Where on Earth are temperate glaciers located?
A temperate glacier (as opposed to a polar glacier) is a glacier that’s essentially at the melting point, so liquid water coexists with glacier ice. A small change in temperature can have a major impact on temperate glacier melting, area, and volume. Temperate glaciers exist on the continents of North America, South America, Europe, Africa, and Asia, on both islands of New Zealand, and on the island of Irian Jaya. Additionally, some of the glaciers of the Antarctic Peninsula and some of Greenland’s southern outlet glaciers are temperate.
Mount Rainier, Washington, at 14,410 feet (4,393 meters), the highest peak in the Cascade Range, is a dormant volcano whose glacier ice cover exceeds that of any other mountain in the conterminous United States. Mount Rainier has approximately 26 glaciers. It contains more than five times the glacier area of all the other...Read Full Answer
- The age of the oldest glacier ice in Antarctica may approach 1,000,000 years old
- The age of the oldest glacier ice in Greenland is more than 100,000 years old
- The age of the oldest Alaskan glacier ice ever recovered (from a basin between Mt. Bona and Mt. Churchill) is about 30,000
Yes and no. It depends on which glaciers you are considering. Parts of the Antarctic Continent have had continuous glacier cover for perhaps as long as 20 million years. Other areas, such as valley glaciers of the Antarctic Peninsula and glaciers of the Transantarctic Mountains may date from the early Pleistocene. For...Read Full Answer
Based on the most recent comprehensive survey in 2011, there were about 27,000 glaciers in Alaska. However, the number of glaciers is a misleading statistic. Scientists are more interested in total glacial land coverage as a measure. The number of glaciers is less important since large ones can split up into several as they...Read Full Answer
Glaciers exist in both the United States and Canada. Most U.S. glaciers are in Alaska; others can be found in Washington, Oregon, California, Montana, Wyoming, Colorado, and Nevada (Wheeler Peak Glacier in Great Basin National Park).
Reputedly, Utah’s Timpanogos Glacier is now a rock glacier (in which the ice is...Read Full Answer
While there is no global standard for what size a body of ice must be to be considered a glacier, USGS scientists in Glacier National Park use the commonly accepted guideline of 0.1 square kilometers (about 25 acres) as the minimum size of a glacier. Below this size, ice is generally stagnant and does not have enough mass...Read Full Answer
A glacier is a large, perennial accumulation of crystalline ice, snow, rock, sediment, and often liquid water that originates on land and moves down slope under the influence of its own weight and gravity. Typically, glaciers exist and may even form in areas where:
- mean annual temperatures are close to the
The warming climate has dramatically reduced the size of 39 glaciers in Montana since 1966, some by as much as 85 percent, according to data released by the U.S. Geological Survey and Portland State University.
In this Landsat EarthView, one glacier in Chile bucks the global trend:
ANCHORAGE, Alaska — This year marks the 50th anniversary of one of the longest continuous glacier research efforts in North America.
Frozen bodies of ice cover nearly 10 percent of the state of Alaska, but the influence of glaciers on the environment, tourism, fisheries, hydropower, and other important Alaska resources is rarely discussed.
ANCHORAGE, Alaska Melting glaciers are not just impacting sea level, they are also affecting the flow of organic carbon to the world’s oceans, according to new research that provides the first ever global-scale estimates for the storage and release of organic carbon from glaciers.
The persistence of an already rare aquatic insect, the western glacier stonefly, is being imperiled by the loss of glaciers and increased stream temperatures due to climate warming in mountain ecosystems, according to a new study released in Freshwater Science.
Swiftcurrent Glacier 1910 - 2016 animation
- Glacier Numerology – The how big, how long, how thick, how much, how often, of glacier science.
- Glacier Photography – While a picture may be worth a thousand words, a collection of images may tell a complete forensic story.
- Glacier Geophysics – How new technologies are being introduced to reexamine and refine decades old glacier analyses.
Monitoring glaciers in Glacier National Park.
Mapping the glacier's edge in Glacier National Park.
Looking out the mouth of Reynolds Glacier in Glacier National Park. Glacier National Park is iconic of the combined impacts of climate change and snow and ice loss – over 80 percent of the park’s glaciers have been lost since the mid-19th century.
View looking north of heavily glaciated terrain from Mount Massive (14,429 ft/4,398 m) towards the Holy Cross Wilderness, northern Sawatch Range, Colorado.
Scientists sample for alpine insects in streams like this near Blackfoot Glacier in Glacier National Park. Alpine streams environments in the northern Rocky Mountains are especially vulnerable to climate change due to rapid warming resulting in loss of glaciers and snowpack. Glacier National Park is iconic of the combined impacts of climate change and snow and ice loss – over 80 percent of the park’s glaciers have been lost since the mid-19th century.
When past sea levels were higher, where did the water come from? Here are the possibilities, with the amount of sea level rise they could provide now.
Retreating glacier south of Mt. Pendleton in Denali National Park, Alaska, with runoff from glacial melt seen in the foreground.