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Glacier Cave
A glacier cave is a cave formed within the ice of a glacier. Glacier caves are often called ice caves, but the latter term is properly used to describe bedrock caves that contain year-round ice. Overview Glacier caves form in the bottom edge of glacier ice. Although with low permeability in glacier ice, most glacier caves are started by water running through or under the glacier. This water often originates on the glacier's surface through melting, entering the ice at a Moulin (geology), moulin and exiting at the glacier's snout at base level. Heat transfer from the water can cause sufficient melting to create an air-filled cavity, sometimes aided by solifluction. The water flow must dissipate enough heat to keep the glacier ice refreezing in polar areas. Air movement can then assist enlargement through melting in summer and Sublimation (chemistry), sublimation in winter. Meltwater reaches the bottom of the ice sheet through basement melting caused by geothermal heating and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
153 - Glacier Perito Moreno - Grotte Glaciaire - Janvier 2010
Year 153 (Roman numerals, CLIII) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Rusticus and Rufinus (or, less frequently, year 906 ''Ab urbe condita''). The denomination 153 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Minor uprisings occur in Roman Egypt against Roman rule. Asia * Change of era name from ''Yuanjia'' (3rd year) to ''Yongxing'' of the Chinese Han dynasty, Han Dynasty. Births * Didia Clara, daughter of Didius Julianus * Kong Rong, Chinese official and warlord (d. 208) * Zhang Hong (Han dynasty), Zhang Hong, Chinese official and politician (d. 212) Deaths *Tiberius Julius Rhoemetalces, Roman client king References {{DEFAULTSORT:153 153, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the region's westernmost and most list of countries and dependencies by population density, sparsely populated country. Its Capital city, capital and largest city is Reykjavík, which is home to about 36% of the country's roughly 380,000 residents (excluding nearby towns/suburbs, which are separate municipalities). The official language of the country is Icelandic language, Icelandic. Iceland is on a rift between Plate tectonics, tectonic plates, and its geologic activity includes geysers and frequent Types of volcanic eruptions, volcanic eruptions. The interior consists of a volcanic plateau with sand and lava fields, mountains and glaciers, and many Glacial stream, glacial rivers flow to the sea through the Upland and lowland, lowlands. Iceland i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciology
Glaciology (; ) is the scientific study of glaciers, or, more generally, ice and natural phenomena that involve ice. Glaciology is an interdisciplinary Earth science that integrates geophysics, geology, physical geography, geomorphology, climatology, meteorology, hydrology, biology, and ecology. The impact of glaciers on people includes the fields of human geography and anthropology. The discoveries of water ice on the Moon, Mars, Europa (moon), Europa and Pluto add an extraterrestrial component to the field, which is referred to as "astroglaciology". Overview A glacier is a persistent body of dense ice, a form of rock) formed from snow falling and accumulating over a long period of time; glaciers move very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of accumulation, as in continental glaciers. Areas of study within glaciology include glacial history and the reconstruction of past glaciation. A glaciologist is a person ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titlis
Titlis is a mountain of the Uri Alps, located on the border between the cantons of Obwalden and Bern. At above sea level, it is the highest summit of the range north of the Susten Pass, between the Bernese Oberland and Central Switzerland. It is mainly accessed from Engelberg (OW) on the north side and is famous as the site of the world's first rotating cable car. The cable car system connects Engelberg () to the summit of ''Klein Titlis'' () through the three stages of '' Gerschnialp'' (), '' Trübsee'' () and ''Stand'' (). In 2016, a direct route was created that bypassed Geraschnialp, going directly to Trübsee. The last part of cable car leads above the glacier. At ''Klein Titlis'', it is possible to visit an illuminated glacier cave from an entrance within the cable-car station, which also includes shops and restaurants. The Titlis Cliff Walk, the highest elevation suspension bridge in Europe, opened in December 2012, giving views across the Alps. Many people use T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speilsalen
Speilsalen () was a natural glacier cave formed by a river underneath a glacier in the Trollheimen mountains in Oppdal Municipality in Trøndelag county, Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of .... It was located at the northeast base of the mountain Blåhøa. Under favourable conditions late summer, it was possible to walk the from one end to the other underneath the glacier. It was never considered safe to walk under a glacier. Speilsalen collapsed in August 2007. References External links Article with pictures from glaciers in Trollheimen Glaciers of Norway Oppdal Landforms of Trøndelag Ice caves {{norway-glacier-stub Former glaciers of Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perito Moreno Glacier
The Perito Moreno (), Francisco Gormaz or Bismarck Glacier is a glacier located in Los Glaciares National Park in southwest Santa Cruz Province, Argentina, and originated in the Magallanes Region in Chile, being also part of the Bernardo O'Higgins National Park. It is one of the most important tourist attractions in the Argentine Patagonia. The ice formation, in length, is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system shared with Chile which has a small part of the origins of the glacier. This ice field is the world's third largest reserve of fresh water. The Perito Moreno Glacier, located from El Calafate, was named after the explorer Francisco Moreno, a pioneer who studied the region in the 19th century and played a major role in defending the Argentinian thesis in the 1902 Arbitral award of the Andes between Argentina and Chile. Status Since 2020 the glacier has been retreating on its northern front, possibly due to clim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciologist
Glaciology (; ) is the scientific study of glaciers, or, more generally, ice and natural phenomena that involve ice. Glaciology is an interdisciplinary Earth science that integrates geophysics, geology, physical geography, geomorphology, climatology, meteorology, hydrology, biology, and ecology. The impact of glaciers on people includes the fields of human geography and anthropology. The discoveries of water ice on the Moon, Mars, Europa and Pluto add an extraterrestrial component to the field, which is referred to as "astroglaciology". Overview A glacier is a persistent body of dense ice, a form of rock) formed from snow falling and accumulating over a long period of time; glaciers move very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of accumulation, as in continental glaciers. Areas of study within glaciology include glacial history and the reconstruction of past glaciation. A glaciologist is a person who studies g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rainier
Mount Rainier ( ), also known as Tahoma, is a large active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about south-southeast of Seattle. With an officially recognized summit elevation of at the Columbia Crest, it is the highest mountain in the U.S. state of Washington (state), Washington, the most Topographic prominence, topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc. Due to its high probability of an eruption in the near future and proximity to a Seattle metropolitan area, major urban area, Mount Rainier is considered one of the most dangerous volcanoes in the world, and it is on the Decade Volcano list. The large amount of glacial ice means that Mount Rainier could produce massive lahars that could threaten the entire Puyallup River valley and other river valleys draining Mount Rainier, including the Carbon River, Car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paradise Ice Caves
The Paradise Ice Caves (also known as the Paradise Glacier Caves) were a system of interconnected glacier caves located within Mount Rainier's Paradise Glacier in the United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 .... These glacier caves were visited and documented at least as early as 1908. They have a varied natural history, as their size and even existence has changed over time, from a maximum surveyed length of 13.25 kilometers in 1978, to not existing at all during both the 1940s and 1990s due to glacial recession. In 1978 they were the longest mapped system of glacier caves in the world. References External links Paradise Ice Caves and Camp MuirParadise Ice Caves Tour, Mt. Rainier, ca. 1957 Caves of Washington (state) Glaciology of the United States Moun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Retreat
The retreat of glaciers since 1850 is a well-documented effect of climate change. The retreat of mountain glaciers provides evidence for the rise in global temperatures since the late 19th century. Examples include mountain glaciers in western North America, Asia, the Alps in central Europe, and tropical and subtropical regions of South America and Africa. Since glacial mass is affected by long-term climatic changes, e.g. precipitation, mean temperature, and cloud cover, glacial mass changes are one of the most sensitive indicators of climate change. The retreat of glaciers is also a major reason for sea level rise. Excluding peripheral glaciers of ice sheets, the total cumulated global glacial losses over the 26 years from 1993 to 2018 were likely 5500 gigatons, or 210 gigatons per year.Fox-Kemper, B., H.T. Hewitt, C. Xiao, G. Aðalgeirsdóttir, S.S. Drijfhout, T.L. Edwards, N.R. Golledge, M. Hemer, R.E. Kopp, G. Krinner, A. Mix, D. Notz, S. Nowicki, I.S. Nurhati, L. Ruiz, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Motion
Glacial motion is the motion of glaciers, which can be likened to rivers of ice. It has played an important role in sculpting many landscapes. Most lakes in the world occupy basins scoured out by glaciers. Glacial motion can be fast (up to , observed on Jakobshavn Isbræ in Greenland) or slow ( on small glaciers or in the center of ice sheets), but is typically around . Processes of motion Glacier motion occurs from four processes, all driven by gravity: basal sliding, glacial quakes generating fractional movements of large sections of ice, bed deformation, and internal deformation. * In the case of basal sliding, the entire glacier slides over its bed. This type of motion is enhanced if the bed is soft sediment, if the glacier bed is thawed and if meltwater is prevalent. * Bed deformation is thus usually limited to areas of sliding. Seasonal melt ponding and penetrating under glaciers shows seasonal acceleration and deceleration of ice flows affecting whole icesheets. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
