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August 5, 2024 - Alaska, USA: The Columbia Glacier in southern Alaska has long been an archetype of the world's most rapidly changing glaciers. Today, additional tidewater glaciers across the planet have garnered attention from scientists for their collective potential to contribute to sea level rise. In the meantime, the remainder of Columbia Glacier has continued its decades-long course of retreat and thinning. The ice of a tidewater glacier originates on land and flows downslope into seawater, where the glacier loses mass through the calving of icebergs. Columbia's ice descends from an icefield 3,050 meters (10,000 feet) above sea level, down the flanks of the Chugach Mountains, and into a fjord that leads into Prince William Sound. (Credit Image: © NASA Earth/ZUMA Wire)
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