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Marinelli Glacier
Marinelli Glacier is a tidewater glacier located in Alberto de Agostini National Park, Isla Grande de Tierra del Fuego. The glacier spills out from the backbone of the Cordillera Darwin and calves into Ainsworth Bay, an embayment of the Almirantazgo Fjord. The Marinelli Glacier is in a state of retreat, beginning at least as early as 1960B.L. Boyda, J.B. Andersona, J.S. Wellnerb and R.A. Fernández, 2008 and continuing to the present time.C. Michael Hogan, 2008 Meltwater of Marinelli glacier discharges to form the headwaters of Marinelli Creek. See also *Retreat of glaciers since 1850 The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and, in the longer term, the level of the oceans. Deglaciation occu ... Line notes References * B.L. Boyda, J.B. Andersona, J.S. Wellnerb and R.A. Fernández (2008) "The sedimentary record of glacial retreat, Marinel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chile
Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east and the Pacific Ocean to the west. Chile covers an area of , with a population of 17.5 million as of 2017. It shares land borders with Peru to the north, Bolivia to the north-east, Argentina to the east, and the Drake Passage in the far south. Chile also controls the Pacific islands of Juan Fernández, Isla Salas y Gómez, Desventuradas, and Easter Island in Oceania. It also claims about of Antarctica under the Chilean Antarctic Territory. The country's capital and largest city is Santiago, and its national language is Spanish. Spain conquered and colonized the region in the mid-16th century, replacing Inca rule, but failing to conquer the independent Mapuche who inhabited what is now south-central Chile. In 1818, after declaring in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tidewater Glacier
The tidewater glacier cycle is the typically centuries-long behavior of tidewater glaciers that consists of recurring periods of advance alternating with rapid retreat and punctuated by periods of stability. During portions of its cycle, a tidewater glacier is relatively insensitive to climate change. Calving rate of tidewater glaciers While climate is the main factor affecting the behavior of all glaciers, additional factors affect calving (iceberg-producing) tidewater glaciers. These glaciers terminate abruptly at the ocean interface, with large pieces of the glacier fracturing and separating, or calving, from the ice front as icebergs. Climate change causes a shift in the equilibrium line altitude (ELA) of a glacier. This is the imaginary line on a glacier, above which snow accumulates faster than it ablates, and below which, the reverse is the case. This altitude shift, in turn, prompts a retreat or advance of the terminus toward a new steady-state position. However, this ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alberto De Agostini National Park
Alberto de Agostini National Park () is a protected area that was created on January 22, 1965, on land that was formerly part of the "Hollanda" forest reserve and "Hernando de Magallanes National Park". It covers and includes the Cordillera Darwin mountain range, which is the final land-based stretch of the Andes before it becomes a chain of mountains appearing as small islands that sink into the Pacific Ocean and the Beagle Channel. The park, along with Cabo de Hornos National Park, was designated a Biosphere Reserve by UNESCO in 2005. As part of the Magallanes Sub-Polar (or Sub-Antarctic) Evergreen Rainforest, UNESCO highlights the area’s "mosaic of contrasting ecosystems and unique and singular characteristics on a world level." Several tidewater glaciers and steep fjords can be found in the park. It also comprises the Gordon, Cook and Londonderry islands, as well as part of Hoste Island (excluding the Hardy Peninsula and other portions). History The park is named after o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isla Grande De Tierra Del Fuego
Isla Grande de Tierra del Fuego (English: ''Big Island of the Land of Fire'') also formerly ''Isla de Xátiva'' Cercle Català d'Història, ''www.cch.cat'', accessed 5 February 2021 is an island near the southern tip of from which it is separated by the . The western portion (61.4%) of the island () is in ( [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordillera Darwin
The Cordillera Darwin is an extensive mountain range mantled by an ice field that is located in Chile. Description Cordillera Darwin is located in the southwestern portion of Isla Grande de Tierra del Fuego, entirely within the Chilean territory. It is part of the longest Andes range and includes the highest mountains in Tierra del Fuego, with elevations reaching over ; The ice field of the Cordillera Darwin covers an area greater than . The Darwin Range extends in a west–east direction from the Monte Sarmiento (located in the vicinity of Magdalena Channel) to Yendegaia Valley. It is bounded by the Almirantazgo Fjord on the north and the Beagle Channel on the south. The range is named after Charles Darwin and is the most important feature of Alberto de Agostini National Park, which includes a number of well-known glaciers including the Marinelli Glacier, which is now under prolonged retreat as of 2008. In October 2011, a team of French mountaineers from the French Army's Grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ainsworth Bay, Chile
Ainsworth Bay in the Tierra del Fuego region of Chile is a coastal inlet fed by the meltwater of Marinelli Glacier. The Marinelli Glacier is in a state of retreat.C. Michael Hogan. 2008 See also * Southern elephant seal The southern elephant seal (''Mirounga leonina'') is one of two species of elephant seals. It is the largest member of the clade Pinnipedia and the order Carnivora, as well as the largest extant marine mammal that is not a cetacean. It gets its ... * References *C. Michael Hogan. 200''Bahia Wulaia Dome Middens'', ''Megalithic Portal'', ed. Andy Burnham* Eric Earle Shipton (2007) ''Tierra del Fuego: The Fatal Lodestone'', Published by Readers Union, 175 pages Line notes Bays of Chile Bodies of water of Magallanes Region Isla Grande de Tierra del Fuego {{MagellanAntarctic-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Almirantazgo Fjord
Almirantazgo Fjord ( es, Fiordo Almirantazgo), also known as Almirantazgo Sound ( es, Seno Almirantazgo) or Admiralty Sound, is a Chilean fjord located in the far south of the country at .Earth Info, ''earth-info.nga.mil'' webpage: . The fjord cuts deeply into the west coast of the Isla Grande de Tierra del Fuego, extending southeastwards from the Whiteside Channel, which separates Isla Grande from Dawson Island. On its south side several smaller fjords and bays make significant indentations into the north coastline of the Cordillera Darwin. One of these, Ainsworth Bay, is home to a colony of elephant seals. See also * Marinelli Creek Marinelli Creek is a watercourse whose headwaters emerge from the melting of Marinelli Glacier in Tierra del Fuego, Chile. Marinelli Creek discharges to Ainsworth Bay, a notable inlet along the Almirantazgo Fjord. The Marinelli Glacier has been i ... References Fjords of Chile Bodies of water of Magallanes Region Isla Grande de Tierra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marinelli Creek
Marinelli Creek is a watercourse whose headwaters emerge from the melting of Marinelli Glacier in Tierra del Fuego, Chile. Marinelli Creek discharges to Ainsworth Bay, a notable inlet along the Almirantazgo Fjord. The Marinelli Glacier has been in a state of retreat since at least 1943, and the retreat continues to the present time of 2008.C. Michael Hogan, 2008 See also * Southern elephant seal The southern elephant seal (''Mirounga leonina'') is one of two species of elephant seals. It is the largest member of the clade Pinnipedia and the order Carnivora, as well as the largest extant marine mammal that is not a cetacean. It gets its ... References Sources * C. Michael Hogan. 200''Bahia Wulaia Dome Middens'', The Megalithic Portal, ed. A. Burnham Rivers of Chile Rivers of Magallanes Region Isla Grande de Tierra del Fuego {{Chile-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retreat Of Glaciers Since 1850
The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and, in the longer term, the level of the oceans. Deglaciation occurs naturally at the end of ice ages, but glaciologists find the current glacier retreat is accelerated by the measured increase of atmospheric greenhouse gases—an effect of climate change. Mid-latitude mountain ranges such as the Himalayas, Rockies, Alps, Cascades, Southern Alps, and the southern Andes, as well as isolated tropical summits such as Mount Kilimanjaro in Africa, are showing some of the largest proportionate glacial losses. Excluding peripheral glaciers of ice sheets, the total cumulated global glacial losses over the 26 year period from 1993–2018 were likely 5500 gigatons, or 210 gigatons per yr.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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers Of Magallanes Region
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] |
