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Pine Island Glacier's ice shelf is ripping apart, speeding up key Antarctic glacier

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. ....

United Kingdom , Ian Joughin , Daniel Shapero , Pierre Dutrieux , Notre Dame , Ben Smith , Mark Barham At British Antarctic , Uw Applied Physics Laboratory , British Antarctic , Uk Natural Environment Research Council , University Of Washington , European Union , European Space Agency , Us National Science Foundation , Pine Island Glacier , British Antarctic Survey , Pine Island , Island Glacier , Thwaites Glacier , West Antarctic Ice Sheet , West Antarctic , Mark Barham , Science Foundation , Environment Research , Atmospheric Science , Climate Science ,

The rocky road to accurate sea-level predictions

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. ....

United States , Petermann Fjord , Qaasuitsup Kommunia , Petermann Glacier , Greenland General , Stockholm University , Earth Science , Geology Soil , Geophysics Gravity , Climate Change , ஒன்றுபட்டது மாநிலங்களில் , பீட்டர்மேன் ஃபியோர்ட் , பீட்டர்மேன் பனிப்பாறை , கிரீன்லாந்து ஜநரல் , ஸ்டாக்‌ஹோல்ம் பல்கலைக்கழகம் , பூமி அறிவியல் ,

Study shows how permafrost releases methane in the warming Arctic

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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, which are extremely important if you want to build something on permafrost, such as an oil and gas field. Permafrost is also very gassy: it may contain a lot of natural gas in the form of hydrates, and its permeability is an important parameter both for research and for many activities in the Arctic. ....

Yevgeny Chuvilin , Massachusetts Institute Of Technology , Research Scientist At Skoltech , Energy Fuels , Leading Research Scientist , Massachusetts Institute , Earth Science , Energy Sources , Geophysics Gravity , Temperature Dependent Phenomena , Algorithms Models , Theory Design , Climate Change , மாசசூசெட்ஸ் நிறுவனம் ஆஃப் தொழில்நுட்பம் , ஆற்றல் எரிபொருள்கள் , முன்னணி ஆராய்ச்சி விஞ்ஞானி , மாசசூசெட்ஸ் நிறுவனம் , பூமி அறிவியல் ,

Coalition of scientists determine cause, scope of February 2021 Uttarakhand disaster

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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 hundred people dead or missing.
A self-organized coalition of fifty-three scientists came together in the days following the disaster to investigate the cause, scope, and impact of the flood and landslide. Their study, which analysed satellite imagery, seismic records, and eyewitness videos to produce computer models of the flow, was published online today in the journal ....

Dhauliganga River , India General , Dan Shugar , Interdisciplinary Research In Earth Science , High Mountain Asia Team , Department Of Geoscience , Engineering Research Council , Government Of India European Space Agency , European Space Agency Glaciers , Department Of Science , University Of Calgary , Swiss Agency For Development , Swiss National Science Foundation , Ronti Gad , India European Space Agency , Future Investigators , Space Science , Natural Science , Mountain Asia Team , Earth Science , Roshydromet Rd Plan , Swiss Agency , Swiss Federal Excellence Postdoc Award , Climate Science , Temperature Dependent Phenomena , Earth Science ,

Machine learning model doubles accuracy of global landslide 'nowcasts'

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. ....

Goddard Space Flight Center , United States , Thomas Stanley , Propulsion Laboratory , Earth Science News Team , Universities Space Research Association , Earth Applied Sciences Disasters , Landslide Hazard Assessment , Space Flight Center , Soil Moisture Active Passive , Central America , Applied Sciences Disasters , Esprit Smith , Science News Team , Earth Science , Geology Soil , Geophysics Gravity , Plate Tectonics , Technology Engineering Computer Science , கோடார்ட் இடம் விமானம் மையம் , ஒன்றுபட்டது மாநிலங்களில் , தாமஸ் ஸ்டான்லி , ப்ரொபல்ஶந் ஆய்வகம் , பூமி அறிவியல் செய்தி அணி , பல்கலைக்கழகங்கள் இடம் ஆராய்ச்சி சங்கம் , நிலச்சரிவு ஆபத்து மதிப்பீடு ,