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Coastal change Danube Delta change detectionOil spillsDeforestation Bardia National ParkCongo River BasinKameng-Sonitpur Elephant ReserveKilimanjaroRondoniaShillong and GuwahatiIce Antarctica 2003Climate change and glaciersGlacier analysis using radar imageryGlacial retreat in the AlpsGlacier Ice FlowMonitoring of glaciers in the HimalayasRemote sensing of ice and snowUrbanisation CairoCity of KathmanduCórdobaHimalayasKathmandu ValleyLagosVegetation Annapurna Conservation AreaLost in the AndesNgorongoro Conservation AreaNiger Inland DeltaVegetation in South America
| | | | | | | Location of the study area, Khumbu Himal - Part 3
Working with Landsat images
Glacial lakes are part of a cold, sensitive environment. The growth rate of a lake is an indicator of a potential hazardous situation.
This exercise will show you how to monitor the changes of the lakes on the Imja Glacier tongue including the Imja Tso, a famous lake that has a high outburst hazard potential.
First have a look at the working tool: Satellite images from Landsat TM. Try to find the most suitable colour image for the task. There are different spectral bands available.
With Image>Combine from…>Red Green Blue you can produce colour composites of the single bands.
First, we will combine the bands 3 (Red), 2 (Green) and 1 (Blue).
Save the new image as 'khumbu_321.tif'.
Do the same for the following band combinations: 432, 543, and 752 respectively.
1. While looking at the different band combinations, what changes in colours can you note? Describe them.
2. Where do they occur? Which land cover is affected?
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| | Monitoring of glaciers in the Himalayas IntroductionGlaciersInvestigation areaKhumbu's glaciersImja glacierExercises Location of the study area, Khumbu HimalDevelopment of glacial lakes in the Khumbu HimalGlacier retreat at Honku glacierLinks Further ReadingEduspace - Software LEOWorks 3Eduspace - Download glacier_worksheet1.zipglacier_worksheet2.zipglacier_worksheet3.zip
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