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Pine Island Glacier's ice shelf lost about one-fifth of its total area between 2017 and 2020, in three dramatic collapses. Meanwhile the glacier sped up by 12%. The rest of the ice shelf, the authors say, could disappear much sooner than previous studies had suggested.
The type of material present under glaciers has a big impact on how fast they slide towards the ocean. Scientists face a challenging task to acquire data of this under-ice landscape. Choosing the wrong equations for the under-ice landscape can have the same effect on the predicted contribution to sea-level rise as a warming of several degrees, says Henning Åkesson, who led a new published study on Petermann Glacier in Greenland.
E-Mail Researchers from Skoltech have designed and conducted experiments measuring gas permeability under various conditions for ice-containing sediments mimicking permafrost. Their results can be useful both in modeling and testing techniques for gas production from Arctic reservoirs and in tracing methane emission in high latitudes. The paper was published in the journal Energy&Fuels. Permafrost, even though it sounds very stable and permanent, is actually quite diverse: depending on the composition of the frozen ground, pressure, temperature and so on, it can have varying properties, wh...
E-Mail Credit: Irfan Rashid, Department of Geoinformatics, University of Kashmir On February 7 of this year, the Chamoli district in the Uttarakhand region of India experienced a humanitarian tragedy when a veritable wall of rock and ice collapsed and formed a debris flow that barreled down the Ronti Gad, Rishiganga, and Dhauliganga river valleys. The massive slide, caused when a wedge of rock carrying a steep hanging glacier broke off a ridge in the Himalayan mountain range, and the resulting debris flow, led to the destruction of two hydropower generating facilities and left over two hund...
What if we could identify at-risk areas anywhere in the world at any time? Enter NASA's Global Landslide Hazard Assessment (LHASA) model and mapping tool.