Compilation of a new bathymetric dataset of South Georgia
We introduce a new bathymetric compilation of the area around South Georgia in the Southern Ocean. Using a variety of data sources including multi and single-beam swath bathymetry we have […]
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Read more of: Compilation of a new bathymetric dataset of South Georgia
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Source regions for Antarctic MLT non-migrating semidiurnal tides
Read more of: Source regions for Antarctic MLT non-migrating semidiurnal tidesSource regions for the westward propagating zonal wavenumber one and three components of the semidiurnal tide observed in the summer mesosphere and lower thermosphere over Antarctica are identified by correlating […]
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Quasi-biennial oscillation influence on long-period planetary waves in the Antarctic upper mesosphere
Read more of: Quasi-biennial oscillation influence on long-period planetary waves in the Antarctic upper mesosphereLong-period planetary wave data derived from meteor wind observations recorded over a 12-year period with the SuperDARN radar at Halley, Antarctica, are presented and compared with the phase of the […]
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Climatology of short-period mesospheric gravity waves over Halley, Antarctica (76 S, 27 W)
Read more of: Climatology of short-period mesospheric gravity waves over Halley, Antarctica (76 S, 27 W)We present a first detailed climatological study of individual quasi-monochromatic mesospheric, shortperiod gravity-wave events observed over Antarctica. The measurements were made using an all-sky airglow imager located at Halley Station […]
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Kinetic equation of linear fractional stable motion and applications to modeling the scaling of intermittent bursts
Read more of: Kinetic equation of linear fractional stable motion and applications to modeling the scaling of intermittent burstsLévy flights and fractional Brownian motion have become exemplars of the heavy-tailed jumps and longranged memory widely seen in physics. Natural time series frequently combine both effects, and linear fractional […]
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Freshwater transport at Fimbulisen, Antarctica
Read more of: Freshwater transport at Fimbulisen, AntarcticaThe intricate near-circumpolar system of fronts and currents surrounding Antarctica isolates much of Earth’s freshwater from the saline oceans immediately north. The Antarctic Slope Front sustains bathymetrically steered flow at […]
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Spatial distribution of average vorticity in the high-latitude ionosphere and its variation with interplanetary magnetic field direction and season
Read more of: Spatial distribution of average vorticity in the high-latitude ionosphere and its variation with interplanetary magnetic field direction and seasonWe present a technique to measure the magnetic field-aligned vorticity of meso-scale plasma flows in the F-region ionosphere using line-of-sight velocity measurements made by the Super Dual Auroral Radar Network […]
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Mixing on the continental slope of the southern Weddell Sea
Read more of: Mixing on the continental slope of the southern Weddell SeaShipboard hydrography and current profiles collected in 2003 and time series from moored current meters deployed in late 1990s are analyzed to study the variability of mixing in the southeastern […]
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The sources and fate of freshwater exported in the East Greenland Current
Read more of: The sources and fate of freshwater exported in the East Greenland CurrentMonitoring the sources and fate of freshwater in the East Greenland Current (EGC) is important, as this water has the potential to suppress deep convection in the Nordic and Labrador […]
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Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment
Read more of: Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environmentThe polar foraminifera Neogloboquadrina pachyderma (sinistral) dominates assemblages from the high latitude Southern Ocean, which plays a key role in determining past climate due to the tight linkage between Antarctic […]
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Three-dimensional diffusion simulation of outer radiation belt electrons during the 9 October 1990 magnetic storm
Read more of: Three-dimensional diffusion simulation of outer radiation belt electrons during the 9 October 1990 magnetic stormRelativistic (>1 MeV) electron flux increases in the Earth’s radiation belts are significantly underestimated by models that only include transport and loss processes, suggesting that some additional acceleration process is […]
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Plasmaspheric hiss overview and relation to chorus
Read more of: Plasmaspheric hiss overview and relation to chorusA brief overview is given of the history of plasmaspheric hiss research, particularly in the context of the recent work by Bortnik et al. (2008) indicating that chorus could be […]