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Glacial motion can be fast (up to 30 metres per day (98 ft/d), observed on Jakobshavn Isbræ in Greenland) [1] or slow (0.5 metres per year (20 in/year) on small glaciers or in the center of ice sheets), but is typically around 25 centimetres per day (9.8 in/d).
The glacier encounters more bumps due to its higher speed and, since ice moving at a higher speed is less able to maintain connection with the bedrock, faster moving glaciers are more likely to form cavities when passing over bumps. [2] [1] This increases the subglacial space which can be filled with water, decreasing basal water pressure. [7]
The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.
The Palisades Fire is 6% contained after scorching nearly 20,000 acres, and firefighters have made progress tackling two others, the Hurst Fire (37% contained) and the Lidia Fire (75%) contained.
Timelapse satellite video taken from space shows the rapid expansion of the California wildfires, offering a harrowing look at how quickly the blazes exploded over the last two days amid powerful ...
LOS ANGELES — A fast-moving wildfire fueled by dangerously high-speed Santa Ana winds threatened homes in some of California's most exclusive neighborhoods on Tuesday, destroying homes and ...
The only glaciers to survive to the 21st century were the Salmon Glacier and the Grizzly Glacier, a 15-acre (61,000 m 2) icefield on the north side of Thompson Peak, which showed crevasses indicating true motion even on so small an icefield. [4] The Salmon Glacier went extinct in 2015. The Grizzly Glacier was declared extinct in the fall of ...
Billy See, incident commander for Cal Fire, said the fire is advancing at 4,000 to 5,000 acres per hour but with winds forecast to die down overnight and higher humidity moving into the area, See ...