Text Box:

The process of glacier establishment, growth and flow is called glaciation. The corresponding area of study is called glaciology. Glaciers are important components of the global cryosphere.Glacial ice is the largest reservoir of freshwater on Earth. Many glaciers store water during one season and release it later as meltwater, a water source that is especially important for plants, animals and human uses when other sources may be scant.    

Glacier

There are places in the world where net annual snow accumulation exceeds the melting, which are called snow zone/polar.  A glacier large persistent body of ice. Glacier is dynamic with respect to time and space. Originating on land, a glacier flows slowly towards downstream due to stresses induced by its weight  and transports rocks, debris and ices from its substrate and resultant landforms like cirques and moraines.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Glacial Lake

Glacial Lake is the large volume of water that origins from melted glaciers. Normally, lake is dammed  either by debris or ice moraine. The suspended rock minerals support a large population of algae, making the water appear green. Lakes are clearly visible by any remote sensing sensors. Depending upon the age, geology, climate  and self pressure, lake is subjected to burst at any time.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Glacial Lake Outburst Floods (GLOFs)

GLOFs is flash flood that occurs suddenly due to outbreak of glaciers lake dam. Phenomenon is unpredictable,  this happen due to erosion, a buildup of water pressure, an avalanche of heavy snow, an earthquake or cryoseism, volcanic eruptions under the ice, or cascading effect of another GLOFs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Further Resources

             All about glaciers (Click Here…)

             Hindu Kush-Himalayan Glaciers (Click Here… )

             Glaciers and Glacier Change (Click Here….)

Glaciers Monitoring and Early Warning System

Remote Sensing Perspective

Figure3 : Photographs of glaciers

Figure4: Photograph of Glacial Lake

Design by:

Milan Budhathoki, MS  Geo-Information Science, Salem State University, Salem, MA

m_budhathoki@salemstate.edu

                                                                                                        Last updated on  22nd November,2010

Glaciers

Figure5: Photograph of GLOF