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Brady Glacier
Brady Glacier is a long glacier located in Glacier Bay National Park and Preserve in the U.S. state of Alaska. It begins at and trends south to Taylor Bay, 46 miles (74 km) northwest of Hoonah. It was named by the U.S. Coast and Geodetic Survey for missionary and later governor Rev. Mr Brady O'Keefe. When George Vancouver first set eyes on the Brady Glacier in 1794, it was a calving tidewater glacier that dumped ice into the Taylor Bay. The following century, the glacier advanced eight kilometers. This advance was taken by Bengston (1962) as a sign of the glacier changing from a tidal to non-tidal one. Bengston also stated that the huge outwash plain at the glacier's terminus allows it to preserve itself even as most glaciers in the region retreated. The Brady Glacier has an ELA (the line above which snow remains even after summer's end) of only 800 meters, one of the lowest in Alaska. See also * List of glaciers A glacier ( ) or () is a persistent body of dense ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landsat
The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat 1 in 1975. The most recent, Landsat 9, was launched on 27 September 2021. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance and education, and can be viewed through the U.S. Geological Survey (USGS) "EarthExplorer" website. Landsat 7 data has eight spectral bands with spatial resolutions ranging from ; the temporal resolution is 16 days. Landsat images are usually divided into scenes for easy downloading. Each Landsat scene is about 115 miles long and 115 miles wide (or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier Bay National Park And Preserve
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. Chapter 8 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 on December 2, 1980, and created Glacier Bay National Park and Preserve. Title 2, section 202(1). The national preserve encompasses 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. Glacier Bay became part of a binational UNESCO World Heritage Site in 1979, and was inscribed as a Biosphere Reserve in 1986. The National Park Service undertook an obligation to work with Hoonah and Yakutat Tlingit Native American organizations in the management of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoonah, Alaska
Hoonah ( tli, Xunaa or ''Gaaw Yat’aḵ Aan'') is a largely Tlingit community on Chichagof Island, located in Alaska's panhandle in the southeast region of the state. It is west of Juneau, across the Alaskan Inside Passage. Hoonah is the only first-class city on Chichagof Island, the 109th-largest island in the world and the 5th-largest island in the U.S. At the 2020 census the population was 931, up from 760 in 2010. In the summer the population can swell to over 1,300 depending on fishing, boating, hiking and hunting conditions. "Hoonah" became the official spelling in 1901, with establishment of the Hoonah branch of the United States Post Office. "Hoonah" is the approximate pronunciation of the Tlingit name , which means “ lee of the north wind”, i.e., protected from the north wind. History The clans comprising the Huna Tlingit originally settled what is now Glacier Bay National Park as well as Icy Strait, Cross Sound, and the outer coast north to Sea Otter Creek. Tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Governors Of Alaska
The governor of Alaska (Iñupiaq language, Iñupiaq: ''Alaaskam kavanaa'') is the head of government of Alaska. The governor is the chief executive of the state and is the holder of the highest office in the executive branch of the government as well as being the commander in chief of the Alaska Department of Military and Veterans Affairs, Alaska's state forces. Twelve people have served as governor of the State of Alaska over 14 distinct terms, though Alaska had over 30 civilian and military governors during its long history as a United States territory. Only two governors, William A. Egan and Bill Walker (American politician), Bill Walker, were born in Alaska. Two people, Egan and Wally Hickel, have been elected to multiple non-consecutive terms as governor. Hickel is also noted for a rare Third party (United States), third party win in American politics, having been elected to a term in 1990 representing the Alaskan Independence Party. The longest-serving governor of the state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mr Brady O'Keefe
''Mister'', usually written in its contracted form ''Mr.'' or ''Mr'', is a commonly used English honorific for men without a higher honorific, or professional title, or any of various designations of office. The title 'Mr' derived from earlier forms of ''master'', as the equivalent female titles ''Mrs'', ''Miss'', and '' Ms'' all derived from earlier forms of ''mistress''. ''Master'' is sometimes still used as an honorific for boys and young men. The modern plural form is ''Misters'', although its usual formal abbreviation ''Messrs''(.) derives from use of the French title ' in the 18th century. ' is the plural of ' (originally ', "my lord"), formed by declining both of its constituent parts separately. Historical etiquette Historically, ''mister'' was applied only to those above one's own status if they had no higher title such as ''Sir'' or ''my lord'' in the English class system. That understanding is now obsolete, as it was gradually expanded as a mark of respect to thos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Vancouver
Captain George Vancouver (22 June 1757 – 10 May 1798) was a British Royal Navy officer best known for his 1791–1795 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of what are now the Canadian province of British Columbia as well as the US states of Alaska, Washington and Oregon. He also explored the Hawaiian Islands and the southwest coast of Australia. Vancouver Island, the city of Vancouver in British Columbia, Vancouver, Washington in the United States, Mount Vancouver on the Canadian–US border between Yukon and Alaska, and New Zealand's fourth-highest mountain, also Mount Vancouver, are all named after him. Early life George Vancouver was born in the seaport town of King's Lynn (Norfolk, England) on 22 June 1757 - the sixth and youngest child of John Jasper Vancouver, a Dutch-born deputy collector of customs, and Bridget Berners. He came from an old respected family. The surname Vancouver comes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow Line
The climatic snow line is the boundary between a snow-covered and snow-free surface. The actual snow line may adjust seasonally, and be either significantly higher in elevation, or lower. The permanent snow line is the level above which snow will lie all year. Background Snow line is an umbrella term for different interpretations of the boundary between snow-covered surface and snow-free surface. The definitions of the snow line may have different temporal and spatial focus. In many regions the changing snow line reflect seasonal dynamics. The final height of the snow line in a mountain environment at the end of the melting season is subject to climatic variability, and therefore may be different from year to year. The snow line is measured using automatic cameras, aerial photographs, or satellite images. Because the snow line can be established without on-the-ground measurements, it can be measured in remote and difficult to access areas. Therefore, the snow line has become an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Archipelago
The Alexander Archipelago (russian: Архипелаг Александра) is a long archipelago (group of islands) in North America lying off the southeastern coast of Alaska. It contains about 1,100 islands, the tops of submerged coastal mountains that rise steeply from the Pacific Ocean. Deep channels and fjords separate the islands and cut them off from the mainland. The islands shelter the northern part of the Inside Passage as it winds its way among them. The islands have irregular, steep coasts and dense evergreen and temperate rain forests; most are accessible only by boat or by aeroplane. The vast majority of the islands are part of the Tongass National Forest. In order of land area, the largest islands are Prince of Wales Island, Chichagof Island, Admiralty Island, Baranof Island, Revillagigedo Island, Kupreanof Island, Kuiu Island, Etolin Island, Dall Island, Wrangell Island, Mitkof Island, Zarembo Island, Kosciusko Island, Kruzof Island, Annette Island, Gravin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Glaciers
A glacier ( ) or () is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. Because glacial mass is affected by long-term climate changes, e.g., precipitation, mean temperature, and cloud cover, glacial mass changes are considered among the most sensitive indicators of climate change. There are about 198,000 to 200,000 glaciers in the world. Glaciers by continent Africa Africa, specifically East Africa, has contained glacial regions, possibly as far back as the last glacier maximum 10 to 15 thousand years ago. Seasonal snow does exist on the highest peaks of East Africa as well as in the Drakensberg Range of South Africa, the Stormberg Mountains, and the Atlas Mountains in Morocco. Currently, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers Of Glacier Bay National Park And Preserve
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between latitudes 35°N and 35°S, glaciers occur only in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
