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Showing 1–5 of 5 results
Advanced filters: Author: B. Kulessa Clear advanced filters

  • Signs of instability in the Antarctic Larsen C ice shelf have raised concerns that it might soon collapse like its northern neighbour Larsen B. Kulessa et al.combine an ice-shelf model with satellite and geophysical data to show that despite dynamic similarities, Larsen C is presently stabilized by marine ice.

    • Bernd Kulessa
    • Daniela Jansen
    • Peter R. Sammonds
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-7

  • Borehole optical televiewer logs from across Larsen C Ice Shelf, Antarctic Peninsula, reveal an ice unit formed during transport over the grounding zone, the upper depth of which coincides with a loss in lateral consistency of radar layering.

    • K. E. Miles
    • B. Hubbard
    • G. Jones
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • Suture zones are abundant on Antarctic ice shelves and widely observed to impede fracture propagation. Here we show that fracture detainment is principally controlled by the zones’ enhanced seawater contents, reducing fracture-driving stresses by orders of magnitude and therefore greatly enhancing stability.

    • Bernd Kulessa
    • Adam D. Booth
    • Bryn Hubbard
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-12

  • Anomalously slow seismic velocities in the upper Greenlandic crust reveal soft sedimentary substrates beneath major outlet glaciers. This, together with elevated geothermal heat flux observed at the onset of fast ice flow, has major implications for ice-sheet dynamics.

    • G. A. Jones
    • A. M. G. Ferreira
    • A. Morelli
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-12