Mass balance. Glossary - Terms Glacier Types. An introduction to Glacier Mass Balance. Glacier mass balance | Measuring mass balance | Mass balance gradients | Mass balance through time | Further reading | References | Comments | Glacier mass balance Glacier mass balance and atmospheric circulation.
By NASA. From Wikimedia Commons. Geo563 7.SubglErosion. 0495555061 137189. State of the Climate: Mass Balance of Mountain Glaciers in 2011. Alpine glaciers have long been recognized as sensitive indicators of climate: just as glaciers often shrink due to melting in summer and grow by accumulating new snow in winter, changes in their size over longer periods indicate a warming or cooling climate.
Annual measurements of a glacier’s thickness or length are used to tell if accumulation of snow or loss of ice has dominated over the year. The difference in accumulation and loss is called a glacier’s mass balance. Climate Change: Glacier Mass Balance. In Earth’s highest mountains and across the land in both polar regions, brief summers were long overpowered by snowy winters.
Over many centuries, layers of snow accumulated to form thick glaciers. Present since the last ice age, most of the world’s glaciers are now shrinking or disappearing altogether. Explore this interactive graph: Click and drag either axis to view different parts of the graph. Glossary - Terms Glacier Types. Mass balance. Glacial erosion. Cairngorms. Cairngorms. During the Ice Age, or Pleistocene, (around 2.6 million years ago) glaciers covered large parts of the northern hemisphere.
During this time there were many long, cold periods (glacials), broken by shorter, warmer intervals (interglacials) when the climate was similar to that of the present day or slightly warmer. During the colder phases of the Ice Age, mountain glaciers and icefields formed repeatedly in the Highlands. When the climate was at its very coldest, much larger ice sheets covered the whole of Scotland. National Snow and Ice Data Center. Kahiltna Glacier is a long mountain glacier, into which several tributary glaciers flow.
—Credit: Photographer unknown. 1942. Kahiltna Glacier: From the Glacier Photograph Collection. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. National Snow and Ice Data Center. Types of glacier. 1.
Bennett, M.R., 2003. Ice streams as the arteries of an ice sheet: their mechanics, stability and significance. Types of Glaciers (and how they behave) - Extreme Ice Survey. Glacier and ice stream movement is complex.
Although glaciers are solid ice, they are in constant motion. Many glaciers end at the sea, where chunks of ice break off, or calve, into the water.