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An ice shove (also known as fast ice, an ice surge, ice push, ice heave, shoreline ice pileup, ice piling, ice thrust, ice tsunami, [1] ice ride-up, or ivu in Iñupiat) is a surge of ice from an ocean or large lake onto the shore. [2] Ice shoves are caused by ocean currents, strong winds, or temperature differences pushing ice onto the shore ...
Ice dam forming on slate roof. An ice dam is an ice build-up on the eaves of sloped roofs of heated buildings that results from melting snow under a snow pack reaching the eave and freezing there. Freezing at the eave impedes the drainage of meltwater, which adds to the ice dam and causes backup of the meltwater, which may cause water leakage ...
Internal deformation occurs when the weight of the ice causes the deformation of ice crystals. This takes place most readily near the glacier bed, where pressures are highest. There are glaciers that primarily move via sliding, glacial quakes, and others that move almost entirely through deformation.
Fast ice (also called land-fast ice, landfast ice, and shore-fast ice) is sea ice or lake ice [1] that is "fastened" to the coastline, to the sea floor along shoals, or to grounded icebergs. [ 2 ] [ 3 ] [ 4 ] Fast ice may either grow in place from the sea water or by freezing pieces of drifting ice to the shore or other anchor sites.
The dominant cause of soil displacement in frost heaving is the development of ice lenses. During frost heave, one or more soil-free ice lenses grow, and their growth displaces the soil above them. These lenses grow by the continual addition of water from a groundwater source that is lower in the soil and below the freezing line in the soil.
That is, locations farther north rise faster, an effect that becomes apparent in lakes. The bottoms of the lakes gradually tilt away from the direction of the former ice maximum, such that lake shores on the side of the maximum (typically north) recede and the opposite (southern) shores sink. [17] This causes the formation of new rapids and rivers.
A long-quiet yet massive super volcano, dubbed the "Long Valley Caldera," has the potential to unleash a fiery hell across the planet, and the magma-filled mountain has a history of doing so.
Ice jacking is a continuous process that occurs during the winter in areas near lakes. The process starts when the ice begins to crack. When water then fills in those gaps, the process repeats and continues until there is a wall of ice surrounding the lake's shoreline, sometimes reaching up to three feet.