Greenland deglaciation puzzles
About 23,000 years ago, the southern margins of the great Northern Hemisphere ice sheets across Europe and North America began to melt. The melt rate accelerated ∼20,000 years ago, and […]
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Read more of: Greenland deglaciation puzzles
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The ‘footloose’ mechanism: iceberg decay from hydrostatic stresses
Read more of: The ‘footloose’ mechanism: iceberg decay from hydrostatic stressesWe study a mechanism of iceberg breakup that may act together with the recognized melt and wave-induced decay processes. Our proposal is based on observations from a recent field experiment […]
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Phase-sensitive FMCW radar system for high-precision Antarctic ice shelf profile monitoring
Read more of: Phase-sensitive FMCW radar system for high-precision Antarctic ice shelf profile monitoringIce shelves fringe much of the Antarctic continent, and, despite being up to 2 km thick, are vulnerable to climate change. Owing to their role in helping to control the […]
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A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°-39°W to 64°-59°S): insights into the glacial development of the continental shelf
Read more of: A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°-39°W to 64°-59°S): insights into the glacial development of the continental shelfWe present a new, high resolution (300 m) bathymetric grid of the continental shelf surrounding the South Orkney Islands, northeast of the Antarctic Peninsula. The new grid, derived from a […]
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Prediction of relativistic electron flux at geostationary orbit following storms: Multiple regression analysis
Read more of: Prediction of relativistic electron flux at geostationary orbit following storms: Multiple regression analysisMany solar wind and magnetosphere parameters correlate with relativistic electron flux following storms. These include relativistic electron flux before the storm, seed electron flux, solar wind velocity and number density […]
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Mopsechiniscus franciscae, a new species of a rare genus of Tardigrada from continental Antarctica
Read more of: Mopsechiniscus franciscae, a new species of a rare genus of Tardigrada from continental AntarcticaDespite the importance and regular occurrence of tardigrades in the Antarctic terrestrial ecosystem, taxonomic studies of, in particular, continental Antarctica species have advanced very slowly. During a large survey to […]
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Simulating the Earth’s radiation belts: internal acceleration and continuous losses to the magnetopause
Read more of: Simulating the Earth’s radiation belts: internal acceleration and continuous losses to the magnetopauseIn the Earth’s radiation belts the flux of relativistic electrons is highly variable, sometimes changing by orders of magnitude within a few hours. Since energetic electrons can damage satellites it […]
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Three-dimensional stochastic modeling of radiation belts in adiabatic invariant coordinates
Read more of: Three-dimensional stochastic modeling of radiation belts in adiabatic invariant coordinatesA 3-D model for solving the radiation belt diffusion equation in adiabatic invariant coordinates has been developed and tested. The model, named REM (for Radbelt Electron Model), obtains a probabilistic […]
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Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica
Read more of: Hydrography and circulation in the Filchner Depression, Weddell Sea, AntarcticaCold and dense Ice Shelf Water (ISW) emerging from the Filchner-Ronne Ice Shelf cavity in the southwestern Weddell Sea flows northward through the Filchner Depression to eventually descend the continental […]
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Surface energy budget on Larsen and Wilkins ice shelves in the Antarctic Peninsula: results based on reanalyses in 1989-2010
Read more of: Surface energy budget on Larsen and Wilkins ice shelves in the Antarctic Peninsula: results based on reanalyses in 1989-2010Ice shelves in the Antarctic Peninsula have significantly disintegrated during recent decades. To better understand the atmospheric contribution in the process, we have analysed the inter-annual variations in radiative and […]
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Stable isotopes and Antarctic moss banks: plants and soil microbes respond to recent warming on the Antarctic Peninsula [abstract only]
Read more of: Stable isotopes and Antarctic moss banks: plants and soil microbes respond to recent warming on the Antarctic Peninsula [abstract only]The Antarctic Peninsula is one of the most rapidly warming regions on Earth, with air temperature increases of as much as 3°C recorded since the 1950s. However, the longer-term context […]