glacial

Thwaites Glacier, western Antarctica, 2019. Credit: Robert Larter Among the vast expanse of Antarctica lies the Thwaites Glacier, the world's widest glacier measuring about 80 miles on the western edge of the continent. Despite its size, the massive landform is losing about 50 billion tons of ice more than it is receiving in snowfall, which places it in a precarious position in respect to its stability.…

Satellite image of a portion of the scablands captured on May 14, 2023, by the Operational Land Imager) on Landsat 8.Outbursts from Glacial Lake Missoula carved the Channeled Scablands in Washington state.In southeastern Washington state, neat grids of farmland stretch for miles across gently rolling hills. Dozens of different crops are grown on the valuable agricultural land of the Columbia Plateau. In some places, however, undulating streaks of scoured earth interrupt the array of angular plots and center-pivot…

Approximately 190,000 people live in areas that are at a risk of being flooded due to outbursts from the glacial lakes in the Third Pole region of the Earth. In the above map, the yellow sections in pie charts indicate the percentage of glacial lakes posing very high and high risks. The box plots illustrate the distance between glacial lakes and the nearest downstream human settlements exposed to glacial lake outburst floods (GLOFs) and the basic early…

Garena Free Fire MAX Redeem Codes for December 8: If you have been struggling to climb up the ladder, then you need to know these important tips. There are ways to rise in rankings even without getting Booyah. All you have to do is to ensure you're consistently in the last ten players on the map. And doing that is simple. To make sure that you survive the opening round, never drop in near a major location. Always pick a less populated spot with 4-5 houses and move from there. You can easily find some weapons and also…

"Glaciology 101" attendees received this handout depicting the Laurentide Ice Sheet and where it has left its mark on New York City. Credit: Katarina Jerinic On a cold night in November, a small group gathered at the boathouse of the Brooklyn-based Gowanus Dredgers to listen to Elizabeth Case, a glaciologist and Ph.D. student at Columbia Climate School's Lamont-Doherty Earth Observatory, talk about how glaciers formed and…

Reconstruction of Δ14C. Atmospheric 14C reconstruction based on Revine 14C tree-ring sequences located at their most likely (marginal posterior mode) calendar ages compared to IntCal20 estimate (green shape). The Revine observations are plotted with 1σ error bars, while the IntCal and Revine curves show 95% (or 2σ) probability intervals. Credit: Communications Earth & Environment (2023). DOI: 10.1038/s43247-023-00929-9 The…

The glacial rock flour can be found in Iluilak in Nuuk Fjord. Here the deposit is raised, so you easily can see the grey glacial rock flour. Credit: Minik Rosing The first experiments with glacial rock flour from Greenland show that it can capture significant amounts of CO2 and provide a wider array of nutrients than commercial organic fertilizers, resulting in improved crop growth. In the long term, the glacial rock flour can…

An image of the Southern Patagonia Ice Field on February 13, 2014, taken from the International Space Station. Credit: Expedition 38 crew member/ NASA A team of researchers began their journey around frigid Patagonia, moving through water channels to reach the fjords, surrounded by ice and snow. They withstood freezing temperatures throughout their journey, all in the hope of extracting the perfect sediment core: the key to…

Map of subglacial topography of central East Antarctica showing context of study samples. Sample sites on the inland flank of the TAM shown by white stars. Topography is in meters above sea level, after Bedmap2. Shown are interior subglacial mountains and basins, drainage divides (dashed blue lines) and ice-flow directions within the overlying East Antarctic Ice Sheet. Blue line outlining heavy dots shows source area of glacial moraine cobbles inferred…

Trends of ice-dammed GLOF discharges between 1900 and 2021. Posterior trends from Bayesian quantile regression of reported V0 (orange) and Qp (blue) with time. Dark and light colors are trends for the median and 90th percentile (that is, 10% largest), respectively, for 1900–2021; gray densities are trends for 1990–2021. Black lines are 95% HDIs and circles are medians of the posterior distributions. Trends refer to log10-transformed values of V0 and Qp,…