"According to research geologist in the past geological age, the great ice sheet had to cover up most of the Earth, including the current does not exist, including glaciers, and now see glaciers, its extension of the scope of the past must be than it is now larger and more. " This is the theory of glaciers. As early as 1839 by the Swiss scholar gais Asia (Louis Agassiz) founded.
2. Glacier history
In the latter half of the nineteenth century, many geologists in search of glaciers around the world left behind by glacial sediments and topography, according to radioactive dating, fossils and varying degrees of weathering of soil and found in the Pleistocene period, many regions of the Northern Hemisphere glaciers are covered by the mainland, covering an area of the world's land area of almost 29%, then, because of melting glaciers, retreat of glaciers in the area now accounts for only 10% of land area
Pleistocene period, there have been several well-being of the global climate change, the ensuing glaciation not happen again. Cold weather, the snowfall increased, large-scale development of the glacier, known as the Ice Age; When the climate warming, the ice age receded mass, called interglacial. The most recent Ice Age occurred 75000 years about two years ago, the earliest one in a million years to the Ice Age about two million years ago. Now the world is considered the fourth is in a post-glacial period in the interglacial stage. This shows that the Quaternary Pleistocene is the world's most important period of a glacier in the history of geology known as the Great Ice Age (Great Ice Age).
Quaternary ago in the world have also taken place in several large-scale glacier period, mainly by the formation of different geological age of the moraine of the emergence of complex been proven.
Pleistocene ice age has been in about ten thousand years before the end of the Earth's land surface but more than half are still working with glacial climate conditions, either directly or indirectly related to a variety of terrain, only to then understand the geomorphological process, will it be possible to recognize topography and climate at the time the relationship between.
3. Glacier impact
Glaciers on the impact of sea level around the world is extremely large increase in evaporation of sea water, some of which will be the form of snow fell, snow melted into water in the last into the sea. However, in the history of the cold or glacial period, the balance will be destroyed, because of ice and snow remain in the ground does not move, the sea level will drop, a phenomenon known as "sea-surface changes." In the Great Ice Age comes, a large number of evaporation of seawater has been concentrated in the land caused by glaciers, the sea surface that is generally declined; in the interglacial stage, the gradual melting of glaciers in the water inflow into the ocean, sea water has gradually picked up. The world is currently in an interglacial, sea water rose by about one per year ~ 2 mm. Today, if Antarctica melting ice, rising sea levels will be 60 meters.
3. Glacier impact
Glaciers on the impact of sea level around the world is extremely large increase in evaporation of sea water, some of which will be the form of snow fell, snow melted into water in the last into the sea. However, in the history of the cold or glacial period, the balance will be destroyed, because of ice and snow remain in the ground does not move, the sea level will drop, a phenomenon known as "sea-surface changes." In the Great Ice Age comes, a large number of evaporation of seawater has been concentrated in the land caused by glaciers, the sea surface that is generally declined; in the interglacial stage, the gradual melting of glaciers in the water inflow into the ocean, sea water has gradually picked up. The world is currently in an interglacial, sea water rose by about one per year ~ 2 mm. Today, if Antarctica melting ice, rising sea levels will be 60 meters.
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