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- Grinnell Glacier is in the heart of Glacier National Park in the U.S. state of Montana. The glacier is named for George Bird Grinnell, an early American conservationist and explorer, who was also a strong advocate of ensuring the creation of Glacier National Park. The glacier is in the Lewis Range and rests on the north flank of Mount Gould at an altitude averaging 7,000 feet (2,100 m), in the Many Glacier region of the park. The glacier has been one of the most photographed glaciers in the park and many of these photographs date back to the mid 19th century during the late Little Ice Age. When compared with images taken over subsequent years, the glacier has obviously retreated substantially. In 1850, Grinnell Glacier measured 710 acres (2.9 km2), including the area of The Salamander Glacier, an ice apron or shelf glacier that used to be attached to Grinnell, but is now separate. By 1993, Grinnell Glacier measured 220 acres (0.89 km2) and The Salamander measured 57 acres (0.23 km2). Between 1966 and 2005, Grinnell Glacier lost almost 40 percent of its acreage.Glaciologists have predicted that if carbon dioxide levels increase at a worst-case scenario, all the glaciers in the park, including Grinnell, will disappear by the year 2030. However, under a modest increase in overall carbon dioxide levels, some glaciers will remain until the year 2277. Gem Glacier, one of the smallest remaining glaciers in the park, is located on the Garden Wall above Grinnell. Repeat photography taken between the years 1938 and 2009 (as shown below) show that Grinnell Glacier has retreated significantly over that period. The Salamander and Gem Glaciers have shown little change in area over the same period of time. The Salamander receives its name for its shape and its coloring, which comes from the serratia bacteria that grows on it. The glacier can be reached after a 6-mile (9.7 km) hike from a trailhead beginning at Swiftcurrent Lake. The trail has an altitude gain of just over 1,600 ft (490 m), with the majority of that in the second half of the hike. (en)
- Le glacier Grinnell est un glacier situé dans la région de Many Glacier au cœur du parc national de Glacier dans l'État du Montana aux États-Unis. Le glacier tire son nom de George Bird Grinnell qui fut un des premiers explorateurs et protecteurs de la région. Celui-ci batailla de nombreuses années pour que le parc national de Glacier soit créé. Le glacier se situe dans les montagnes Rocheuses sur le chaînon Lewis sur le versant nord du mont Gould à une altitude proche de 2 133 mètres. Grinnell est l'un des glaciers les plus photographiés du parc depuis le milieu du XIXe siècle. En comparant les premières images avec celles plus récentes, il fut aisé de montrer l’importance de la fonte de ce glacier, preuve que les températures locales ont augmenté avec le temps. Ce phénomène est également visible sur d’autres glaciers à travers le monde ce qui montre un réchauffement global des températures. En 1850, le glacier avait une superficie de 2,88 km2 alors qu'en 1993, il s’était coupé en deux parties mesurant 0,88 km2 et 0,23 km2. Des glaciologues ont prédit que tous les glaciers du parc, dont le glacier Grinnell, pourraient disparaître d’ici 2030. (fr)
- O glaciar Grinnell está situado no coração do Parque Nacional Glacier no estado de Montana, nos Estados Unidos. Ostenta o nome de , um dos primeiros conservacionistas e explorador, defensor da criação do Glacier National Park. O glaciar situa-se nas e encontra-se no flanco norte do a uma altitude média de 2 133 metros. Trata-se de um dos glaciares mais fotografados neste parque, com muitas das fotografias a datarem do século XIX. Quando comparadas com imagens obtidas em anos subsequentes, estas fotografias mostram que o glaciar recuou claramente de forma substancial. Em 1850 o glaciar Grinnell tinha uma área igual a 2,88 km², incluindo um glaciar mais pequeno adjacente (Salamander). Por altura da última medição em 1993, o glaciar Grinnel media 0,88 km² e o Salamander 0,23 km². Os glaciólogos que estudaram os glaciares do parque crêem que a menos que o clima arrefeça e a queda de neve aumente significativamente, todos os glaciares do parque, incluindo o Grinnel, desaparecerão por volta de 2030. Fotografias obtidas a partir do mesmo local entre 1938 e 2005 (ver abaixo) demonstram que o glaciar recuou substancialmente nos últimos 65 anos. (pt)
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- Grinnell Glacier is in the heart of Glacier National Park in the U.S. state of Montana. The glacier is named for George Bird Grinnell, an early American conservationist and explorer, who was also a strong advocate of ensuring the creation of Glacier National Park. The glacier is in the Lewis Range and rests on the north flank of Mount Gould at an altitude averaging 7,000 feet (2,100 m), in the Many Glacier region of the park. (en)
- Le glacier Grinnell est un glacier situé dans la région de Many Glacier au cœur du parc national de Glacier dans l'État du Montana aux États-Unis. Le glacier tire son nom de George Bird Grinnell qui fut un des premiers explorateurs et protecteurs de la région. Celui-ci batailla de nombreuses années pour que le parc national de Glacier soit créé. Le glacier se situe dans les montagnes Rocheuses sur le chaînon Lewis sur le versant nord du mont Gould à une altitude proche de 2 133 mètres. (fr)
- O glaciar Grinnell está situado no coração do Parque Nacional Glacier no estado de Montana, nos Estados Unidos. Ostenta o nome de , um dos primeiros conservacionistas e explorador, defensor da criação do Glacier National Park. O glaciar situa-se nas e encontra-se no flanco norte do a uma altitude média de 2 133 metros. (pt)
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