| Variegated Glacier | |
|---|---|
 Glaciers of Russell Fjord | |
  Variegated Glacier | |
| Location | Yakutat City and Borough, Alaska, U.S. |
| Coordinates | 60°0′N139°8′W / 60.000°N 139.133°W [1] |
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Variegated Glacier is one of several glaciers which connect to Russell Fjord in Alaska. Variegated Glacier has been of considerable scientific interest because it surges every 20 years. [2] [3]
Denali National Park and Preserve, formerly known as Mount McKinley National Park, is a national park and preserve located in Interior Alaska, United States, centered on Denali, the highest mountain in North America. The park and contiguous preserve encompass 6,045,153 acres which is larger than the state of New Hampshire. On December 2, 1980, 2,146,580-acre Denali Wilderness was established within the park. Denali's landscape is a mix of forest at the lowest elevations, including deciduous taiga, with tundra at middle elevations, and glaciers, snow, and bare rock at the highest elevations. The longest glacier is the Kahiltna Glacier. Wintertime activities include dog sledding, cross-country skiing, and snowmobiling. The park received 594,660 recreational visitors in 2018.
Hubbard Glacier is a glacier located in Wrangell–St. Elias National Park and Preserve in eastern Alaska and Kluane National Park and Reserve in Yukon, Canada, and named after Gardiner Hubbard.
Glacier Bay National Park and Preserve is an American national park located in Southeast Alaska west of Juneau. President Calvin Coolidge proclaimed the area around Glacier Bay a national monument under the Antiquities Act on February 26, 1925. Subsequent to an expansion of the monument by President Jimmy Carter in 1978, the Alaska National Interest Lands Conservation Act (ANILCA) enlarged the national monument by 523,000 acres on December 2, 1980, and created Glacier Bay National Park and Preserve. The national preserve encompasses 58,406 acres of public land to the immediate northwest of the park, protecting a portion of the Alsek River with its fish and wildlife habitats, while allowing sport hunting.
Kennicott Glacier is a glacier in the U.S. state of Alaska. It trends southeast 43 km (27 mi) from Mount Blackburn to its terminus at the head of the Kennicott River in the Wrangell Mountains. It is located in Wrangell-St. Elias National Park near the small town of McCarthy, Alaska and the historic ghost town of Kennecott, Alaska.
Nabesna Glacier is a glacier in the U.S. state of Alaska. Fed by deep snowfall in the Wrangell Mountains, the 53 mile (85 km) long Nabesna is the longest valley glacier in North America and the world's longest interior valley glacier.
Iliamna Volcano, or Mount Iliamna, is a glacier-covered stratovolcano in the largely volcanic Aleutian Range in southwest Alaska. Located in the Chigmit Mountain subrange in Lake Clark National Park and Preserve, the 10,016-foot (3,053 m) volcano lies approximately 134 miles (215 km) southwest of Anchorage on the west side of lower Cook Inlet. It is the 25th most prominent peak in the United States.
Matanuska Glacier is a valley glacier in the US state of Alaska. At 27 miles (43 km) long by 4 miles (6.4 km) wide, it is the largest glacier accessible by car in the United States. Its terminus feeds the Matanuska River. It lies near the Glenn Highway about 100 miles (160 km) northeast of Anchorage in Glacier View. The glacier flows about 1 foot (30 cm) per day. Due to ablation of the lower glacier, as of 2007, the location of the glacier terminus has changed little over the previous three decades.
Ruth Glacier is a glacier in Denali National Park and Preserve in the U.S. state of Alaska. Its upper reaches are approximately 3 vertical miles below the summit of Denali. The glacier's "Great Gorge" is one mile wide, and drops almost 2,000 feet over 10 miles, with crevasses along the surface. Above the surface on both sides are 4,900-foot granite cliffs. From the top of the cliffs to the bottom of the glacier is a height exceeding that of the Grand Canyon. Ruth Glacier moves at a rate of three feet per day and was measured to be 4,000 feet thick in 1983.
Bering Glacier is a glacier in the U.S. state of Alaska. It currently terminates in Vitus Lake south of Alaska's Wrangell-St. Elias National Park, about 10 km (6.2 mi) from the Gulf of Alaska. Combined with the Bagley Icefield, where the snow that feeds the glacier accumulates, the Bering is the largest glacier in North America. The glacier is named after Vitus Bering.
Glacial surges are short-lived events where a glacier can advance substantially, moving at velocities up to 100 times faster than normal. Surging glaciers cluster around a few areas. High concentrations of surging glaciers occur in the Karakoram, Pamir Mountains, Svalbard, the Canadian Arctic islands, Alaska and Iceland, although overall it is estimated that only one percent of all the world's glaciers ever surge. In some glaciers, surges can occur in fairly regular cycles, with 15 to 100 or more surge events per year. In other glaciers, surging remains unpredictable. In some glaciers, however, the period of stagnation and build-up between two surges typically lasts 10 to 200 years and is called the quiescent phase. During this period the velocities of the glacier are significantly lower, and the glaciers can retreat substantially.
Endicott River Wilderness is a 98,729-acre (39,954 ha) wilderness area in the U.S. state of Alaska. Designated by the United States Congress in 1980 in a provision of the Alaska National Interest Lands Conservation Act, it is located within the Tongass National Forest and is bordered by Glacier Bay Wilderness within Glacier Bay National Park on the west.
The Alsek Ranges are the southeasternmost subdivision of the Saint Elias Mountains of the Pacific Cordillera. They span the region between the Alsek River, Glacier Bay and the Kelsall River. Their western boundary is the Grand Pacific Glacier, beyond which is the Fairweather Range, another subdivision of the St. Elias Mountains. To their east is the northernmost section of the Boundary Ranges, the northernmost subdivision of the Coast Mountains and which are also known as the Alaska Boundary Range, and which run south to the Nass River and form, as their name indicates, the spine of the boundary between the American state of Alaska and the Canadian province of British Columbia.
Kluane / Wrangell–St. Elias / Glacier Bay / Tatshenshini-Alsek is an international park system located in Canada and the United States, at the border of Yukon, Alaska and British Columbia.
The Echelmeyer Ice Stream, formerly known as Ice Stream F, is a glaciological feature of the West Antarctic Ice Sheet. It is an ice stream flowing west to the Shirase Coast to the north of the MacAyeal Ice Stream, and is one of several major ice streams draining from Marie Byrd Land into the Ross Ice Shelf. The ice streams were investigated and mapped by U.S. Antarctic Research Program personnel in a number of field seasons from 1983–84 and originally named Ice Stream A, B, C, etc., according to their position from south to north.
The Worthington Glacier is a 5,774-acre (2,337 ha) valley glacier located adjacent to Thompson Pass in the southeastern mainland section of the U.S. state of Alaska.
The Bagley Icefield in southeastern Alaska is the second largest nonpolar icefield in North America. It was named after James W. Bagley, a USGS topographic engineer who developed the Bagley T-3 camera and mapped Alaska prior to World War I. At 200 km (127 mi) long, 10 km (6 mi) wide, and up to 1 km (3,000 ft) thick, it covers most of the core of the Saint Elias Mountains and part of the Chugach Mountains. It nourishes dozens of valley glaciers that drain down both sides of the range, including the Tana, Miles, and Guyot glaciers. The area of the combined Bagley Icefield and Bering Glacier System, including tributaries, is 5,200 km² (1,900 sq mi).
Muldrow Glacier, also known as McKinley Glacier, is a large glacier in Denali National Park and Preserve in the U.S. state of Alaska. Native names for the glacier include, Henteel No' Loo' and Henteel No' Loot.
Wendy Julia Lawson is a New Zealand glaciology academic. She is currently a full professor at the University of Canterbury.
Shoup Bay is an inlet of Port Valdez inside the Valdez Arm of Prince William Sound in Alaska. steep-walled, flat-bottomed basin with a depth of approximately 200 ft. described as a hanging valley that formed during more extensive Pleistocene glaciation. Located eight miles west of Valdez, Alaska, United States, it is fed by Shoup Glacier, as well as McCallister Creek, Palmer Creek, and Uno Creek. The bay itself opens into the Valdez Narrows and is included as part of the Shoup Bay State Marine Park.
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