Kenichi Matsuoka

Radiostratigraphy and surface accumulation history of the Amundsen-Weddell Ice Divide, West Antarctica

Stewart S. R. Jamieson, Felipe Napoleoni, Michael J. Bentley, Neil Watson Ross et autres

Recent ground-based radio-echo sounding (RES) surveys across the Ellsworth Subglacial Highlands (ESH), a topographically complex region near the Amundsen–Weddell ice divide, reveal new insights into Holocene accumulation and ice dynamics in West Antarctica. We traced seven internal reflection horizons (IRHs) across approximately …

Improved subglacial boundary conditions near Dome C, Antarctica, through rigorous integration of multi-campaign radar data and an ensemble stochastic simulation approach

Calvin S. Shackleton, Kenichi Matsuoka, Brett Fraysher, Joohan Lee et autres

Abstract. Subglacial bed topography is a fundamental boundary condition for ice-sheet flow, basal thermal regimes, and the preservation of palaeoclimate records, yet it remains highly uncertain across Antarctica. We use stochastic simulation methods to generate an ensemble of gridded (500 m) ice …

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Antarctica InSync Scientific Theme 7. Variability, extremes, and tipping in a changing Antarctic climate [White Paper]

Mathieu Casado, Irina Gorodetskaya, Louise Sime, Martin Werner et autres

Antarctica is changing faster than our current observation networks can robustly assess or predict. Recent extreme events – major ice-shelf collapse, unprecedented heatwaves and abrupt, record-low winter sea ice – show that rare extremes can rapidly reshape the Antarctic system. These changes …

Antarctica InSync Scientific Theme 3. Antarctic ice sheets and ice shelves: Processes driving rapid change, from observation to prediction [White Paper]

Gaël Durand, Anna Hogg, Hendrik Huwald, Elin Darelius et autres

Rapid and accelerating changes across the Antarctic Ice Sheet are driven by coupled ice–ocean–atmosphere–solid Earth processes. This impacts sea-level change, ocean circulation and climate feedbacks, all of which remain insufficiently understood. Despite major advances in observations and modelling, critical uncertainties persist regarding …