Gondwana breakup and plate kinematics: Business as usual
A tectonic model of the Weddell Sea is built by composing a simple circuit with optimized rotations describing the growth of the South Atlantic and SW Indian oceans. The model […]
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Read more of: Gondwana breakup and plate kinematics: Business as usual
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West Antarctic Rift System in the Antarctic Peninsula
Read more of: West Antarctic Rift System in the Antarctic PeninsulaDecades after the recognition of the West Antarctic Rift System, and in spite of its global importance, the location and nature of the plate boundary it formed at are unknown […]
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Animated tectonic reconstruction of the Southern Pacific and alkaline volcanism at its convergent margins since Eocene times
Read more of: Animated tectonic reconstruction of the Southern Pacific and alkaline volcanism at its convergent margins since Eocene timesAn animated reconstruction shows South Pacific plate kinematics, in the reference frame of West Antarctica, between 55 Ma and the present-day. The ocean floor in the region formed due to […]
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Full Stokes modeling of marine ice sheets: influence of the grid size
Read more of: Full Stokes modeling of marine ice sheets: influence of the grid sizeUsing the finite-element code Elmer, we show that the full Stokes modeling of the ice-sheet/ice-shelf transition we propose can give consistent predictions of grounding-line migration. Like other marine ice-sheet models […]
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Local mixing events in the upper-troposphere and lower-stratosphere. Part I: detection with the Lyapunov diffusivity
Read more of: Local mixing events in the upper-troposphere and lower-stratosphere. Part I: detection with the Lyapunov diffusivityA new diagnostic (the “Lyapunov diffusivity”) is presented that has the ability to quantify isentropic mixing in diffusion units and detects local mixing events by describing latitude-longitude variability. It is […]
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Surface-ocean CO2 variability and vulnerability
Read more of: Surface-ocean CO2 variability and vulnerabilityImproved sampling technologies, international observing networks, and data synthesis efforts are providing an unprecedented view of the global patterns and decadal variability of surface-ocean partial pressure of carbon dioxide (pCO(2)) […]
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Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugia
Read more of: Hidden levels of phylodiversity in Antarctic green algae: further evidence for the existence of glacial refugiaRecent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial-interglacial cycles, which contradicts the existing paradigm that terrestrial life was wiped out by […]
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Introduction to Special Issue on high speed solar wind streams and geospace interactions (HSS-GI)
Read more of: Introduction to Special Issue on high speed solar wind streams and geospace interactions (HSS-GI)This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth […]
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Discovering genes associated with dormancy in the monogonont rotifer Brachionus plicatilis
Read more of: Discovering genes associated with dormancy in the monogonont rotifer Brachionus plicatilisBackground: Microscopic monogonont rotifers, including the euryhaline species Brachionus plicatilis, are typically found in water bodies where environmental factors restrict population growth to short periods lasting days or months. The […]
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Polar science: bid for freely accessible biodiversity archive
Read more of: Polar science: bid for freely accessible biodiversity archiveThe Southern Ocean is of unique ecological, biogeographic and political interest, as noted by your Editorial ‘The way ahead for polar science’ (Nature 457, 1057; 2009). Given the rate and […]
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Diel vertical migration of Antarctic krill (Euphausia superba) is flexible during advection across the Scotia Sea
Read more of: Diel vertical migration of Antarctic krill (Euphausia superba) is flexible during advection across the Scotia SeaWe model a summer snapshot of the behavior of Antarctic krill (Euphausia superba) during advection across the Scotia Sea. Individual krill respond to a changing landscape of predation risk and […]
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Variability and trends in stratospheric NO2 in Antarctic summer, and implications for stratospheric NOy
Read more of: Variability and trends in stratospheric NO2 in Antarctic summer, and implications for stratospheric NOyNO2 measurements during 1990-2007, obtained from a zenith-sky spectrometer in the Antarctic, are analysed to determine the long-term changes in NO2. An atmospheric photochemical box model and a radiative transfer […]