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Hubbard Glacier,SE Alaska, largest tidewater glacier in North America, on Disenchantment Bay at head of Yakutat Bay, at the northern end of the Alaskan panhandle. Extending 76 mi (122 km) from Mt. Logan in Yukon, the glacier's face is more than 6 mi (9.6 km) across and some 300 ft (90 m) high. It has twice blocked (1986, 2002) the mouth of Russell Fjord, making it a lake as high as 90 ft (27 m) above sea level.
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Hubbard Glacier[′həb·ərd ′glā·shər]
A valley glacier which reaches tidewater from a source area of Mount St. Elias of Alaska and the Yukon.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.