单词	pingo
释义	pingo noun pin·​go ˈpiŋ-(ˌ)gō  plural pingos : a low hill or mound forced up by hydrostatic pressure in an area underlain by permafrost Example Sentences Recent Examples on the Web As the ice grows and expands, and gaseous pressure continues to build, the frozen capsule may bulge at the surface, creating a small hill known as a pingo. Maya Wei-haas, National Geographic, 23 Sep. 2020 Since ice takes up more space than water, the growth of ice squeezes the unfrozen slurry, concentrating and pressurizing the gas and water, eventually bulging at the surface in a wart-like hill, called a pingo. Maya Wei-haas, National Geographic, 23 Sep. 2020 The pingo-like structures and the water that pushes up through fractures in the crater revealed that Ceres actually experienced cryovolcanic activity, or ice volcanoes, beginning around 9 million years ago. Ashley Strickland, CNN, 11 Aug. 2020 Pingo Canadian Landmark features eight of the 1,350 pingos found in the region, including the 160-foot-high Ibyuk Pingo, the second-tallest in the world. Karen Gardiner, Condé Nast Traveler, 13 June 2019 Yoshikawa admires Leffingwell's interpretations of frozen ground features like pingos, enhanced by his year-round residency at a spot where the sun doesn't shine for months. Alaska Dispatch News, 28 Oct. 2017 Sometimes called hydrolaccoliths, pingos typically form in arctic regions, like Siberia and northern Canada. Lacy Schley, Discover Magazine, 7 Aug. 2017 If a pingo collapsed tomorrow, though, there's no guarantee humanity would notice. Stephanie Pappas Live Science Contributor, Fox News, 5 June 2017 See More Word History Etymology Inuit pinguq First Known Use 1938, in the meaning defined above
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