Decadal Glacier Changes in Bhutan Himalaya
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The user can perform query analysis of glaciers for the selected decade. Multiple query conditions can be added by clicking the " + " button .
The user can perform query analysis of glaciers for the four decades. Multiple query conditions can be added by clicking the " + " button .
| Year | Glacier Area (Sq.Km) | Ice Reserve (Cubic.Km) |
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Decadal Glacier Changes in Bhutan Himalaya
Glaciers are repositories of information for climate change studies as they are sensitive to changes in temperature, precipitation, and at-surface solar radiation. Due to increased melting, shrinking, and retreat of glaciers in recent decades, the number of glaciers has increased and the area has decreased in the Himalayas.
The application showcases changes in the glaciers in Bhutan from 1980, 1990, 2000, and 2010. The interactive glacier maps were prepared for four decades using a uniform data set and methodology, which provide a scientific basis for understanding the changes taking place in the glacial environment in the eastern Himalayas of Bhutan.
Data
Glacier data are derived from LandSat TM and LandSat ETM+ images using object based semi-automatic feature extraction. Additional attributes such as glacier area, estimated ice reserve, slope, elevation, and aspect are also derived for each glacier.
Analytical tools
The statistics on glaciers can be viewed for the whole country or at disaggregated
basin and sub-basin levels.
The distribution of glaciers according to ice reserve and glacier area, elevation
range, and hypsograph are presented as charts and tables through an interactive
interface.
Tables with detailed information are provided for individual glaciers with corresponding
charts. A time slider tool is provided to visualize decadal changes of each glacier.
Acknowledgement
People involved in the development of this web application are as follows:
Data preparation of Bhutan Glaciers
Mr.Samjwal Ratna Bajracharya (Coordinator at SERVIR ASTTT.ICIMOD)Mrs.Finu Shrestha(Research Associate GIS,ICIMOD)
Mr.Sudan Bikash Maharjan(Research associate RS/GIS, Geologist at ICIMOD)
Web Application Developer
Mr.Bikash Dongol(Web/GIS Programmer, MENRIS,ICIMOD)Mr.Sameer Bajracharya(Research Associate GIS)
Mr.Samriddhi Shakya(Consultant,MENRIS,ICIMOD)
For further information contact: menris@icimod.org
Mountain Environment and Natural Resources’ Information System
International Centre for Integrated Mountain Development
http://www.icimod.org, http://geoportal.icimod.org
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Decadal Glacier Changes in Bhutan Himalaya
The user can perform query analysis of glaciers for four decades (1980-2010) . Multiple query conditions can be added by clicking "Add New Expression" button . The user can select the fields by selecting different options in the combo box . After giving the query condition ,Click "Search" button to get the results .
After Clicking the "Search" button ,we get the result in table and bar-graph . By clicking the text "Show details" in the table, we can get the list of glaciers that satisfied the above condition in a new dialog box. We can check the checkbox in the new dialog box to view the glaciers on the map.
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Decadal Glacier Changes in Bhutan Himalaya
The user can perform query analysis of glaciers for the selected decade only. Multiple query conditions can be added by clicking "Add New Expression" button . The user can select the fields by selecting different options in the combo box . After giving the query condition ,Click "Search" button to get the results .
After Clicking the "Run Query" button ,we get the results in table . We get the list of glaciers that satisfied the condition given and we can show the glaciers on map by checking the checkbox and clicking the button "Show In Map".
