

10. Cluster observations of broadband electromagnetic waves in and around a reconnection region in the Earth’s magnetotail current sheet

    We present an analysis of the electric and magnetic wave spectra on kinetic scales during several crossings of a reconnecting current sheet. The spectra were measured from 1 Hz or […]

    Read more of: Cluster observations of broadband electromagnetic waves in and around a reconnection region in the Earth’s magnetotail current sheet

11. Anomalous resistivity and the non-linear evolution of the ion-acoustic instability

    Collisionless magnetic reconnection requires the violation of ideal MHD by various kinetic-scale effects whose relative importance is uncertain. Recent research has highlighted the potential importance of wave-particle interactions by showing […]

    Read more of: Anomalous resistivity and the non-linear evolution of the ion-acoustic instability

12. Subglacial sediments as a control on the onset and location of two Siple Coast ice streams, West Antarctica

    Laterally continuous subglacial sediments are a necessary component for ice streaming in the modern onset regions of the ice streams draining the Siple Coast of West Antarctica on the basis […]

    Read more of: Subglacial sediments as a control on the onset and location of two Siple Coast ice streams, West Antarctica