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- Movie:Glacier Calving + (A calving glacier (also called tidewater g … A calving glacier (also called tidewater glacier) is a glacier that ends in a body of water. Calving glaciers occur in Alaska, Arctic Canada, Patagonia, as well as along the Greenlandic Ice Sheet and Antarctica.</br>It is these systems that produce icebergs floating in the world oceans.</br></br>Calving glaciers behave very differently than land-based glaciers. Their velocity accelerates at the terminus, and they are much more dynamic than land-based glaciers. Calving glaciers need a large accumulation area to compensate for the ice mass lost by calving.</br>Calving rates of tidewater glaciers in Alaska were found to be controlled by the depth of the water at the glacier front (Brown et al., 1982).</br></br>Vc=CHw+D</br></br>Vc = calving speed (m/yr)</br>C = calving coefficient (27.1 +/- 2 per yr for a study of 13 Alaskan glaciers)</br>Hw = water depth at the glacier front (m)</br>D = constant (0 m/yr for a study of 13 Alaskan glaciers)</br></br>Calving glaciers can advance and retreat at great rates. Some of the Alaskan calving glaciers retreated over > 100 km in the last two centuries.d over > 100 km in the last two centuries.)
