Glaciers script - Urspringschule

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 Text to the photostory about glaciers ( link at the bottom)

A glacier is a persistent body of dense ice that is constantly moving under its own gravity; it
forms where the accumulation of snow exceeds its ablation (melting and sublimation) over
many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their
weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock
and debris from their substrate to create landforms such as cirques and moraines. Glaciers
form only on land and are 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 in the polar regions, but
glaciers may be found in mountain ranges on every continent except Australia, and on a few
high-latitude oceanic islands.

Glacial ice is the largest reservoir of freshwater on Earth. Many glaciers from temperate,
alpine and seasonal polar climates store water as ice during the colder seasons and release it
later in the form of meltwater as warmer summer temperatures cause the glacier to melt,
creating a water source that is especially important for plants, animals and human uses when
other sources may be scant. Within high altitude and Antarctic environments, the seasonal
temperature difference is often not sufficient to release meltwater.

Because glacial mass is affected by long-term climate changes, and cloud cover. Glacial mass
changes are considered among the most sensitive indicators of climate change and are a
major source of variations in sea level.

If all land ice melted, sea level would rise approximately 70 meters worldwide.

In Washington State alone, glaciers provide 1.8 trillion liters of water each summer. This
means that, if the glaciers melt away; there will be little freshwater left for people to use.

Presently, 10% of land area on Earth is covered with glacial ice, including glaciers, ice caps,
and the ice sheets of Greenland and Antarctica.

Glaciers store about 75% of the world's freshwater.

Glaciers are water sources that is especially important for plants, animals and human uses
when other sources may be scant. Within high altitude and Antarctic environments, the
seasonal temperature difference is often not sufficient to release meltwater.
London? A memory. Venice? Reclaimed by the Adriatic Sea. Thousands of years from now,
in this catastrophic scenario, the Netherlands will have long since surrendered to the sea,
and most of Denmark will be gone too. Meanwhile, the Mediterranean's expanding waters
will also have swelled the Black and Caspian Seas.
Sources:
http://nsidc.org/cryosphere/glaciers/quickfacts.html
http://en.wikipedia.org/wiki/Glacier
http://ngm.nationalgeographic.com/2013/09/rising-seas/if-ice-melted-map
From the left:
Jessica Schelinski, Henriette Holmøy, Kim Midtlid, Håkon Tandstad and Baudouin Nollet.
Link to video/photostory
https://vimeo.com/90473464
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